ОБЖИМНОЙ МОДУЛЬ ДЛЯ ПРОПИТАННЫХ ПРОВОДНИКОВЫХ СТЕРЖНЕЙ КРУПНОГАБАРИТНЫХ ЭЛЕКТРИЧЕСКИХ МАШИН И ОБЖИМНОЙ МЕХАНИЗМ, ОБОРУДОВАННЫЙ ТАКИМ ОБЖИМНЫМ МОДУЛЕМ

Изобретение относится к технологической оснастке для прессования и затвердевания пропитанных проводниковых стержней, используемых в крупногабаритных электрических машинах, например гидрогенераторах. Обжимной модуль обжимного механизма для прессования стержней содержит первое и второе обжимные устройства. Первое обжимное устройство состоит из каркаса с горизонтальным участком основания, двумя наружными ребрами и по меньшей мере с одним закрывающим узлом для прикладывания усилия обжима. Второе обжимное устройство состоит из поперечины по меньшей мере с одним закрывающим узлом для прикладывания усилия обжима. Направления воздействий усилий обжима, прикладываемых первым и вторым обжимными устройствами, перпендикулярны друг другу. По меньшей мере один закрывающий узел имеет корпус и подвижный обжимной поршень. Последний выполнен с резьбовым отверстием, в котором установлен болт, обеспечивающий осевое перемещение обжимного поршня и его выдвижение из корпуса. В результате обеспечивается снижение ...

РОТОР ЭЛЕКТРОДВИГАТЕЛЯ С НАРУЖНОЙ ОБОЛОЧКОЙ, ОБРАЗОВАННОЙ ПУТЕМ НАМОТКИ, СПОСОБ ИЗГОТОВЛЕНИЯ ТАКОГО РОТОРА И ЭЛЕКТРОДВИГАТЕЛЬ С ТАКИМ РОТОРОМ

Изобретение относится к ротору электродвигателя. Ротор (3) электродвигателя содержит магнитопровод (4), закрепленные на нем по окружности магниты (5) и провод (6), намотанный соприкасающимися витками на магнитопровод (4) и магниты (5). Провод (6) содержит металлический сердечник, окруженный электроизолирующим слоем, покрытым наружной оболочкой из термоадгезионного материала. При этом витки провода адгезионно соединены между собой в соприкасающихся областях наружной оболочки провода. Кроме того, изобретение относится к способу изготовления такого ротора и к электродвигателю с таким ротором. Техническим результатом является упрощение изготовления ротора. 3 н. и 7 з.п. ф-лы, 7 ил.

ВЫСОКОВОЛЬТНАЯ ЭЛЕКТРИЧЕСКАЯ МАШИНА ПЕРЕМЕННОГО ТОКА

Изобретение относится к электротехнике и может быть использовано в высоковольтных электрических машинах переменного тока, предназначенных для непосредственного включения в распределительную или магистральную сеть. Электрическая машина содержит по меньшей мере одну обмотку. Эта обмотка содержит по меньшей мере один токонесущий проводник, вокруг которого расположен первый слой, имеющий полупроводниковые свойства. Вокруг указанного первого слоя расположен твердый изолирующий слой, а вокруг указанного изолирующего слоя расположен второй слой, имеющий полупроводниковые свойства. Кроме того, предусмотрены средства заземления для соединения по меньшей мере одной точки указанной обмотки с "землей". Технический результат заключается в обеспечении возможности непосредственного включения электрической машины в распределительную или магистральную сеть. 2 с. и 31 з.п.ф-лы, 15 ил.

Устройство управления компенсацией и подсушкой асинхронного двигателя

Полезная модель относится к электротехнике, а именно к устройствам управления компенсацией и подсушкой асинхронного двигателя и может быть использована для защиты трехфазных асинхронных электродвигателей, работающих со значительными перерывами между включениями в помещениях с повышенной влажностью и вне помещений. Для повышения надежности работы за счет относительного повышения уровня высших гармоник, обеспечивающего достаточную степень подсушки изоляции обмоток трехфазного асинхронного электродвигателя устройство управления компенсацией и подсушкой асинхронного двигателя, содержащее трехфазный конденсатор с тремя выводами, с одной стороны, соединенный с выводами трехфазного источника питания, с другой стороны соединенный с выводом трехфазного асинхронного электродвигателя, трехфазный контактор, согласно полезной модели содержит подключенный к трехфазному источнику питания трехфазный автоматический выключатель, первую и вторую катушки с выходными и входными выводами у каждой, тиристорный ...

Способ сушки изоляции тяговых электродвигателей электровоза

Изобретение относится к железнодорожному транспорту, а более конкретно к тяговым электродвигателям электровозов. Способ сушки изоляции тяговых электродвигателей электровоза, при котором производят токовую сушку с использованием собственных технических средств электровоза, охватывает не менее одной группы тяговых двигателей, включающей тяговые двигатели одной тележки. Процесс сушки проводят под управлением микропроцессорной системы управления и диагностики с использованием схемы активного контроля сопротивления изоляции с помощью встроенных в схему измерителей сопротивления изоляции непосредственно на электровозе при его стоянке подачей напряжения от контактной сети к преобразователю собственных нужд для питания его статическим преобразователем просушиваемых тяговых двигателей каждой группы постоянным током низкого напряжения в 300 А, обмотки возбуждения и якорей которых включают в последовательные цепи. При этом процесс сушки изоляции производят четырьмя циклами в четырех стационарных положениях ...

Способ сушки изоляции тяговых электродвигателей электровоза

Изобретение относится к железнодорожному транспорту, а более конкретно к тяговым электродвигателям электровозов. Способ сушки изоляции тяговых электродвигателей электровоза, при котором производят токовую сушку с использованием собственных технических средств электровоза, охватывает не менее одной группы тяговых двигателей, включающей тяговые двигатели одной тележки. Процесс сушки проводят под управлением микропроцессорной системы управления и диагностики с использованием схемы активного контроля сопротивления изоляции с помощью встроенных в схему измерителей сопротивления изоляции непосредственно на электровозе при его стоянке подачей напряжения от контактной сети к преобразователю собственных нужд для питания его статическим преобразователем просушиваемых тяговых двигателей каждой группы постоянным током низкого напряжения в 300 А, обмотки возбуждения и якорей которых включают в последовательные цепи. Процесс сушки осуществляется в два этапа в двух стационарных положениях с переводом ...

Устройство подсушки изоляции обмоток трехфазного асинхронного электродвигателя в технологической паузе

Изобретение относится к электротехнике, а именно к устройствам для подсушки изоляции обмоток трехфазного асинхронного электродвигателя в технологической паузе, и может быть использовано для защиты трехфазных асинхронных электродвигателей, работающих в помещениях с повышенной влажностью и вне помещений. Техническим результатом является повышение надежности работы за счет исключения резонанса тока на гармонике с большой частотой, повышение стабильности работы устройства подсушки изоляции обмоток. Устройство содержит три трехфазных конденсатора с тремя выводами у каждого, с одной стороны соединенные с выводами трехфазного источника питания, с другой стороны соединенные с тремя выводами трехфазного асинхронного электродвигателя, трехфазный контактор, согласно изобретению содержит основной, подключенный к источнику питания, и дополнительный, подключенный к основному, трехфазные автоматические выключатели, при этом входные три вывода основного автоматического выключателя соединены соответственно ...

Электроизоляционный материал для катушки

Изобретение относится к электроизоляционному материалу для катушки, причем электроизоляционный материал размещен между сердечником статора и катушкой и способен изолировать катушку от сердечника статора. Расширяющийся добавочный слой со стороны сердечника статора и расширяющийся добавочный слой со стороны катушки включают в себя пеноматериалы, вспенивающиеся при нагревании. Пеноматериал, включенный в расширяющийся добавочный слой со стороны сердечника статора, имеет такую характеристику вспенивания, что характеристика возрастания скорости вспенивания от повышения температуры, смещается в сторону более низких температур относительно характеристики возрастания пеноматериала, включенного в расширяющийся добавочный слой со стороны катушки. Изобретение позволяет уменьшать разность в скорости вспенивания между добавочным слоем со стороны катушки и со стороны сердечника статора. 9 ил.

ЭЛЕКТРОДВИГАТЕЛЬ И ЭЛЕКТРОИНСТРУМЕНТ, СНАБЖЕННЫЙ ЭТИМ ДВИГАТЕЛЕМ

... 1. Электродвигатель, содержащий якорь, прикрепленный к вращающемуся валу и включающий в себя сердечник с проходящими в осевом направлении пазами; обмотку, намотанную вокруг сердечника в осевом направлении в указанных пазах, причем два концевых участка обмотки расположены в осевом направлении на обоих концах сердечника, на которых намотанная обмотка выступает из пазов в осевом направлении; охлаждающий вентилятор, прикрепленный к вращающемуся валу; и заполняющий слой формованного полимера для покрытия намотанной в пазах обмотки и для заполнения каждого паза до уровня периферической поверхности, совпадающего с уровнем внешней периферической поверхности сердечника, при этом якорь снабжен проходящими в осевом направлении открытыми желобками, выполненными на периферической поверхности слоя формованного полимера, заполняющего пазы. ! 2. Электродвигатель по п.1, отличающийся тем, что размеры поперечного сечения открытого желобка в радиальной плоскости, перпендикулярной осевому направлению, выполненного ...

СИСТЕМА ЭЛЕКТРИЧЕСКОЙ ИЗОЛЯЦИИ НА ОСНОВЕ ЭПОКСИДНЫХ СМОЛ ДЛЯ ГЕНЕРАТОРОВ И ДВИГАТЕЛЕЙ

СИСТЕМА ИЗОЛЯЦИИ ДЛЯ ЭЛЕКТРИЧЕСКИХ МАШИН

VERFAHREN ZUR HERSTELLUNG EINES BETRIEBSMAESSIG SPALTROHRLOSEN ELEKTROMOTORS MIT VERGOSSENER STAENDERWICKLUNG

ELEKTRISCHE DREHSTROMMASCHINE MIT PERMANENTMAGNET UND HERSTELLUNGSVERFAHREN DERSELBEN

Ein Rotorkern (21) in einer elektrischen Drehstrommaschine mit Permanentmagnet (1) wird gebildet durch Laminieren einer Mehrzahl von Plattenmaterialien (21A) , (21B) , (21C) und (21D) und weist einen oder eine Mehrzahl von Mittelstegen (26), die zwischen benachbarten Magnetschlitzen (23) gebildet sind, um eine äußere Umfangskante (24) und einen Kernabschnitt (25) in einem Magnetpol zusammenzukoppeln, auf. Nicht-magnetische Abschnitte (30) werden an einem Teil der oder sämtlichen des einen oder der Mehrzahl von Mittelstegen (26) gebildet. Isolierfilme (32) sind auf Flächen von anderen Teilen/Stellen als jenen Bereichen, wo die nicht-magnetischen Abschnitte (30) auf der Mehrzahl entsprechender Plattenmaterialien (21A) , (21B) , (21C) und (21D) zur Bildung des Rotorkerns (21) gebildet sind, angeordnet.

VERFAHREN ZUR HERSTELLUNG DER WICKLUNG EINER ELEKTRISCHEN MASCHINE.

Rotor und Reluktanzmotor

Die Erfindung betrifft einen Rotor für eine Synchronmaschine, insbesondere eine Reluktanzmaschine, umfassend ein zylinderförmig aufgebautes weichmagnetisches Element, wobei das weichmagnetische Element Aussparungen zur Ausbildung von magnetischen Flusssperren aufweist, die eine gerade Anzahl von ausgeprägten magnetischen Polen ausbilden, wobei wenigstens eine Aussparung zumindest teilweise mit einem diamagnetischen oder paramagnetischen Medium gefüllt ist. Des Weiteren betrifft die Erfindung ein Verfahren zur Herstellung eines derartigen Rotors sowie die Verwendung eines Rotors. Darüber hinaus ist Gegenstand der Erfindung ein Reluktanzmotor, insbesondere ein Synchron-Reluktanzmotor, der den erfindungsgemäßen Rotor verwendet.

Verfahren zum Herstellen eines Bauteils

Die Erfindung betrifft ein Verfahren zum Herstellen eines Bauteils einer elektromechanischen Maschine, wobei das Bauteil mehrere Nuten (10) aufweist, wobei in jeder Nut (10) Drähte (12) für eine Wicklung angeordnet werden, wobei die Drähte (12) mit einem Drückdorn (16) in jeweils eine Nut (10) gedrückt werden, und wobei die in die jeweilige Nut (10) gedrückten Drähte (12) mit einer Imprägniersubstanz imprägniert werden.

Winding prodn. from insulated wire turns - uses plastics filaments which is wound on outer layer and heated, so that it fuses into continuous layer

The winding top layer is covered and held by a plastic, which is wound on the top winding layer in the form of at least one thermo-plastic adhesive filament (15). The winding (14) is then heated to about 200 deg.C by a short application of heat, and the adjacent turns of the thermo-plastic adhesive filament (15) are fused into a plastic layer, so that after cooling the wire turns are firmly held together by the plastic layer. The thermal energy in the winding is developed by inductive heating methods, from an electrical current source.

Elektrische Maschine und Verfahren zur elektrischen Kontaktierung einer Wicklung einer elektrischen Maschine

Elektrische Maschine, umfassend einen Rotor (2) und einen Stator (3), wobei der Stator (3) einen Statorkörper (5) umfasst, der wenigstens eine jeweilige Wicklung (6) wenigstens einer Phase (22, 23, 24) trägt, wobei die Wicklung (6) der jeweiligen Phase (22, 23, 24) oder wenigstens eine der Wicklungen (6) der jeweiligen Phase (22, 23, 24) leitfähig mit einer jeweiligen Kontaktbrücke (7) verbunden ist, die die jeweilige Wicklung (6) mit einer zugeordneten Stromquelle und/oder -senke (8) verbindet, wobei die jeweilige Wicklung (6) und die mit dieser verbundene Kontaktbrücke (7) jeweils in einem Leiterabschnitt (9, 10) enden, der sich in Axialrichtung der elektrischen Maschine (1) von dem Statorkörper (5) weg erstreckt, wobei diese Leiterabschnitte (9, 10) leitend miteinander verbunden sind, wobei ein Befestigungsabschnitt (13) der jeweiligen Kontaktbrücke (7) ortsfest bezüglich eines den Stator (3) aufnehmenden Gehäuses (12) angeordnet ist, indem er über ein Isolationselement (27) oder direkt ...

Elektrischer Antriebsmotor, Nassläufer-Pumpe und Haushaltsgerät

Die Erfindung betrifft einen elektrischen Antriebsmotor, aufweisend einen Stator (1) mit wenigstens einer elektrisch ansteuerbaren Statorwicklung (1a), und einen im Feld der wenigstens einen ansteuerbaren Statorwicklung (1a) unter Belassen eines Ringspaltes (9) drehantreibbar gelagerten Rotor (2), aufweisend eine Motorwelle und einen Magnetträger, welcher koaxial zu der Motorwelle angeordnet ist und wenigstens einen Permanentmagneten (12) aufweist, welcher auf einem Außenumfang des Magnetträgers angeordnet ist, wobei die Motorwelle und der Magnetträger einteilig ausgebildet sind, in dem die Motorwelle und der Magnetträger gemeinsam aus einem einzelnen Ausgangsblech durch Umformen zu einem einteiligen Rotorformkörper (3) hergestellt sind. Die Erfindung betrifft außerdem eine Nassläufer-Pumpe (6) und ein Haushaltsgerät aufweisend einen solchen elektrischen Antriebsmotor.

Method for manufacturing stator of permanent magnet-excited synchronous machine, involves bringing stator into housing, and filling sealing compound in housing, where machining treatment is implemented after hardening compound

The method involves firmly connecting stator star-stack of laminations with circular yoke stack of laminations (3). Coils (9) are outwardly attached on radial stator teeth (5), and an inner wall of a stator (1) of a machining treatment is subjected until nominal dimension of diameter of the inner wall of the stator is reached. The stator is brought into a housing, and a sealing compound is filled in the housing for fixing the stator. The machining treatment is implemented after hardening the sealing compound.

Method for e.g. wetting interior surface of stator of e.g. electric motor with active liquids, involves producing pressure difference between gas pressures of gas areas, where difference is maintained in non-zero value

The method involves subjecting outside fluid levels (33) of a bath (31) surrounding an exterior surface of a component (2) with gas pressure of an external gas area (43). Internal fluid levels of the bath in an interior surface of the component are subjected with gas pressure of an internal gas area. A pressure difference is produced between the gas pressures of the external and internal gas areas for achieving different internal and outside fluid levels during an operational sequence, where pressure difference is maintained in a time-wise and phase-wise non-zero value. An independent claim is also included for a device for wetting and/or sealing an interior surface and/or an exterior surface of hollow components.

Stator und Verfahren zur Herstellung eines Stators eines elektrischen Antriebsmotors

Device for inductive heating of winding coils of electrical machines, has inductor with adjustable active area for inductively heating winding coils and rods, especially continuously adjustable by slip contacts

The inductive heating device has an inductor (1) with an adjustable active area for inductively heating the winding coils and rods. The active area of the inductor can be discretely adjusted by screw and/or plug-in bridges (8,9) or can especially be continuously adjusted by using slip contacts.

Vergussverfahren sowie Vergussvorrichtung für eine innerhalb eines Rotorkörpers vorhandene Erregerschaltung

Vergussverfahren und Vorrichtung (100) zum Verguss einer im Inneren eines Rotorkörpers angeordneten Erregerschaltung. Die Erregerschaltung weist eine Platine (102, 103) mit am Rand dieser Platine (102, 103) vorhandenen Kontakten (103, 103') auf, wobei die Kontakte (103, 103') in einem Toleranzbereich (109) um eine konzentrisch zu dem Rotorkörper orientierte Zylindermantelfläche (110) angeordnet sind. Die Erregerschaltung befindet sich innerhalb eines Vergussbereiches (101), welcher von einem torusförmigen elastischen Ring (112) derart flüssigkeitsdicht abgeschlossen wird, dass gleichzeitig Flächen der Kontakte (103, 103'), welche innerhalb des Toleranzbereiches (109) liegen, in Kontakt mit dem torusförmigen elastischen Ring (112) stehen.

IMPROVEMENTS RELATING TO IMPREGNATION APPARATUS

... 1,237,565. Impregnating electrical windings. MUIRHEAD Ltd. 12 June, 1969 [12 June, 1968], No. 27924/68. Heading D1P. Apparatus for treating electrical windings with an impregnation fluid comprises; holders 5 each having a rotatable mandrel on which the winding to be treated is fitted; a chaindrive 60 extending along the path of movement of the holders and co-operating with sprockets 7 on the holders to spin the mandrels continuously while they are moved along the path; arrangements for engaging the drive with, and disengaging the drive from, each holder at the beginning and end of the path respectively; an applicator for supplying impregnation fluid to each winding at the beginning of its path; and an oven through which the holders pass as they travel along their path, during which passage the fluid impregnating the windings is at least partially cured. The applicator (Fig. 2, not shown) is mounted adjacent to the oven inlet and is movable vertically, laterally or obliquely so that the ...

MANUFACTURE OF ELECTRICAL COILS

... 1394361 Shaping coils ALUMINIUM FOILS Ltd 11 Aug 1972 [13 Aug 1971] 38124/71 Heading B3A A process for the manufacture of a shaped electrical coil comprises bending a coil to a required shape by compression between correspondingly-shaped plates of a press, the coil having been wound from metal foil and having been treated to procure the adhesion of adjacent comolutions to each other and thus forming a blocked coil. The blocked coil is wound from foil, e.g. aluminium ribbon, and coated with a thermo-setting lacquer which is then heated to produce a chemical cross-linking reaction. The bending operation is carried out by a single stroke of an hydraulic press. The shaped coil is suitable for the field coil of an electrical generator.

MANUFACTURE OF ROTARY DYNAMO-E.ECTRIC MACHINES OR PARTS THEREOF

... 1450501 Making dynamo-electric machines SIEMENS AG 1 July 1974 [29 June 1973] 29147/74 Heading B3A [Also in Division H2] A method of making a dynamo-electric machine comprises making an assembly of a wound stator 1, a housing part 5 constituting an end shield having a circular trough which accommodates the end turns 41 of the winding 4, spacer means, e.g. perforated foil 7, between the end turns and the housing part and a cylindrical member within and coaxial with the stator, introducing a settable material 2 into the assembly which acts as a mould and removing the cylindrical member after the material has set. An outer end shield part 61 also forms part of the assembly and it is secured to the stator 1 together with the end shield 5 by rivets 8. The cylindrical member seals the inner space of the assembly and simultaneously centres the shield 5 and shield part 61. The settable material is a casting resin and is introduced into the assembly in vacuo through apertures in the shield 5 and ...

MULTI-LAMINATE CORE ASSEMBLY

METHOD OF PROVIDING AN INSULATED WINDING IN SLOTTED MAGNETIZABLE CORES OF DYNAMO ELECTRIC MACHINES

... 1349386 Making coils for dynamo-electric machines WESTINGHOUSE ELECTRIC CORP 14 June 1971 [5 Aug 1970] 27680/71 Heading B3A [Also in Division H2] Conductors 36, 38 in a dynamo-electric machine core slot 30 are insulated by standing the core on end (i.e. with the slot vertical), introducing powdered resinous material 48 into the slot whilst simultaneously vibrating the core/conductor assembly, so that the powder compacts into the interstices between the conductors and between the conductors and the slot wall, and then heating the assembly to fuse and cure the resin. Before the assembly cools completely, powdered resin is applied to the end turns, and the assembly is then reheated. The resin may be thermoplastic, or may be formed by a thermosettable blend of epoxy resins, a pigment, an amine curing agent and a silica filler. The slot liners 40, 42 are formed of mica flakes bonded together by a fusible resin, so that when the assembly is heated the liners fuse with the packing material 48.

ELECTRICAL COIL ASSEMBLY

... 1381502 Making electrical coils GIRLING Ltd 7 Jan 1972 [1 June 1971] 12480/73 Divided out of 1381501 Heading B3A A method of making a coil 18 for an electrical sensor, which includes a housing having inner and outer spaced cylindrical walls 15, 16 and a closed inner wall 17 defining an annular recess 14, comprises winding a length of adhesive coated wire around a mandrel, heating the wire and adhesive to cure the adhesive to form a unified coil structure and removing the so formed coil structure from the mandrel for subsequent insertion into the recess 14 where the coil is enclosed by the concentric walls and the inner walls. The sensor is of the type disclosed in Specification 1,381,501. The wire is coated with a heat-sensitive thermal-setting adhesive, such an as epoxy-resin, and the coil is heated by passing a current through it. The coil is inserted in a groove 14 of a housing 7 and the free ends of the wire are soldered to tags 19. Alternatively, the tag may be secured during the curing ...

METHOD FOR FORMING LAMINATE CORE ASSEMBLY

Electric motor

Electric machine slot wedge

Field assemblies and methods of making same

Field assemblies and methods of making same

Coil winding component and rotary electric machine

A sealed casing for a regulator circuit in a motor vehicle

The regulator casing comprises at least one circuit board from which a plurality of insulated electrical wires (3, 3'; 4, 4') extend,
```a dish-shaped metal container (10) in which the circuit board is fitted and which has at least one slot or opening (21) through which the electrical wires can extend, and a seat adjacent the slot or opening (21),
```a grommet (25) of electrically insulating material, through which the wires extend and which can be fitted in the seat in the container (10), the grommet (25) having an internal duct which, after the grommet has been positioned in the seat, permits the injection of a setting sealant material for sealing the spaces between the wires (3, 3', 4, 4') and the grommet (25) in a leaktight manner, and
```a cover (40) fined on the container (10) over the circuit board. The spaces between the cover (40), the container (10), and the grommet (25) are sealed in a leaktight manner by means of a setting sealant. The circuit board is an electronic ...

Method of insulating an armature bar

... 944,351. Moulding armature insulation. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 26, 1962 [Aug. 10, 1961], No. 28916/61. Heading B5A. [Also in Division H2] An armature bar or winding 1, 2 insulated with polyesters or epoxide resins is consolidated by keeping the bar or winding compressed between clamping members 3, 5 while the resin is cured by heating in an oven or by passing a current through the conductors or both. The members may be of metal or rubber and wrapped with a shrinkable tape 6.

Improvements in or relating to fuel suppy units.

A method for the production of a fuel-resistant fuel supply unit, preferably an electrically driven fuel pump, and also a fuel supply unit are proposed, wherein resin break-aways may be avoided at the armature winding. For producing such a fuel- resistant and strengthened armature winding (4), a lacquered wire with a baked lacquer coating is used as the winding wire, which coating is so softened by temperature effect that, after the winding has cooled, a firm bond is provided at the mutual contact points of the wires. For the baked lacquer coating, synthetic resins on a polyamide basis (thermoplastics), or on a polyester or epoxy basis (duroplastics) are preferred. As a result, the impregnation of the armature winding (4) may remain stable even under the action of fuel and no longer tends to break away. ...

Pole-piece Bonding

A radial wall 100 for a stator housing to be located in said gap between a rotor and the stator of a permanent magnet yokeless and segmented armature (YASA) machine having clamshells with stator coils and bars located there between is manufactured by providing a polymer material membrane 110, pressing at least said end or shoes of a set of stator bars 180 into said membrane whilst said polymer is mouldable wherein at least said end or shoe of the stator bars is formed of porous material, solidifying said polymer to hold said set of stator bars in their respective positions; and manufacturing said housing using said radial wall. The resin membrane which may contain woven glass fibre reinforcement 160, may be an engineering polymer (e.g. PPA, PEEK, PPS, ABS, PA) wherein said reinforcement inhibits said stator bars from pushing through said membrane. A thermoplastic polymer member 175 forming a supplementary resin supply and providing flashing 176. Fibre reinforced laminates 112 (eg fig7a) ...

Field assemblies and methods of making same

A method and arrangement for assembling an electric motor or generator

A method of assembling an electric motor or generator having an annular first element 100 mounted on a circumferential mounting surface of a second element 110 comprises placing a heating coil (Fig 5, 500) within an inner annular surface of the annular first element and applying a current to the heating coil, which maybe an induction coil, to heat the inner annular surface of the annular first element to a temperature that results in the inner annular surface of the annular first element increasing in diameter to allow the annular first element to be mounted on or over the circumferential mounting surface of the second element. The annular first element is then cooled to form an interference fit with the circumferential mounting surface of the second element. The annular element may in various embodiments be a back iron, rotor or stator with the second element a stator support, back iron or rotor respectively.

Method of shaping conductor bars

... 1,031,084. Moulding conductor bar assemblies. GENERAL ELECTRIC CO. April 1, 1964 [April 1, 1963], No. 13414/64. Heading B5A. [Also in Division H2] A stator bar comprising conductor bars 13 having strand insulation 15 is formed by subjecting an array of bars 13, placed between uncured epoxy resin impregnated mica mats 17, 18, to the action of a mould press, whereby the mats flow about and between the bars, the resin being subsequently cured. The stator bar is shaped by mould sections 5, 6, the latter being in two parts 7, 8 initially held apart by a spring 9 and brought together by a ram 12 to compact the array. The mats flow under the effects of heat and pressure when section 5 is lowered and steam is passed through conduits 4. Overflow grooves 10 are provided and conduits 4 may carry a cooling fluid after curing and prior to removal of the bar. The mats 17, 18 are formed by dehydrating mica, forming a pulp therewith in a liquid medium and laying the pulp down in the form of a paper. Thereafter ...

Magnetic rotor unit, and apparatus and method of manufacturing a magnetic rotor unit

A method of manufacturing a magnetic rotor unit 10 comprising: providing a composite magnetic rotor body 11 comprising magnetic particles dispersed in a polymer resin and having a hole formed therein; inserting a shaft 12 into the hole, the outer diameter of the shaft corresponding to the inner diameter of the hole; and heating the shaft. First and second holding parts are used to perform the method. The heating may be performed in a cool environment so as to induce a temperature gradient across the rotor body radially outward of the shaft. The shaft may be heated using and alternating current flow 24 through the shaft using electromagnetic induction. The hole may be a through hole with a shaft to hole clearance of less than 200 micrometres, less than 100 micrometres or less than 50 micrometres. The shaft may be made of an electrically conductive or semi-conductive metallic material. The magnetic particles may comprise at least one of, or a combination of, ferrite, a rare earth iron boride ...

Encapsulation of electrical power component

... 976,909. Encapsulating electrical power components. EPOXYLITE CORPORATION. June 1, 1961 [June 3, 1960; Jan. 31, 1961], No. 19776/61. Heading B5A. [Also in Division H2] Windings which extend as annular protrusions from a magnetic core, such as stator or rotor windings in a dynamo-electric machine, are encapsulated in an insulating medium by arranging annular U-section channel members over the protruding portions of the windings to serve as moulds during the encapsulating process, the annular members being formed by bending suitable lengths of U-section channel of non-magnetic metallic foil sideways into circular form, at least one side wall of the channel having corrugations to provide strength combined with flexibility. Fig. 3 shows a section through an arcuate length of corrugated channel 1 seen from above in Fig. 1. Such channel 1 bent to annular form is arranged over the end windings for the stator of an electric motor. The outer edges 5 of the channels are bent outwardly and secured ...

Methods and systems for sealing liquid cooled stator bar end connections for a generator

COATING AN INDUCTIVE STABILIZATION BALLAST

Improvements relating to the winding of dynamo-electric machines

... 593,984. Insulation of dynamoelectric machines. SIGMUND PUMPS (GREAT BRITAIN), Ltd., and SIGMUND, M. June 21, 1945, No. 15878. Drawings to Specification. [Class 35] [Also in Group XXXVI] A multi-turn coil is formed by passing a group of. mutually insulated wires through a bath of insulating material and thereafter through a die of profile similar to or slightly larger than the section of the group of wires so that the individual wires are bonded in the group, these wires being connected in series after the group assembly has been threaded repeatedly through the same slots. The initial coating on the individual wires may be applied by passing them through a bath of the same or a different material. Examples of insulation are enamel, vinyl acetate or a plastic material applied under pressure. Specification 470,256 is referred to.

METHOD AND APPARATUS FOR PRODUCING A PROTECTIVE COATING ON THE SURFACE OF A MANUFACTURED ARTICLE

... 1299953 Valves GENERAL ELECTRIC CO 18 Feb 1970 [27 Feb 1969] 7878/70 Heading F2V [Also in Division B2] A valve assembly 80 comprises a rotatable plate 260 secured to a dial plate 170 which plate can rotate relative to a fixed plate 262 to which are coupled conduits 263, 264, 267. Formed in the fixed plate assembly 262 is a relatively short arcuate groove 269 which can communicate with pipe 78a. A long arcuate groove 270 connects a high pressure fluid source 266 to pipes 78, 78a, 78b, 78c. Also formed in the freed plate 262 are two spaced circular grooves 271, 272 each of which is in communication with one of the heat exchanger conduits 267. The plate 260 is formed with four holes communicating with groove 271 and four holes communicating with groove 27 which can be connected together to provide cooling circuits through the heat exchanger 268.

DYNAMOELECTRIC MACHINES

Improvements in or relating to methods and apparatus for the impregnation of electric windings

... 1,001,008. Electric insulation. J. BAER, [trading as J. BAER MASCHINENFABRIK] Jan. 15, 1963 [Jan 15, 1962], No. 1853/63. Heading D1P. Electric windings 2 are passed intermittently in pairs by means of conveyer belts 8 under a radiant heater 22 to a position below orifices 36 where the windings are inclined upwards and caused to rotate while metered quantities of resin and hardener are fed, as a mixture, on to the windings. The windings are then passed in the horizontal position without rotation over radiant heaters 38 to effect curing of the resin. The windings are inclined upwards by means of a guide rail (Fig. 3, not shown) and caused to rotate by engagement with a powered cog wheel attached to the frame of the apparatus (Fig. 2, not shown).

A process for the impregnation with curable synthetic resin and dimensionally accurate curing of the insulation surrounding stator winding elements of an electric machine

... 1,098,015. Electric insulation. SIEMENSSCHUCKERTWERKE A.G. April 1, 1966 [April 2, 1965], No. 14708/66. Heading D1P. Insulating sleeves 3 of mica tape wound on electric winding bars 2 are impregnated under vacuum with resin, which is then cured, while the sleeve-bear elements are situated in slots 1 in a laminated stator assembly. The stator assembly is inserted in the resin and curing is restricted to impregnated resin by passage of current through the bars or the presence of catalyst in the sleeves. The slots may contain anti-adhesion foil or have a lacquer coating to enable removal of the treated sleeve-bar elements from the assembly. Known resins and catalysts are specified.

Magnetic rotor unit, and apparatus and method of manufacturing a magnetic rotor unit

DOSING APPARATUS FOR DISPENSING MEASURED QUANTITIES OF VISCOUS LIQUIDS

... 1516115 Metering viscous liquid SIEMENS AG 5 Aug 1975 [22 Aug 1974] 32765/75 Heading B8N An apparatus for metering viscous liquid such as casting resin to impregnate a winding of an electrical machine comprises a supply line 1 with controlled inlet 2 and outlet 3 and a quantity control for the liquid to open and close the inlet and outlet in turn. The supply line has a branch 6 connected to a control column 8 filled with dyed water whose position is detected by devices 9, 10 which may be capacitive or photoelectric. The upper device 9 closes the inlet blocking element 2 on to the line 1 which is flexible, e.g. PVC, and the outlet blocking element 3 is opened either by a timing element actuated by a wound rotor conveying belt or by the upper device 9. The dyed liquid falls as the viscous liquid is discharged until it reaches detector 10 which closes the outlet and opens the inlet.

Method of producing a wound stator for a dynamo-electric machine

... 835,376. Insulation for dynamo-electric machines. BROWN, BOVERI & CIE. A.G. June 4, 1958 [June 6, 1957], No. 17803/58. Class 35. In a method of producing a wound stator for a dynamo-electric machine having partly closed stator slots 2 where the individual winding wires are laid separately into the slots and are held in position by slot closures, not shown, each wire layer 1 after being inserted into a slot is covered by a hardenable solvent-free coating resin 7 squirted into the slot, and the entire wound stator is heat-treated after all the layers and resin have been inserted and the slots closed. The heat treatment is oven-drying, and the resin 7 is applied in the plastic state by a squirting device 6 having a plunger 5 and tube 8. The invention is applicable particularly to low-power highvoltage machines and is to prevent the enclosure of air bubbles.

METHOD OF PRODUCING WINDINGS FOR ELECTRICAL MACHINES AND APPLIANCES

... 1524414 Resin coated slot liners SCHWEIZERISCHE ISOLA WERKE 18 June 1976 [19 June 1975] 25508/76 Heading B2E [Also in Divisions C3 and H2] A slot liner is coated with an incompletely cured resin, so that on curing it may cause the liner to adhere in the slot of a core of an electrical machine. For class B insulation (130‹C) the base of the slot liner may be polyester sheets or laminates of polyester sheets and laminated fibre sheets. The coating material may be a phenolic resin or an epoxy resin with BF 3 which may include ketone soluble rubbers, e.g. butadiene/acrylonitrile copolymers. For Class F insulation (155‹C) or Class H insulation (180‹C) the base is of polyamide fibres or asbestos. The coating may be a mixture of a polyurethane ester imide and an epoxy resin., An example of the imide is the condensation product of phenol, cresol or at least one xylenol, the N-carbpxymethylimide of trimellitic acid, triethylene glycol and tris-(2-hydroxyethyl)-isocyanurate. The epoxy resin may be ...

Method of impregnating insulated coils in the winding of an electric machine

Air spaces inside the insulation of the coils and between the conductors of an electric machine are filled by pumping an impregnating agent into the coil end insulation or into the channel insulation, and the impregnating agent is cured after the filling. The pumping is carried out through a hole made or left in the insulation by means of a tubular nozzle.

APPARATUS FOR IMPREGNATION BODIES WITH A CASTING RESIN COMPOSITION

... 1318420 Centrifugal moulding CIBAGEIGY AG 18 Aug 1970 [21 Aug 1969] 39772/70 Heading B5A Apparatus for impregnating a body, e.g. an electrical winding, with a resin composition comprises mould halves 10a, 10b, 9a, 9b equiangularly spaced around the axis of discs 5a, 5b between which they are clamped, the clamped assembly being secured to a driven shaft which rotates the assembly about said disc axis which may be vertical or horizontal. A body to be impregnated is located in each mould and gas burners heat the assembly as it rotates; when the mould cavities have been heated to a temperature sufficient to initiate hardening of the resin composition, the latter is fed through a bore 11 to a chamber 8 and centrifugal forces direct it radially through channels into the moulds. The resin hardens whilst being subjected to pressure e.g. the centrifugal pressure or the pressure of a medium applied through bore 11. The mould halves may be dispensed with and the bodies received in the cavities formed ...

Rotor

A rotor (10) for a rotary electric machine is described, the rotor (10) comprising a support disc (14) having opposing first and second faces, a support member (20), and a plurality of permanent magnets (22) mounted to and retained by the support member, wherein the support member is secured to the first face of the support disc (14).

A brushless motor

A brushless motor comprising a stator assembly 16, and a frame (14, fig 1) within which the stator assembly is housed, the assembly comprising stator core sub-assemblies 16 each comprising a stator core, a bobbin 22 attached to the stator core, and a winding wound 24 about the bobbin, each bobbin comprising a connection portion 50, 52, for connecting to an adjacent bobbin in the stator assembly, and the frame being overmoulded to the stator assembly. Each bobbin may be overmoulded to a respective core. The bobbins may comprise a first material, and the frame a second material being different to the first material. Each bobbin may be overmoulded to a respective stator core in a first overmoulding process, and the frame is overmoulded to the assembly in a different second overmoulding process. The assembly may comprise first and second terminals (58, 60, fig 4) to which the windings are attached, and a sleeve (62, fig 4) overmoulded to the terminals, where the terminals are exposed through ...

Transformer/reactor

Rotating electric machines with magnetic circuit for high voltage and method for manufacturing the same

A dc transformer reactor

A DC transformer/reactor.

The present invention relates to a DC transformer/reactor comprising a magnetic circuit, wherein the magnetic circuit comprises magnetic core and at least one winding. The winding comprises at least one current-carrying conductor. Each winding comprises also i insulation system, which comprises on the one hand at least two semiconducting layers, wherein each layer constitutes substantially ; equipotential surface, and on the other hand between them is arranged a solid insulation.

Electromagnetic device.

An electromagnetic device comprises a magnetic field generating electrical circuit including a winding (1) having at least one electrical conductor (2). The winding comprises a solid insulation (4) surrounded by outer and inner layers (3, 5) serving for equalization of potential and having semi conducting properties. Said at least one electrical conductor (2) is arranged interiorly of the inner semiconducting layer (3). The invention also relates to methods for electric field control and production of a magnetic circuit as well as use of a cable for obtaining a winding.

Rotating electric machines with magnetic circuit for high voltage and method for manufacturing the same.

A rotating electric machine for direct connection to all types of high-voltage networks, in which the magnetic circuit adapted for high voltage comprises a rotor, stator and windings. The winding comprising a conductor surrounded by a solid insulation system. The invention also relates to a method for manufacturing the same.

Transformer/reactor.

The present invention relates to a power transformer/reactor (14, 15, 16) for high voltages, comprising at least one winding having at least one current-carrying conductor. The winding comprises a solid insulation (7) surrounded by outer and inner layers (8, 6) serving for equalization of potential and having semiconducting properties. The layers (6. 8) and the insulation (7) adhere along essentially the whole of its contact surfaces. Said conductor is arranged interiorly of the inner semiconducting layer (6). The outer layer (8) is connected to ground or otherwise relatively low potential. Said solid insulation in the windings constitutes substantially the total electrical insulation in the power transformer/reactor.

Electromagnetic device

Rotating electric machines with magnetic circuit for high voltage and method for manufacturing the same

A dc transformer reactor

Transformer/reactor

Transformer/reactor

A dc transformer/reactor

Electromagnetic device

PROCEDURE AND DEVICE FOR THE ISOLATION OF ELECTROTECHNICAL CONSTRUCTION UNITS

VERFAHREN ZUR HERSTELLUNG EINES LAMINATES

VERFAHREN ZUR HERSTELLUNG EINES LAMINATES

MECHANISM FOR IMPREGNATING ISOLATION OF A COIL STAFF OF AN ELECTRICAL MACHINE

PROCEDURE FOR THE PRODUCTION OF STATOR PACKAGES FOR LONG STATOR LINEAR MOTORS OF MAGNETIC LEVITATION TRANSPORT SYSTEMS

Blechpaket und Verfahren zum Verbinden von Blechteilen zu einem Blechpaket

Es wird ein Blechpaket (3) und ein Verfahren zum Verbinden von Blechteilen (2) zu einem Blechpaket (3) gezeigt, bei dem Blechteile (2) von einem Blechband (5) mit einer wenigstens bereichsweisen, insbesondere auf beiden Bandseiten (6, 7) des Blechbands (5) vorgesehenen aushärtbaren polymeren Klebstoffschicht (8, 9), insbesondere Backlack, abgetrennt, insbesondere ausgestanzt werden, die Blechteile (2) mit einander zugewandten klebstoffbeschichteten Seiten übereinander vorgesehen und zu einem Blechpaket (3) unter Druck stoffschlüssig verbunden werden. Um vorteilhafte Verfahrensverhältnisse zu schaffen, wird vorgeschlagen, dass auf mindestens einer der einander beim stoffschlüssigen Verbinden der Blechteile (2) zugewandten Klebstoffschichten (8, 9) eine Mischung (14), aufweisend Wasser und einen thermoplastischen, insbesondere wasserlöslichen, Haftvermittler (15), vorgesehen wird.

Blechpaket und Verfahren zum Verbinden von Blechteilen zu einem Blechpaket

Es wird ein Blechpaket (3) und ein Verfahren zum Verbinden von Blechteilen (2) zu einem Blechpaket (3) gezeigt, bei dem Blechteile (2) von einem Blechband (5) mit einer wenigstens bereichsweisen, insbesondere auf beiden Bandseiten (6, 7) des Blechbands (5) vorgesehenen aushärtbaren polymeren Klebstoffschicht (8, 9), insbesondere Backlack, abgetrennt, insbesondere ausgestanzt werden, die Blechteile (2) mit einander zugewandten klebstoffbeschichteten Seiten übereinander vorgesehen und zu einem Blechpaket (3) unter Druck stoffschlüssig verbunden werden. Um vorteilhafte Verfahrensverhältnisse zu schaffen, wird vorgeschlagen, dass auf mindestens einer der einander beim stoffschlüssigen Verbinden der Blechteile (2) zugewandten Klebstoffschichten (8, 9) eine Mischung (14), aufweisend Wasser und einen thermoplastischen, insbesondere wasserlöslichen, Haftvermittler (15), vorgesehen wird.

Bobbin for an electric coil arrangement and a method for making an electrical coil assembly

Bei einem Spulenträger (1) für eine elektrische Spulenanordnung (2), wobei der Spulenträger (1) einen Wickelaufnahmebereich (3) für wenigstens einen Umfangsabschnitt einer Spulenwicklung (4) aufweist, welcher Wicklungsaufnahmebereich (3) von einer Wicklungsaufnahmebereichsinnenfläche (5) zum Kontakt mit einer innersten Wickellage (6) der Spulenwicklung (4) und wenigstens einem, von der Wicklungsaufnahmebereichsinnenfläche (5) abstehenden ersten Endstück (7) begrenzt ist, wird vorgeschlagen, dass an einer, dem Wicklungsaufnahmebereich (3) abgewandten Seite des ersten Endstücks (7), ein wenigstens bereichsweise umschlossenes Fluidaufnahmereservoir (9) angeordnet ist, dass das Fluidaufnahmereservoir (9) mit einer Fluiddurchtrittsöffnung (10) mit dem Wicklungsaufnahmebereich (3) verbunden ist, und dass die Fluiddurchtrittsöffnung (10) angrenzend an die Wicklungsaufnahmebereichsinnenfläche (5) angeordnet ist.

PROCEDURE FOR THE ADJUSTMENT OF END WINDINGS OF ELECTRICAL MACHINES AND MEANS FOR THE EXECUTION OF THE PROCEDURE

PROCEDURE AND DEVICE FOR TRÄUFELHARZIMPRÄGNIERUNG.

PROCEDURE AS WELL AS INJECTION MOLD FOR THE PRODUCTION OF A ROTOR FOR ELECTRIC MOTORS.

STATOR FOR ENGINES AND GENERATORS OF HIGH ONES ACHIEVEMENT DENSITY AND PROCEDURE FOR ITS PRODUCTION

VERFAHREN ZUM HERSTELLEN EINES MIT POTENTIALSTEUERUNGEN VERSEHENEN WICKLUNGSSTABES VON HOCHSPANNUNGSWICKLUNGEN FÜR EINE ROTIERENDE ELEKTRISCHE MASCHINE

The aim of the inention is to provide a method which makes it possible to mount an external potential-control device in place on an individual bar before the bar is impregnated with high-electric resin. The method is used in the manufacture of bars, fitted with a potential-control device, for bar-wound high voltage windings for a rotating electric machine, the method calling for the bar (5) to be covered with insulation (1) and provided with a conducting layer. The part of the bar (5) which fits into the bar-mounting groove is wrapped with a strip (3) having a known, low resistance, and the coil-end projection is wrapped with a strip having a resistance which is dependent on the voltage. This bar (5) is inserted in a calibrated mould for impregnation and subsequent curing, the part of the bar (5) which fits into the mounting groove being covered by protective foil (4). The invention makes it possible for the first time to impregnate the potential-control device with the insulation, thus ...

HYDRAULICELECTRICAL GENERATORANLAGE

PROCEDURE FOR THE PRODUCTION OF A HIGH-QUALITY ISOLATION OF ELECTRICAL DIRECTORS/CONDUCTORS OR LEADER CONDUCTORS OF ROTATING ELECTRICAL MACHINES OF MEANS SPRAYING SINTERS

PROCEDURE FOR MANUFACTURING A LEADER STAFF

COIL FOR THE STATOR OF A ROTARY ELECTRICAL MACHINE AS WELL AS A SUCH MACHINE

Insulating tape for the production with a hot-hardening Epoxydtränkharzgemisch impregnated of an electrical insulation sleeving for electrical conductor, in particular for the coil windings and/or coils of electrical machines

Air heating mechanism for insulant Aufplättmaschinen for the reaching of an even temperature distribution along the Aufplättgutes

INSULATING TAPE FOR A COIL OF AN ELECTRICAL MACHINE

PROCEDURE FOR THE PRODUCTION OF ELECTRICALISOLATED, UNREGELMASSIG FIGURATION COILS FOR ROTARY ELECTRICAL MACHINES

PROCEDURE FOR THE SOLIDIFICATION OF COIL WINDINGS OF ELECTRICAL MACHINES

Procedure for the fusion impregnation of windings of electrical conductors

Method and apparatus for the electroless plating of a metal surface of a hollow conductor, hollow conductor, stator bar of an electric machine and stator winding arrangement of an electric machine

Flexible molding process and system for magnetic pole protective layer

A flexible molding process and system for a magnetic pole protective layer (242'). The molding process is as follows: assembling magnet steel (22) at a corresponding position on a side wall surface of a yoke (21), and sequentially laying a reinforcement material (242) and a vacuum bag (25) on a side wall surface of the magnet steel (22) and the yoke (21), the vacuum bag (25) and the side wall surface of the magnet steel (22) and the yoke (21) forming a closed system; conducting a impregnation process: evacuating the closed system so as to inject an impregnation liquid to the closed system for infiltration and impregnation; during the impregnation process, simultaneously heating and/or emitting an ultrasonic wave to the closed system; and after the impregnation process, performing a curing process to cure the impregnation liquid, so as to form the protective layer (242'). Heating can reduce the contact angle and a mechanical wave is transmitted to the impregnation liquid by means of ultrasonic ...

Method for Forming Electrodynamic Machine Insulated Coils

A method for manufacturing electrodynamic machine conductive coils, such as alternating current induction motor stator coils. A continuous strand of insulation coated wire is formed into a generally planar elongated closed loop having a circumference and an outer surface. Thereafter a permanent insulation layer is applied to the closed loop outer surface, preferably by spiral wrapping insulating tape about the circumference of the closed loop with a tape wrapping machine. The insulating tape has a catalytic chemical compound including at least one part of a multi-part epoxy resin. The closed loop is shaped into a rigid conductive coil by application pressure, in order to conform the coil to a desired profile. Application of the permanent insulation layer to the closed loop prior to its final shaping enables machine insulation taping over a larger portion of the coil circumference and reduces need for slower and more expensive hand taping.

Dual-rotor motor having heat dissipation

An electric motor may include an outer rotor and an inner rotor, with a stator, which carries the excitation coils, formed as a hollow cylinder and engaging in the pot-shaped outer rotor and being connected to the housing or to a part of the electric motor fixedly connected to the housing, and where the electric motor may further include a water cooling and an air cooling system.

Stator Manufacturing Method for a Motor and a Stator Manufactured Using the Same

A stator manufacturing method for a motor includes an assembling step coupling a magnetic driving assembly onto an outer circumferential wall of a shaft tube, a mold combining step disposing the shaft tube and the magnetic driving assembly in an intra-cavity of a fixture unit, a glue injecting and forming step injecting a filling glue into the intra-cavity, wherein the filling glue solidifies into a protective glue coating with which the shaft tube and magnetic driving assembly are coated, a mold removing step removing the fixture unit from the shaft tube, magnetic driving assembly and protective glue coating, and a shaft tube seat coupling step providing a shaft tube seat having an engaging portion and coupling the engaging portion with the shaft tube, allowing the shaft tube, the magnetic driving assembly, the protective glue coating and the shaft tube seat to be coupled together to form a stator for the motor.

Rotary electric machine

A rotary electric machine according to an embodiment includes a substantially cylindrical rotator that is freely rotatably supported, a stator, and a bracket that supports the rotator and the stator. The stator includes stator coils in which a plurality of air-cored coils are arranged in a ring shape and are integrated by resin, each of the air-cored coils being formed by winding a round copper wire and having an outer shape subjected to pressure molding, and stator cores divided for each of teeth.

Coil winding system and method for fabricating molded coil

There is provided a system for readily and efficiently fabricating a wound coil composed of a bobbinless coil. The system includes a coil winding device having an upper jig to which an upper plate is attached and a lower jig to which a lower plate is attached which are provided so as to be relatively displaceable and a tension device for applying predetermined tension to a wire rod fed from a wire rod supplying source. The coil winding device is provided with a claw section having first through third split claws that function as a winding section around which the wire rod is wound between the upper and lower plates and that slide in a radial direction when the upper jig is assembled coaxially with the lower jig.

Coreless electric machine apparatus, moving body, robot and manufacturing method of the coreless electric machine apparatus

A coreless electric machine includes: a permanent magnet on a first member; N-phase (N≧2) air-core electromagnetic coils on a second member; and a coil back yoke on the second member, each electromagnetic coil including a conductor bundle in which a conductor is wound M times (M≧2), coil sub-aggregates are provided, each including the N electromagnetic coils of the respective N phases and in each of which a conductor bundle forming an effective coil area of a first-phase electromagnetic coil contacts a second conductor bundle forming an effective coil area of another phase electromagnetic coil, and the second conductor bundle is in an air-core portion of the first phase electromagnetic coil, and the coil sub-aggregates are arranged along the cylindrical area, in which the coil sub-aggregates do not overlap in a radiation direction of the cylindrical area, and adjacent coil sub-aggregates contact each other.

Method of manufacturing laminated core

A method including: a first step of preheating a rotor core body 12 ; a second step of attaching a cull plate 21 onto a surface of the body 12 removed from a preheating device 20 ; a third step of placing the body 12 in a resin-sealing mold 19 ; a fourth step of heating and liquefying resin 15 in resin reservoir pots 29 by the mold 19 ; a fifth step of extruding the liquefied resin 15 into plural magnet insertion holes 13 and curing the resin 15 ; and a sixth step of ejecting a laminated rotor core 10 from the mold 19 and detaching the plate 21 , wherein the second step of attaching the plate 21 and the sixth step of detaching the plate 21 are performed at a same station 22 , and the plate 21 detached at the sixth step is used as the plate 21 at the second step.

Magnetic plate having woven cloth, linear motor having the magnetic plate, and method of manufacturing the magnetic plate

A magnetic plate for a linear motor, a linear motor having the magnetic plate, and a method of manufacturing the magnetic plate, wherein the strength of a portion where the thickness of a resin layer is small is improved, while maintaining desired thrust force of the motor. A woven cloth such as a glass woven cloth or a carbon fiber woven cloth is attached on a surface of a plurality of permanent magnets, wherein N-poles and S-poles of the permanent magnets are alternately positioned. Then, a resin protecting layer is formed on the woven cloth by resin molding.

Method of forming a power tool

A method for forming an armature for an electric motor includes: securing a lamination stack having slots therein on an armature shaft, securing a commutator on one end of the armature shaft, winding magnet wires in the slots in the lamination stack and securing ends of the magnet wires to the commutator, the magnet wires having armature lead wires that extend from the slots to the commutator; and molding plastic over the magnet wires to encase at least the armature lead wires in plastic. Alternatively and/or additionally, plastic is molded over the magnet wires to retain them in the slots and to support the armature lead wires and prevent them from vibrating when the armature rotates during operation.

Stator manufacturing method and stator

In a stator manufacturing method to manufacture a stator in which divided-core assemblies are arranged in a cylindrical shape, each of which includes a divided-core member having a teeth portion on which a coil is wound. In this method, the divided-core assemblies are inserted in the cylindrical shape into a fixed mold, resin sheets containing glass fibers or carbon fibers are disposed on coil-end portions of the cylindrically-arranged divided-core assemblies, and a slide part of a movable mold applies pressure to and molds the resin sheets, thereby combining the divided core assemblies into a single unit. The movable mold is operated to position the divided-core assemblies in place by a cylindrical part and then apply pressure to and mold the resin sheets by the slide part.

Electric machine - over-moulding construction

An electric machine ( 10 ) comprises a rotor ( 14 a, b ) having permanent magnets ( 24 a, b ) and a stator ( 12 ) having coils ( 22 ) wound on stator bars ( 16 ) for interaction with the magnets across an air gap ( 26 a, b ) defined between them. The bars ( 16 ) and coils ( 22 ) are enclosed by an annular stator housing ( 42 a, b ) that extends between the air gap. A chamber ( 52, 54, 56 ) is defined that incorporates cooling medium to cool the coils. The stator housing comprises two mating clamshells ( 42 a, b ) that mount the stator bars and coils in the machine. Each clamshell is moulded from reinforced plastics and interconnected (optionally through one or more intermediate components). At least one clamshell has over-moulded therein stator bar shoes that form part of said radial wall, and optionally one or more of the following components: cylindrical boss supports extending along the cylindrical outer wall part; connection studs that communicate electrically the chamber externally; stator coils; coolant inlet and outlet ports; and an outer race of a rotor bearing.

Manufacturing method of shield type motor

A manufacturing method of shield type motor includes the following steps: a): providing an iron core; b): providing a plastic shell and having the exterior face of the plastic shell press against the interior face of the iron core; c): providing a plurality of connected enamel-covered coils for being wound around the bobbin; d): providing a wire fastener for bundling the first material of plastics and the second material of plastics; e): providing a protecting jacket to be connected to the plastic shell and for containing the plurality of enamel-covered coils; f): providing a mold to let the iron core place in the mold and having the first material of plastics teem into the mold; g): having the second material of plastics teem into the mold; and h): removing the mold to expose a main body.

Direct drive rotor with metal coupler

A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler.

Electric motor having rotor structure for avoiding defect due to strain generated by temperature change, and production method thereof

An electric motor having a rotor structure and a production method thereof, wherein a strain due to temperature change does not occur and a manufacturing problem does not occur. Each permanent magnet does not contact each other, and a deformable intervening member is positioned between the end surfaces of the magnets. Intervening member is an elastically or plastically deformable member, and the thickness of the intervening member in the direction of the rotation axis of the rotor is determined so that the neighboring permanent magnets, which are bonded to a rotor core within a manufacturing temperature range of the rotor, do not contact each other at a lower limit of an operating temperature of the electric motor.

METHOD OF FORMING A POWER TOOL

A method of manufacturing an armature for an electric motor, includes: placing a commutator and a lamination stack on an armature shaft, winding magnet wire in slots in the lamination stacks to form coils, attaching ends of the magnet wire to the commutator, and molding plastic around the magnet wire and around the shaft of the armature at ends of the lamination stack. A spinning inertia of the armature is adjusted by adjusting at least one of a mass of the plastic molded and a distribution of the plastic molded. Alternatively and/or additionally, at least one of a resonant frequency and critical speed of the armature is adjusted by adjusting at least one of a geometry of the plastic molded, the physical properties of the plastic and the mechanical properties of the plastic. 1. A method of manufacturing an armature for an electric motor , comprising:placing a commutator and a lamination stack on an armature shaft;winding magnet wire in slots in the lamination stacks to form coils;attaching ends of the magnet wire to the commutator;molding plastic around the magnet wire and around the shaft of the armature at ends of the lamination stack; andadjusting a spinning inertia of the armature by adjusting at least one of a mass of the plastic molded and a distribution of the plastic molded.2. The method of claim 1 , wherein the mass of plastic molded is adjusted by varying at least one of the density of the plastic molded and the amount of plastic molded.3. The method of claim 1 , wherein adjusting the distribution of the plastic molded includes adjusting the mass of plastic placed at varying distances from an axis of rotation of the armature shaft.4. The method of claim 1 , wherein the plastic is thermally conductive plastic.5. A method of manufacturing an armature for an electric motor claim 1 , comprising:placing a commutator and a lamination stack on an armature shaft;winding magnet wire in slots in the lamination stacks to form coils;attaching ends of the magnet wire ...

Mold motor and air conditioner

A mold motor includes a mold stator, a rotor, and a bracket. The mold stator includes a first bearing housing section formed of thermosetting resin, one bearing of the rotor fitting in one end in an axial direction of the first bearing housing section, an opening section formed at an end on the opposite side of the bearing housing section, and a bracket press-fitting section formed near the opening section and having a diameter larger than a stator inner diameter. The bracket includes a bracket resin section configuring a second bearing housing section in which the other bearing of the rotor fits and a bracket sheet metal section press-fit into the bracket press-fitting section of the mold stator. In the bracket, the bracket resin section and the bracket sheet metal section are integrally molded.

METHOD OF FORMING A POWER TOOL

An electric motor has a stator in which an armature is disposed. The armature has a shaft. One of the stator or the armature includes a lamination stack having slots in which magnet wires are wound, the magnet wires having a coating of heat activated adhesive. There is further provided plastic molded around the magnet wires with heat of the plastic activating the heat activated adhesive on the magnet wires during molding of the plastic to bond the magnet wires together. 1. An electric motor , comprising:a stator;an armature received in the stator, the armature having a shaft and a lamination stack on the shaft, the lamination stack having a plurality of slots;magnet wires wound in coils in slots of the lamination stack, the magnet wires having a coating of heat activated adhesive; andplastic molded around the magnet wires with heat of the plastic activating the heat activated adhesive on the magnet wires during molding of the plastic to bond the magnet wires together.2. The apparatus of claim 1 , wherein the plastic includes thermally conductive plastic.3. The apparatus of claim 2 , wherein the heat activated adhesive claim 2 , upon activation claim 2 , bonds the coils of magnet wires into mechanically solid coils to reduce movement of the coils and to improve heat transfer out of the magnet wires.4. The apparatus of claim 1 , wherein the plastic is molded around the magnet wires at a pressure sufficient to deform individual magnet wires into polygonal shapes.5. The apparatus of claim 1 , wherein the activation of the heat activated adhesive on the magnet wires bonds the coils of magnet wires onto mechanically solid coils within the plastic to reduce movement of the coils and improve thermal transfer of heat out of the magnet wires.6. A method of forming an armature for an electric motor claim 1 , comprising:winding magnet wires having a coating of heat activated adhesive thereon in a plurality of slots in a lamination stack on a shaft to form coils; andmolding hot ...

Electric motor and fuel pump using the same

An electric motor has multiple core portions, multiple bobbins covering the respective core portions, and multiple coil windings wound on the respective core portions and bobbins. Each of the bobbins has a first and a second circumferential forward ends, at which a first and a second holding portions are formed. The first holding portion holds a winding-start portion and the second holding portion holds a winding-end portion. The winding-start portion is prevented from being brought into contact with the winding-end portion and main winding portion of the coil winding between the winding-start portion and the winding-end portion.

Rotor for electric rotating machine and method of manufacturing the same

A rotor for an electric rotating machine includes a hollow cylindrical rotor core and a plurality of magnets. The rotor core has a plurality of magnet-receiving holes formed therein. Each of the magnet-receiving holes has a plurality of wall surfaces including a radially innermost wall surface which is positioned radially innermost among the plurality of wall surfaces. Each of the magnets is received in a corresponding one of the magnet-receiving holes of the rotor core. Further, each of the magnets is arranged in the corresponding magnet-receiving hole so that among the thermal resistances between the magnet and the plurality of wall surfaces of the corresponding magnet-receiving hole, the thermal resistance between the magnet and the radially innermost wall surface of the corresponding magnet-receiving hole is lowest.

Encapsulated rotor for permanent magnet submersible motor

A rotor for a submersible motor includes a shaft and a hub. The hub is: disposed around the shaft, torsionally connected to the shaft, and made from a magnetically permeable metal or alloy. The rotor further includes permanent magnets disposed around the hub; and a polymer shroud encapsulating the permanent magnets and molded to the hub.

Robot Drive With Passive Rotor

A substrate transport apparatus including a drive section and a first movable arm assembly. The drive section includes a first motor. The first motor includes a stator and a passive rotor. The first movable arm assembly is connected to the first motor. The substrate transport apparatus is configured for the first movable arm assembly to be positionable in a vacuum chamber with the passive rotor being in communication with an environment inside the vacuum chamber.

TRANSVERSE FLUX ELECTRICAL MACHINE STATOR COMPONENTS

A phase module of a transverse flux electrical machine (TFEM) includes a pair of halves adapted to receive therein a plurality of cores and a coil therein. The cores are discretely located in the phase with radially angularly distributed core-receiving spaces. The plurality of cores and the coil are secured in the halves with resin. The proximal radial portion of the phase module is bored to define the interior diameter of the phase module. A method of assembling a phase module and a kit thereof are encompassed by the present application. 1. A rotatable transverse flux electrical machine (TFEM) comprising: a pair of opposed halve members respectively including a plurality of core-receiving spaces sized and designed to receive, locate and secure therebetween a plurality of cores; and', 'a coil operatively disposed in respect with the cores inside each phase modules., 'a stator including at least one phase module, the at least one phase module comprising'}2. The rotatable transverse flux electrical machine (TFEM) of claim 1 , wherein the plurality of cores comprises respective corresponding pair of poles claim 1 , angularly spaces apart from one another with different angular distances therebetween.3. The rotatable transverse flux electrical machine (TFEM) of claim 2 , wherein at least two adjacent cores claim 2 , and corresponding poles claim 2 , are angularly radially spaced apart with an angle of about 10.8° and angularly radially spaced apart from adjacent cores with a different angle.4. The rotatable transverse flux electrical machine (TFEM) of claim 1 , wherein the at least one phase comprises a first set of at least three adjacent cores claim 1 , and corresponding poles claim 1 , angularly spaced apart with a first angular distance therebetween and further angularly spaced apart from an adjacent second set of at least three adjacent cores claim 1 , and corresponding adjacent poles claim 1 , angularly spaced apart with a second angular distance therebetween.5. ...

Housingless transverse flux electrical machine

A housingless transverse flux electrical machine (TFEM) includes a pair of halves adapted to receive therein a plurality of cores and a coil therein. The halves are the exterior boundary for the environment and the TFEM can be in operating configuration without further housing.

RROTOR ASSEMBLY FOR ELECTRIC MOTOR OF TURBOMACHINE WITH CARBON-CARBON COMPOSITE MAGNET-RETAINING JACKET MEMBER

A rotor assembly for an electric motor for a turbomachine defines an axis of rotation. The rotor assembly includes a jacket member that is hollow and that defines an inner radial surface facing inwardly toward the axis of rotation. Furthermore, the rotor assembly includes a magnet member that is received within the jacket member. The magnet member includes an outer radial surface facing outwardly from the axis of rotation. The jacket member is made of a sintered composite material having carbon filament and a sintered matrix. Additionally, the inner radial surface of the jacket member abuts against the outer radial surface of the magnet member to retain the magnet member in a radial position relative to the axis. 1. A rotor assembly for an electric motor of a turbomachine that defines an axis of rotation comprising:a jacket member that is hollow and that defines an inner radial surface facing inwardly toward the axis of rotation;a magnet member that is received within the jacket member, the magnet member including an outer radial surface facing outwardly from the axis of rotation;the jacket member made of a sintered composite material having carbon filament and a sintered matrix; andthe inner radial surface of the jacket member abutting against the outer radial surface of the magnet member to retain the magnet member in a radial position relative to the axis.2. The rotor assembly of claim 1 , wherein the sintered composite material is a carbon-carbon composite material.3. The rotor assembly of claim 1 , wherein the jacket member has a first end and a second end and an axial length measured between the first end and the second end;wherein the inner radial surface has a radius that is continuously constant for a majority of the axial length of the jacket member.4. The rotor assembly of claim 1 , wherein the inner radial surface defines an inner radius claim 1 , wherein the outer radial surface defines an outer radius claim 1 , and wherein the inner radius is less than ...

STATOR AND METHOD FOR PRODUCING A STATOR OF AN ELECTRIC MACHINE

A method for producing a stator () of an electric machine is provided. The method includes providing a stator () with at least one stator slot () that is bounded by two stator teeth. The method proceeds by introducing electrical conductors () into the at least one stator slot (). At least one conductor () has an expandable coating () applied partially to its surface. The method continues by activating the expandable coating () to bring about an expansion of the coating (), as a result of which the conductors () are fixed within the stator slot (). 1. A method for producing a stator of an electric machine , comprising:providing the stator with at least one stator slot that is bounded by two stator teeth;introducing electrical conductors into the at least one stator slot, with at least one of the conductors having an expandable coating applied partially to its surface;activating the expandable coating to bring about an expansion of the coating and thereby fixing the conductors within the stator slot.2. The method of claim 1 ,wherein the step of activating the expandable coating is carried out by supplying heat.3. The method of claim 1 ,wherein the step of activating the coating forms at least one continuous fluid connection running through the stator slot, said fluid connection being formed by regions of the surface of the at least one conductor that are not covered with the coating.4. The method of claim 1 , further comprising:providing the conductors; andapplying the expandable coating partially to at least one of the conductors.5. The method of claim 1 , further comprising:providing the conductors;applying the expandable coating entirely to the surface of the conductor; andremoving the expandable coating from selected regions of the conductor.6. The method of claim 1 ,wherein the expandable coating applied partially to the surface of at least one conductor is structured in such a way that, between regions of the conductor that protrude from the stator after the ...

Method for manufacturing stator of rotary electric machine

A method for manufacturing a stator of a rotary electric machine includes: assembling an insulator and a stator coil to a tooth; and after assembling, pouring a liquid adhesive into an opening of the insulator from an outer side of the stator coil so as to fix the stator coil to a stator core.

Electric Winding Body with Optimised Performance Characteristics and Improved Protection Against Overheating

The invention relates to an electric winding body which has improved performance characteristics as a result of being impregnated with a thermoplastic material filled with phase change material. These performance characteristics relate to improved heat dissipation, vibration damping, fixing of the coils, and improved protection against overheating by utilizing the sensitive and latent heat storage properties when the polymer units transition from the semi-crystalline state into the amorphous state. 1. An electrical winding form comprising electrically conductive windings around a core , wherein the windings have cavities between them that are filled in a form-fitting manner by a thermoplastic material , the thermoplastic material comprising a mixture ofa) a network-forming thermoplastic elastomer which, in the range of 120-150° C., has flowability and a melt flow index of at least 15 g/10 min, at 190° C./2.16 kg measured per ISO 1133-1 andb) a phase change material having a phase change temperature between 40° C. and 140° C., where the phase change material is present in the thermoplastic material in a proportion of 50% to 85% by weight.2. The winding form as claimed in claim 1 , wherein the network-forming thermoplastic elastomer is a styrene-containing block copolymer and is present in a proportion of at least 10% by weight claim 1 , based on the weight of the thermoplastics material.3. The winding form as claimed in claim 1 , wherein the phase change material has a melting temperature between 40° C. and 140° C.4. The electrical winding form as claimed in claim 1 , wherein the thermoplastic material has a breakdown temperature that is above the electrical winding form critical use temperature.5. The electrical winding form as claimed in one or more of to claim 1 , characterized in that the phase change material is present in the thermoplastic material in a proportion of 70% to 85% by weight.6. The electrical winding form as claimed in claim 1 , wherein the ...

ELECTRIC MACHINE HAVING A STATOR AND METHOD THEREOF FOR PRODUCING A STATOR OF THIS TYPE

The invention relates to an electric machine () having a stator (), with magnetic-field-conductive material, in which substantially axial grooves () are positioned, wherein a winding system (), which is surrounded and/or penetrated by impregnating resin, is provided in the grooves, wherein the impregnating resin has energy-absorbing particles (). 16.-. (canceled)7. A method for producing an electric machine , comprising:providing a magnetic-field-conductive body with grooves;inserting a winding system into the grooves of the magnetic-field-conductive body; andimpregnating the winding system with an impregnating resin containing particles in a substantially thread-shaped manner, with the particles in the impregnating resin forming during or after impregnation of the winding system with the impregnating resin oscillation-absorbing structures within the impregnating resin by a physical and/or chemical process, such that the particles assume a spiral, helical, spherical, zigzag-shaped or skein-like configuration.8. The method of claim 7 , further comprising allowing the impregnating resin to cure claim 7 , with the particles being dispersed within the cured impregnating resin homogeneously or in accordance with a predefined distribution.9. The method of claim 8 , wherein the particles are arranged at oscillation loops of the winding system.10. An electric machine claim 8 , comprising:a stator having a magnetic-field-conductive material with substantially axial grooves;a winding system received in the grooves; andimpregnating resin surrounding and/or penetrating the winding system, said impregnating resin containing oscillation-absorbing particles having a spiral, helical, spherical, zigzag-shaped or skein-like configuration.11. The electric machine of claim 10 , wherein the particles are arranged on sections or components of the magnetic-field-conductive material that are subjected to oscillation.12. The electric machine of claim 10 , wherein the particles are arranged ...

Electric motor

An electric motor, especially for a fluid-handling system, comprises an external stator and an internal rotor mounted to rotate around an axis. The said external stator comprises a multiplicity of ferromagnetic pole pieces disposed around the axis and having winding cores extending substantially radially, an injection-molded plastic structure having a bushing and, molded thereon, winding supports enveloping the winding cores, as well as stator windings received on the winding supports. The bushing comprises a sleeve having a closed inner face extending radially inside the pole pieces and an end piece that closes the sleeve in the end region. The rotor is disposed inside the sleeve and mounted in a bearing disposed in the end piece.

HIGH FREQUENCY ELECTRIC MOTOR, CONTROL SYSTEM, AND METHOD OF MANUFACTURE

A propulsion system for an aircraft or other vehicle can include an electric motor with a rotor and a stator. A cooling arrangement for the electric motor can include one or more of: a heat sink that is disposed within an internal area of the motor and that supports, within the internal area, one or more power-electronic components for operation of the electric motor; and a plurality of flow channels that are formed along at least one of the rotor and the stator. The flow channels can be arranged to route ambient air past the at least one of the rotor and the stator during operation of the aircraft or other vehicle. 1. A propulsion system for an aircraft or other vehicle , the propulsion system comprising:an electric motor that includes a rotor and a stator, the stator being arranged radially inwardly from the rotor and defining an internal area that is radially inward from the stator; 'a heat sink that is disposed within the internal area and supports, within the internal area, one or more power-electronic components for operation of the electric motor; and', 'a cooling arrangement that includesa plurality of flow channels that are formed along the stator, the flow channels being arranged to route ambient air past the stator during operation of the aircraft or other vehicle.2. The propulsion system of claim 1 , wherein the stator includes a plurality of air-gap wound coils supported by a yoke; andwherein a first set of the flow channels are formed along a radially outer profile of the stator and open into an air gap that separates the stator and the rotor.3. The propulsions system of claim 2 , wherein a second set of the flow channels are formed as axially extending flow channels within the stator.4. The propulsion system of claim 3 , wherein the stator is integrated into a nacelle of a turbofan assembly; andwherein vents are provided in the nacelle to route the ambient air to the flow channels.5. A propulsion system for an aircraft or other vehicle claim 3 , the ...

LAMINATION STACKS FOR ELECTRIC MOTORS/GENERATORS

A process for producing metal bodies, in particular for the production of stators for use in electric motors, has a plurality of steps. Firstly, a stack of a plurality of sheet metal parts is introduced into a cavity of a tool, with thermally curing adhesive layers being provided between the sheet metal parts. The stack is then heated to effect curing of the adhesive layers, forming the metal body. During heating, a pressure is applied to the stack. At least one of the following parameters is measured during the process: applied pressure, temperature of the stack, height of the stack. A prescribed height of the stack is set by use of a temperature-pressure control. The BPS™, BPS-Backpaketiersystem™ or Backpaketiersystem™ according to the invention makes efficient and precise production of stators possible, is self-learning and allows measurement, regulation and recording of all production parameters during production of each single stator. In particular, all production parameters can be afterwards assigned to an individual stator. 1. A process for producing metal bodies , in particular for the production of lamination packets for use in electric motors , which comprises the following steps:a) formation of a stack of a plurality of sheet metal parts in a cavity of a tool, with thermally curing adhesive layers being provided between the sheet metal parts, andb) heating of the stack to cure the adhesive layers and to form the metal body,c) with a pressure being applied to the stack during heating,whereind) at least one of the following parameters is measured during the process: applied pressure, temperature of the stack, height of the stack, and in thate) a prescribed height of the stack is set by use of a temperature-pressure control.2. The process according to claim 1 , wherein the tool is configured as cavity claim 1 , with the stack being formed within the cavity by means of a stamping operation and claim 1 , in particular claim 1 , the cavity completely or partly ...

METHOD FOR MANUFACTURING ROTARY ELECTRIC MACHINE ROTOR

A method for manufacturing a rotary electric machine rotor includes forming core block elements; inserting magnets in corresponding one of the magnet holes; forming magnet core blocks by injecting a molten resin into each of the magnet holes from above the magnet, solidifying the molten resin, and thereby forming a resin portion so as to integrate each of the core block elements and the magnets. End surfaces of the magnets are exposed on a first end surface; and the molten resin is injected at a second end surface. The method also includes forming a rotor by stacking and integrating plural magnet core blocks, the plural magnet core blocks being stacked such that first end surfaces of two magnet core blocks that are disposed at both ends in an axial direction constitute end surfaces at both ends of the rotor in the axial direction. 1. A method for manufacturing a rotary electric machine rotor comprising:forming core block elements, wherein each of the core block elements has a shaft hole at the center and plural magnet holes around the shaft hole;inserting magnets into the magnet holes; forming magnet core blocks by injecting a molten resin into each of the magnet holes, solidifying the molten resin, and thereby forming a resin portion so as to integrate the core block elements and the magnets, wherein each of the magnet core blocks has axial end surfaces that include a first end surface and a second end surface, and the first end surface is on an opposite side from the second end surface, and the molten resin is injected at the second end surface, and end surfaces of the magnets are exposed on the first end surface;forming a rotor by stacking and integrating plural magnet core blocks such that center axes of the magnet core blocks align with each other, the plural magnet core blocks being stacked such that the first end surfaces of two magnet core blocks that are disposed at both ends in an axial direction constitute end surfaces at both ends of the rotor in the ...

STATOR FOR ROTARY ELECTRIC MACHINE

Provided is a method of manufacturing a stator for a rotary electric machine that can easily form the stator using coil segments. A first coil segment is moved outward in a radial direction after being arranged inside a stator core and is inserted into an outer diameter side of a slot, and a second coil segment is moved outward in the radial direction after being arranged inside the stator core and is inserted into an inner diameter side of the slot. Then, one end portions of the first and second coil segments protruding from an end face of the stator core are joined to each other, and the other end portions of the first and second coil segments protruding from an end face of the stator core are joined to each other. 1. A method of manufacturing a stator for a rotary electric machine including: a stator core; and a coil including a plurality of coil segments inserted respectively into a plurality of slots formed in a circumferential direction at an inner periphery of the stator core and protruding outward in an axial direction of the stator core from the slots ,the plurality of coil segments including a plurality of first coil segments inserted respectively into the plurality of slots and a plurality of second coil segments inserted respectively into the plurality of slots,the first coil segments including one end portions that are joined to one end portions of the second coil segments inserted into the another slots located at a position apart in one circumferential direction of the stator core from the slots into which the first coil segments,the first coil segments including the other end portions that are joined to the other end portions of the second coil segments inserted into the further another slots located at a position apart in the other circumferential direction of the stator core from the slots into which the first coil segments,the method comprising:a first step in which the plurality of first coil segments are disposed inside the stator core, the ...

ROTOR ASSEMBLY FOR ELECTRIC MOTOR

A rotor assembly is provided for an electric motor. The rotor assembly includes: a cylindrical magnet member having magnetization in both axial and radial directions, the magnet member being formed from a moldable magnetic material; and an output shaft receivable within the magnet member. An inner surface of the magnet member and an outer surface of the output shaft have complementarily-engagable interface elements thereon to prevent or limit dislocation of the magnet member and output shaft, and at least one of the interface elements is formed by overmolding of the magnet member and output shaft with the other of magnet member and output shaft. 1. A rotor assembly comprising:a cylindrical magnet member having magnetization in both axial and radial directions; andan output shaft receivable within the magnet member;wherein an inner surface of the magnet member and an outer surface of the output shaft have complementarily-engagable interface elements thereon to prevent or limit dislocation of the magnet member and output shaft, at least one of the interface elements being formed by overmolding of one of the magnet member and output shaft with the other of magnet member and output shaft.2. The rotor assembly as claimed in claim 1 , wherein the magnet member is formed from a mixture of magnetic material and polymer resin claim 1 , and the magnetic material comprises rare earth magnetic material.3. The rotor assembly as claimed in claim 1 , wherein the output shaft is formed from a moldable material claim 1 , and the magnet member being formed from a moldable magnetic material.4. The rotor assembly as claimed in claim 1 , wherein the output shaft comprises an integrally formed pinion gear.5. The rotor assembly as claimed in claim 1 , wherein the output shaft comprises at least one base portion.6. The rotor assembly as claimed in claim 1 , wherein the magnet member is a multi-pole magnet member.7. The rotor assembly as claimed in claim 6 , wherein the magnet member has ...

STATOR FOR ELECTRIC MOTOR

The invention relates to a stator for an electric motor, including at least one winding of a wire made of an electrical conductor composed primarily of aluminum covered with a thickness of between 30 and 100 μm of an insulator including at least one polymer chosen from among the polyaryletherketones (PAEK). 1. A stator for an electric motor , the stator including at least one winding of a wire made of an electrical conductor composed primarily of aluminum covered with a thickness of between 30 and 100 μm of an insulator including at least one polymer chosen from among the polyaryletherketones (PAEK).2. The stator according to claim 1 , the insulator including at least polyether ether ketone (PEEK).3. The stator according to claim 1 , the slot-fill factor of the stator being higher than 50%.4. The stator according to claim 1 , being impregnated with an epoxy resin claim 1 , with a polyesterimide enamel or with a silicone.5. The stator according to claim 1 , including a sheet of an aramid-based insulator claim 1 , of a fluorinated resin claim 1 , in particular of PTFE claim 1 , or of PEEK claim 1 , around the phase windings.6. The stator according to claim 1 , the electrical conductor being composed entirely of aluminum.7. An electric motor including a stator according to .8. A compressor operating with ammonia as the refrigerant claim 7 , including an electric motor according to . The present invention relates to a stator for an electric motor, and, more particularly, to a stator for a motor for a compressor operating with ammonia as the refrigerant.Freon gases are harmful for the environment since they are powerful greenhouse gases and damage the ozone layer.To reduce these negative effects on the environment, the refrigeration industry, which makes heavy use of freon gases, is seeking to replace them with “cleaner” gases, such as ammonia.A number of known setups now use ammonia as the heat transfer fluid. However, in these setups, the gas never flows through the ...

PERMANENT MAGNET ROTOR WITH DISTRIBUTED PERMANENT MAGNETS

A permanent magnet rotor of an electric motor, consisting of a return body and a number of sintered permanent magnets distributed on the case of the return body at intervals, connected to a plastic mass filled with hard magnetic material. The objective of the present invention is to ensure that a generic permanent magnet rotor can be simply and economically produced, along with allowing a great degree of freedom regarding the design of the pole faces, wherein high rigidity and security of the mechanical connection between the permanent magnets and the return body are guaranteed. 1. A permanent magnet rotor of an electric motor , the rotor comprising:a return body;a number of sintered permanent magnets distributed around the return body at intervals; anda plastic mass filled with hard magnetic material connected to the permanent magnets; wherein the permanent magnets are plate-shaped block magnets, and the hard magnetic material in the plastic mass is oriented towards magnetic field lines of the permanent magnets due to the force of the permanent magnets.2. The permanent magnet rotor according to claim 1 , wherein the plastic mass forms a cylinder surface-shaped outer contour.3. The permanent magnet rotor according to claim 1 , wherein the plastic mass has a number of flat areas on its radial outer contour.4. The permanent magnet rotor according to claim 1 , wherein the plastic mass has grooves on its outer contour.5. The permanent magnet rotor according to claim 4 , wherein the grooves form an inclined angle with axially parallel lines on the outer contour.6. The permanent magnet rotor according to claim 1 , wherein the permanent magnets are spaced from each other and wherein the return body has radially oriented projections between the spaced magnets.7. The permanent magnet rotor according to claim 6 , wherein the projections widen radially towards the outside.8. The permanent magnet rotor according to claim 7 , wherein the permanent magnets are each wider than the ...

HIGH TEMPERATURE LAMINATED STATOR CORES AND METHODS FOR THE MANUFACTURE THEREOF

Embodiments of laminated stator cores suitable for usage in high temperature applications are provided, as are embodiments of methods for manufacturing high temperature laminated stator core. In one embodiment, the method includes obtaining a plurality of coated laminates each comprising a laminate over which a coating precursor layer is formed. The coating precursor layer contain inorganic dielectric particles having a softening point. The plurality of coated laminates are arranged in a laminate stack, which is then fired at temperatures equal to or greater than the softening point of the inorganic dielectric particles. During firing, a compressive force is applied to the laminate stack sufficient to consolidate the inorganic dielectric particles into a plurality of coherent interlaminate dielectric layers electrically insulating and bonding together the plurality of coated laminates as the high temperature laminated stator core. 1. A high temperature laminated stator core , comprising:a plurality of laminates each composed of a magnetically-permeable material; anda plurality of interlaminate dielectric layers interspersed with the plurality of laminates, the plurality of interlaminate dielectric layers electrically insulating and bonding together the plurality of laminates in a stack;wherein the plurality of interlaminate dielectric layers each comprise consolidated glass particles having a softening point less than the melt point of the magnetically-permeable material and having a coefficient of thermal expansion (CTE) less than the CTE of the magnetically-permeable material.2. The high temperature laminated stator core of wherein the CTE of the consolidated glass particles is equal to or greater than 9 parts per million per degree Celsius.3. The high temperature laminated stator core of wherein the CTE of the magnetically-permeable material is between about 10 and about 20 parts per million per degree Celsius.4. The high temperature laminated stator core of ...

Stator for rotating electric machine and method of manufacturing the stator

A stator includes an annular stator core having slots formed therein, a stator coil received in the slots, and insulating sheets each being interposed, in a corresponding one of the slots, between the stator coil and an interior wall surface of the stator core defining the corresponding slot. Each of the insulating sheets includes a sheet-like substrate and a resin layer provided on an outer surface of the substrate. The resin layer is formed of a curable and foamable resin that is foamed and cured by external stimulation. Each of the insulating sheets has an extension portion located outside the corresponding slot and extending nonparallel to an axial direction of the stator core so as to face an axial end face of the stator core. In each of the insulating sheets, the resin layer is provided, on the outer surface of the substrate, in a region including the extension portion.

Vacuum desorption, impregnation and curing system, vacuum desorption device, and vacuum desorption process for protective layer of magnetic pole

A process and process apparatus for forming a protective coating on a magnetic pole of a permanent magnet motor. The process for forming a protective coating on a magnetic pole of a permanent magnet motor includes: horizontally placing a motor rotor, and controlling to perform, at positions of an inlet and an outlet operating on a vacuum bag in a current state, vacuumization and adhesive injection only on an arc section located at the bottom of the motor rotor; and driving the motor rotor to rotate by a predetermined angle after the adhesive in the arc section is initially cured so as to rotate the next arc section in which no adhesive is injected to the bottom, until all arc sections in the circumferential direction of the motor rotor are injected with the adhesive.

ELECTRICAL APPARATUS AND METHODS FOR FORMING AN ELECTRICAL MACHINE AND AN ELECTRICAL APPARATUS

A method for manufacturing an electrical machine includes forming a plurality of laminations for a stator or a rotor, each lamination including a cooling aperture; stacking the laminations together, the cooling apertures being aligned to form a cooling passage; securing the stacked laminations together; and sealing the laminations together at at least one desired location by applying metal plating to the stacked and secured laminations at the at least one desired location. 1. A method for manufacturing an electrical machine , comprising:forming a plurality of laminations for a stator or a rotor, each lamination including a cooling aperture;stacking the laminations together, the cooling apertures being aligned to form a cooling passage;securing the stacked laminations together; andsealing the laminations together at at least one desired location by applying metal plating to the stacked and secured laminations at the at least one desired location.2. The method of claim 1 , wherein the at least one desired location is the cooling passage claim 1 , the cooling passage including a surface; the metal plating being applied to the laminations along the surface of the cooling passage.3. The method of claim 2 , wherein the metal plating is electroless nickel plating.4. The method of claim 1 , wherein each lamination is coated with an insulating material; and wherein the metal plating is applied over the insulating material.5. The method of claim 1 , the at least one desired location including the cooling passage claim 1 , wherein the applying of the metal plating includes passing the metal plating solution through the cooling passage.6. The method of claim 5 , further comprising heating the stacked laminations to a desired plating temperature prior to and/or during the passing of the metal plating solution through the cooling passage.7. The method of claim 1 , wherein the applying of the metal plating includes immersing the at least one desired location in a bath of metal ...

A CONDUCTOR BAR FOR AN ELECTRIC MACHINE

The present disclosure relates to an insulated conductor bar, a use of a certain material for manufacturing an insulated conductor bar, and to a method for impregnating an insulated conductor bar. An object of the invention is to provide an alternative impregnation of a conductor bar for an electric machine. The invention discloses an insulated conductor bar for an electric machine having an insulation from a tape made from mica material, mica material on a glass fabric, or mica material on a polyester film, whereas a thermoplastic material is applied to the mica material or the mica material on a glass fabric. 1. An insulated conductor bar for an electric machine , comprising:an insulation comprised of a tape made from one of a mica material, a mica material on a glass fabric, or a mica material on a polyester film, wherein a thermoplastic material is applied to the one of the mica material, the mica material on the glass fabric, or the mica material on the polyester film.2. The insulated conductor bar according to claim 1 , wherein the thermoplastic material is dispersed or scattered on the mica material on the glass fabric claim 1 , and the mica material on the glass fabric is fused with the thermoplastic material.3. The insulated conductor bar according to claim 2 , wherein a method of calendaring is used for fusing the mica material on the glass fabric and the thermoplastic material.4. The insulated conductor bar according to claim 1 , wherein the thermoplastic material is created from at least a precursor material claim 1 , at least a monomer claim 1 , or at least an oligomer claim 1 , and the at least a precursor material claim 1 , the at least a monomer claim 1 , or the at least an oligomer is converted to the thermoplastic material in a moulding tool for moulding the insulated conductor bar.5. The insulated conductor bar according to claim 4 , wherein the thermoplastic material is the precursor of polyamide 6 (PA6) claim 4 , caprolactam claim 4 , or a ...

METHOD AND APPARATUS FOR MANUFACTURING INTERIOR PERMANENT MAGNET-TYPE INNER ROTOR

A manufacturing method for obtaining an interior permanent magnet-type inner rotor without thermal demagnetization due to shrink fitting to a rotating shaft includes: a shrink fitting step of heating a rotor core having slots and inserting a rotating shaft into a shaft hole to shrink-fit the rotor core; and a filling step of filling the rotor core slots in a residual heat state after the shrink fitting step with a flowable mixture of a binder resin heated to a flowable state and anisotropic magnet particles, in oriented magnetic fields This allows, in similar manufacturing steps, an inner rotor of which the magnetic poles are anisotropic bond magnets formed by solidifying the flowable mixture in the slots and a conventional inner rotor of which the magnetic poles are sintered magnets. This allows both the inner rotors concurrently and in parallel (mixed flow production) in an already existing IPM motor manufacturing line. 15-. (canceled)6. An apparatus for manufacturing an interior permanent magnet-type inner rotor , the apparatus comprising:a holding mold that can hold a core assembly comprising a rotating shaft, a rotor core and an associated rotating body from the end at which at least the associated rotating body is located and support the end surface of the rotor core at said end, the rotor core having a plurality of slots arranged evenly around a shaft hole into which the rotating shaft is fitted, the associated rotating body having a portion that projects beyond the outer diameter of the rotor core;an orienting mold having a housing part that can house the rotor core from the other end of the core assembly, a plurality of orienting yokes that are arranged evenly around the housing part and induce oriented magnetic fields to be applied to the slots, and permanent magnets that are oriented magnetic field sources arranged around the orienting yokes; anda filling mold that fills a flowable mixture into the slots from the end surface of the rotor core located at ...

System and method for preventing stator permanent magnet demagnetization during vacuum pressure impregnation

A permanent magnet electrical machine includes a stator having conductive windings wound thereon and one or more permanent magnets embedded in the stator. A magnetic keeper element is positioned on the stator so as to form a magnetic flux path with the permanent magnets, with the magnetic keeper element closing the magnetic flux path of the permanent magnets by providing a low reluctance flux path to magnetic flux generated by the permanent magnets. A vacuum pressure impregnation (VPI) process is performed on the stator to increase a thermal conductivity of the windings, with the VPI process including a curing step that is performed at a selected temperature. The magnetic keeper element sets an operating point of the permanent magnets to an internal flux density level above a demagnetization threshold associated with the selected temperature at which the curing step is performed.

METHOD FOR PRODUCING A ROTOR FOR AN ELECTRIC ROTATING MACHINE

A method for producing a rotor for an electric rotating machine includes spraying in a rolling manner a first metallic material and a second metallic material, which is different from the first metallic material, onto at least part of a substantially cylindrical outer surface of a shaft body by a thermal spraying method to form on the shaft body a coating which forms at least part of a squirrel cage. 115.-. (canceled)16. A method for producing a rotor for an electric rotating machine , said method comprising spraying in a rolling manner a first metallic material and a second metallic material , which is different from the first metallic material , onto at least part of a substantially cylindrical outer surface of a shaft body by a thermal spraying method to form on the shaft body a coating which forms at least part of a squirrel cage.17. The method of claim 16 , wherein the thermal spraying method includes cold gas spraying.18. The method of claim 16 , wherein the second metallic material is a soft-magnetic material.19. The method of claim 16 , further comprising producing the shaft body from the second metallic material.20. The method of claim 16 , wherein the at least part of the squirrel cage is formed by the first metallic material.21. The method of claim 20 , wherein the squirrel cage is embedded completely into the rotor.22. The method of claim 16 , wherein the first metallic material has a conductivity of more than 40 MS/m.23. The method of claim 16 , wherein the first metallic material is sprayed with a first spraying device and the second metallic material is sprayed with a second spraying device.24. The method of claim 16 , wherein the spraying of the first and second metallic materials in a rolling manner is implemented alternately and/or on an evolvent path.25. The method of claim 16 , further comprising spraying a third material onto at least part of the substantially cylindrical outer surface of the shaft body such as to insulate the first and second ...

PROCESS AND PROCESS APPARATUS FOR FORMING PROTECTIVE COATING ON MAGNETIC POLE OF PERMANENT MAGNET MOTOR

A process and process apparatus for forming a protective coating on a magnetic pole of a permanent magnet motor. The process for forming a protective coating on a magnetic pole of a permanent magnet motor includes: horizontally placing a motor rotor, and controlling to perform, at positions of an inlet and an outlet operating on a vacuum bag in a current state, vacuumization and adhesive injection only on an arc section located at the bottom of the motor rotor; and driving the motor rotor to rotate by a predetermined angle after the adhesive in the arc section is initially cured so as to rotate the next arc section in which no adhesive is injected to the bottom, until all arc sections in the circumferential direction of the motor rotor are injected with the adhesive. 1. A process apparatus for forming a protective coating for a magnetic pole of a permanent magnet motor , wherein an inner wall of a magnet yoke wall of a motor rotor of the permanent magnet motor is provided with a vacuum bag , and the inner wall of the magnet yoke wall and an outer peripheral wall of the vacuum bag form a mold cavity required for injection of an adhesive , the process apparatus comprising:a positioning component configured to axially position the motor rotor at a horizontal position;a drive component configured to drive the motor rotor to rotate with respect to a horizontal central axis of the motor rotor; andan adhesive injection assembly configured to evacuate an arc section of the motor rotor located at a bottom of the motor rotor and to inject the adhesive into the arc section.2. (canceled)3. The process apparatus according to claim 1 , further comprising a vibration component claim 1 , wherein the vibration component comprises a first vibration component located at an outer side of the motor rotor claim 1 , and the first vibration component allows an outer peripheral wall of the arc section located at the bottom of the motor rotor to vibrate.4. (canceled)5. (canceled)6. The ...

Electromagnetic motor or generator comprising a rotor with magnetized structures comprising individual magnets and a stator with concentric windings

A motor or electromagnetic generator with a rotor ( 3 ) and at least one stator ( 1, 2 ), the rotor ( 3 ) comprising having permanent magnets ( 12 ) rotating around a median shaft and the stator ( 1, 2 ) having windings ( 5 ). The rotor ( 3 ) comprises magnet structures forming magnet poles composed of a plurality of unit magnets ( 15 ), covering discs ( 17 ) being axially arranged on each of two opposite axial faces of the rotor ( 3 ), the covering discs ( 17 ) being made of a composite material, the covering discs ( 17 ) and the magnet structures ( 12 ) being coated in an outer coating layer of composite material defining the outer contour of said at least one rotor ( 3 ). The stator ( 1, 2 ) comprises concentric windings ( 5 ) comprising a series of blocks ( 4 ) with the windings ( 5 ) wound around each block ( 4 ), the blocks ( 4 ) being rigidly attached to each other.

Coil wiring unit of drive motor for vehicle and manufacturing method thereof

A coil wiring unit of a drive motor for a vehicle is provided. The unit includes a bus bar assembly that has a plurality of bus bars for connecting coils of the drive motor to each phases stacked in a longitudinal direction. A plurality of insulating sheets are disposed between each of the bus bars and correspond to the shape of each of the bus bars.

ELECTRIC MOTOR AND ELECTRIC MOTOR MANUFACTURING METHOD

An electric motor includes: a stator that has a stator core and has coils that are formed of an electric wire wound on the stator core and form a plurality of phases; a resin covering the stator; and a wire break facilitator that facilitates the electric wire to break at a time of abnormality. In the electric motor having the stator in which the coils are covered with molding resin, the wire break facilitator is attached to at least one of: a transition wire part between the coils wound on the stator core; a connection part at a neutral point; and a connection part of a lead wire. 1. An electric motor , comprising:a stator including: a stator core; and coils that are formed of an electric wire wound on the stator core and form a plurality of phases;a resin covering the stator; anda wire break facilitator that facilitates the electric wire to break,wherein the wire break facilitator is attached to at least one of: a transition wire part between the coils wound on the stator core; a connection part at a neutral point of the plurality of phases formed by the coils; and a connection part between the electric wire and a lead wire that supplies electric power to the electric wire from outside.2. The electric motor according to claim 1 , wherein the wire break facilitator is a space containing air.3. The electric motor according to claim 1 , wherein the wire break facilitator is formed of a member that melts into a liquid state at a temperature higher than a higher temperature of a molding temperature of the resin and a maximum achieving coil temperature when the electric motor is operating.4. The electric motor according to claim 3 , wherein the member that melts into a liquid state is made of at least any one of nylon 6 claim 3 , polybutylene terephthalate claim 3 , polyvinyl alcohol claim 3 , polyvinyl chloride claim 3 , polyvinylidene chloride claim 3 , polyacetal claim 3 , nylon 12 claim 3 , polymethyl methacrylate claim 3 , polyethylene terephthalate claim 3 , ...

Manufacturing method of segment coil

A manufacturing method of a segment coil includes i) bending a wire assembly in which a plurality of conducting wires are twisted together in a manner such that the conducting wires are able to slide with respect to one another, and ii) compression molding the bent wire assembly.

INTERLOCKING ARRANGEMENT FOR ELECTRIC MOTOR

Embodiments of the invention relate to arrangements for connecting together elements of an electric motor or generator such as a rotor or stator. The rotor () or the stator () may each include a first component () that has a common circumference with a corresponding second component (). In order to connect the first and second components together the first component has one or more recesses or grooves () distributed around the circumference and the corresponding second component has one or more resiliently deformable protrusions (). The resiliently deformable protrusions are arranged to protrude into the one or more recesses so as to press against side walls of the recesses and resist relative rotation of the first and second components. 1. An electric motor or generator , comprising:a rotor and a stator,wherein at least one of the rotor and stator comprises a first component and a second component having a common circumference, the first component having one or more recesses distributed around the common circumference and the second component having one or more resiliently deformable protrusions arranged to protrude into the one or more recesses so as to press against side walls of the recesses to resist relative rotation of the first and second components;wherein the first component is fitted to the second component by heating and subsequent cooling so as to form an interference fit between the first component and the second component and to resiliently deform the protrusions against the side walls of the recesses; andwherein the first component is fitted to the second component by sliding the protrusions into the recesses so as to align the respective components prior to cooling.2. An electric motor or generator according to claim 1 , wherein two protrusions protrude into each recess.3. An electric motor or generator according to claim 2 , wherein each protrusion in a recess can resiliently deform independently of the other protrusion in the recess.4. An electric ...

HYDROELECTRICAL MACHINE COIL INSULATION SYSTEM AND METHOD

An insulation system and method are disclosed for insulating formed coils of hydroelectric machines, such as a hydroelectric generator. The system includes strand/turn insulation that may include one or more layers of different materials, depending upon the dielectric requirements. A ground wall insulation is applied over the group of turns. The coil may be sized in a slot cell section. Additional insulation layers are provided, including a slot corona suppression insulation that extends just beyond stator slots, a voltage grading layer, and an armor layer. Time temperature profiles and preheating may be used to cure coil sections via press and heat. The resulting system is suitable for installation in situ, and affords superior resistance to degradation. 1. A hydroelectric machine formed coil insulation system , comprising:turn insulation disposed over each successive turn of the formed coil;multi-layer of mica ground wall insulation disposed over multiple turns of the coil;slot corona suppression insulation disposed over the ground wall insulation of slot cell sections of the coil and extending beyond ends of a core of the machine;voltage grading insulation disposed over at least a portion of the slot corona suppression insulation and extending beyond the slot corona suppression insulation at ends of the coil;armor insulation disposed over ends of the coil and at least a portion of coil leads; anda section of the formed coil formed by a first pressing force and a first temperature based on a time temperature profile.2. The system of claim 1 , wherein the time temperature profile comprises a lubricity window of time.3. The system of claim 2 , wherein the section of the formed coil is formed by applying a second pressing force during the lubricity window of time.4. The system of claim 1 , wherein the section of the formed coil is formed by preheating the section of the formed coil before applying the first pressing force and the first temperature.5. The system of ...

Coil, Rotating Electrical Machine Equipped with Same, and Method for Manufacturing Same

Provided are a coil having excellent insulation properties, a rotating electrical machine equipped with the same, and a method for manufacturing the same. The coil ( 60 ) has a covered portion where a conductive body ( 602 ) is covered with an insulating film ( 612 ) and a stripped portion where the insulating film is stripped off, and the stripped portion is electrophoretically coated with a resin material ( 601 ). The coil ( 60 ) may have a configuration wherein segment conductors ( 28 ) each having a covered portion and stripped. portion are included, connection parts are formed by the stripped portions of two different segment conductors ( 28 ) being connected cit coil ends ( 62 ), and the thickness of the resin material ( 601 ) is no more than the thickness of the insulating film ( 612 ) at the boundary portion ( 630 ) between the covered portion and the stripped portion.

ROTOR FOR AN ELECTRIC MOTOR, ASSOCIATED MOTOR SHAFT, AND METHOD FOR PRODUCING SAID MOTOR SHAFT AND ROTOR

A rotor () for an electric motor has a force-transmission region () which is operatively connected to a motor shaft (). A torque-transmission region () which is composed of fibre composite materials is adjacent to the force-transmission region (). A magnetic connection region () and a region () for magnetic field guidance with magnets () are arranged on that side of the torque-transmission region () which is situated opposite the force-transmission region (). The motor shaft can also be formed from fibre composite materials. Since the magnetic connection region () has a plastic which is provided with a magnetic or magnetizable filler, a rotor for an electric motor and also a motor shaft which interacts with said rotor which are of lightweight construction are provided, said rotor and motor shaft meeting the required performance criteria. 2. Rotor according to claim 1 , wherein the magnetic or magnetizable filler is a soft magnetic filler and wherein the thermoplastic plastics material as a polymer material comprises a filling level of more than 70 percent by volume.3. Rotor according to claim 1 , wherein the magnetic or magnetizable filler is a soft magnetic filler and wherein grains of the soft magnetic filler are electrically insulated by the thermoplastic plastics.4. Rotor according to claim 1 , wherein the force transmission region is also formed by at least one of fiber composite materials or formed by injection molding.5. Rotor according to claim 1 , wherein a density of the fiber composite materials is lower in the torque transmission region than a density of the thermoplastic plastics provided with the magnetic or magnetizable filler in the magnetic connection region.6. Rotor according to claim 1 , wherein the magnets are held in positively locking manner in the magnetic field guidance region.710a. Rotor according to claim 1 , wherein the rotor is configured as at least one of an internal rotor or as at least one disk ().8. Rotor according to claim 7 , ...

ROTATING ELECTRICAL MACHINE STATOR AND METHOD FOR MANUFACTURING ROTATING ELECTRICAL MACHINE STATOR

A rotating electrical machine stator and a method for manufacturing a rotating electrical machine stator with high productivity. A rotating electrical machine stator includes a stator core having a slot; and a coil having a leg part including a held-in-slot part held in the slot and a portion extending from the held-in-slot part, and a resin foam is provided between an inner surface of the slot and an outer surface of the held-in-slot part facing the inner surface of the slot. The coil is formed by joining together a plurality of segment conductors each having a joint part, and a conductive joint material is disposed between a pair of joint parts facing each other in the slot. 1. A method for manufacturing a rotating electrical machine stator including a stator core having a slot; and a coil having a leg part including a held-in-slot part held in the slot and a portion extending from the held-in-slot part , the coil is formed by joining a plurality of segment conductors together,', 'the leg parts of the plurality of segment conductors each are provided with a joint part that is joined to another one of the segment conductors with a conductive joint material that joins by heating, and, 'wherein'} a resin disposition step of disposing a resin foam being before foaming on at least either one of an inner surface of the slot and an outer surface of the held-in-slot part facing the inner surface of the slot;', 'a held-in-slot part disposition step of disposing a plurality of the held-in-slot parts in the slot such that a pair of the joint parts to be joined together face each other and the conductive joint material is disposed between the pair of the joint parts facing each other; and', 'a heating step of heating the resin foam and the conductive joint material after the held-in-slot part disposition step, to foam the resin foam and join the pair of the joint parts together with the conductive joint material., 'the method comprises2. The method for manufacturing a ...

INSULATION OF WINDING ENDS OF A STATOR WINDING

A stator of an electric machine includes a laminated core having slots for receiving windings of a multiphase winding system. The windings have winding ends, which are encased with an insulator across a partial length. In order to encase the winding ends with the insulator, a strand of a thermoplastic material is extruded onto the winding ends via a nozzle. During extrusion, the nozzle is moved relative to the winding end along the longitudinal extent thereof and an oscillating movement of the nozzle transversely to the longitudinal extent of the winding end overlays the movement along the longitudinal extent. As a result the thermoplastic material lies on the winding end and around the respective winding end in the form of loops. 1. A method of producing a stator of an electric machine , in particular a rotating electric machine , said method comprising:introducing slots into a laminated core;introducing windings of a multiphase winding system into the slots;extruding a strand of thermoplastic material via a nozzle onto a winding end of the windings to form an insulator which encases the winding end;while extruding the strand moving the nozzle relative to the winding end along a longitudinal extent thereof; andoverlaying a movement of the nozzle along the longitudinal extent with an oscillating movement of the nozzle directed transversely to the longitudinal extent of the winding end and having an oscillation frequency so that the thermoplastic material lies on the winding end and about the winding end in the form of loops.2. The method of claim 1 , wherein the movement of the nozzle along the longitudinal extent of the winding end is composed of a basic movement and an additional movement claim 1 , with the basic movement being a continuous movement along the longitudinal extent of the winding end with a fixed movement speed claim 1 , and with the additional movement being a movement which oscillates with an amplitude and an additional frequency claim 1 , wherein ...

Electrical Connection Through Motor Housing

An apparatus including a motor housing which includes a plurality of electrical connector apertures through the motor housing; a plurality of first electrical connectors which include a projecting pin section; a plurality of second electrical connectors which include a socket section configured to receive a respective projecting pin section; and a casing configured to press the first electrical connectors against respective seals at the electrical connector apertures to seal the electrical connector apertures. The first electrical connectors project through the respective seals. The projecting pin sections are located in the respective socket sections of the second electrical connectors with a press-fit therebetween to thereby connect the first and second electrical connectors. 1. An apparatus comprising:a motor housing configured to form a first environmental area inside the motor housing separated from a second environmental area outside of the motor housing, where the motor housing comprises electrical connector apertures through the motor housing;a plurality of first electrical connectors, where each of the first electrical connectors comprise a projecting pin section;a plurality of second electrical connectors, where each of the second electrical connectors comprise a socket section configured to receive the projecting pin section of a respective one of the first electrical connectors; anda casing configured to mount to the motor housing, where the casing is configured to press the first electrical connectors or the second electrical connectors against respective seals at respective ones of the electrical connector apertures to seal the electrical connector apertures, where the first electrical connectors contact the respective seals and project through the respective seals,where the projecting pin sections of the first electrical connectors are located in the socket sections of the second electrical connectors forming an interference fit therebetween to ...

METHOD FOR MANUFACTURING ROTORS

A method includes steps of: preparing first and second plates, each first plate having surrounding apertures, each aperture including a first accommodation portion and an outer necking portion, each second plate having surrounding accommodation portions; stacking the first plates by aligning necking portions to form band gaps extending linearly and parallel to each other; stacking two second plates to two opposing terminal portions of the stacked first plates; penetrating metal bars into the aligned first and second accommodation portions by exposing both ends of each metal bar; beetling the necking portions at each band gap so as to locate firmly the corresponding metal bar; positioning a first mold and a second mold to clamp the stacked plate structure; injecting metal slurries into the first and second molds and then solidifying the metal slurries to form two end rings; and, removing the first and second molds to complete a rotor structure. 1. A method for manufacturing rotors , comprising the steps of:(a) preparing a plurality of first silicon steel plates and at least two second silicon steel plates, an outer edge of each said first silicon steel plate being furnished with a plurality of apertures, each of the apertures including a first accommodation portion away from the outer edge, and further including a necking portion close to the outer edge, each of the at least two second silicon steel plates being furnished with a plurality of closed perforations, each of the closed perforations defining a second accommodation portion;(b) stacking the plurality of first silicon steel plates into a stacked first silicon steel structure by aligning corresponding necking portions of the stacked first silicon steel plates so as to have the necking portions to form a plurality of band gaps extending linearly, vertically and parallel to each other, each of the band gaps including a plurality of the necking portions;(c) stacking the at least two second silicon steel plates to ...

Integrated ball screw linear actuator

A linear actuation screw having a first end portion, a second end portion on an opposite side as the first end portion, and a sloping intermediate portion between the first end portion and second end portion. The first end portion has a threaded outer wall having a generally constant first diameter over at least a portion of its length and is configured to advance a nut or a sliding member along at least a portion of the first end portion. The second end portion has a threaded outer wall having a generally constant second diameter that is different from the first diameter and is configured to receive a motor fastening nut around it in order to secure the linear actuation screw to a motor. The sloping intermediate portion includes an outer wall that is generally smooth and continuous over at least a majority of the area of the outer wall.

MANUFACTURING METHOD OF STATOR

A method of manufacturing a stator of a rotary electric machine includes heating a stator core so as to expand the stator core. The stator core has a hollow cylindrical shape and includes slots. The method includes inserting conductor groups in the slots of the heated stator core. The conductor groups each include segment conductors. The method includes cooling the stator core where the conductor groups are inserted so as to provide an interference between each of the slots and a corresponding one of the conductor groups. 1. A method of manufacturing a stator for a rotary electric machine , the method comprising:heating a stator core so as to expand the stator core, the stator core having a hollow cylindrical shape, the stator core including slots;inserting conductor groups in the slots of the heated stator core, the conductor groups each comprising segment conductors; andcooling the stator core where the conductor groups are inserted so as to provide an interference between each of the slots and a corresponding one of the conductor groups.2. The method according to claim 1 , wherein after the cooling claim 1 , the interference is provided between each of the slots and the corresponding one of the conductor groups in at least one of a circumferential direction or a radial direction of the stator core.3. The method according to claim 1 , wherein the conductor groups each comprise the segment conductors and an insulating sheet.4. The method according to claim 2 , wherein the conductor groups each comprise the segment conductors and an insulating sheet.5. The method according to claim 1 , wherein the heating comprises heating the stator core from both of an inner peripheral surface and an outer peripheral surface of the stator core.6. The method according to claim 2 , wherein the heating comprises heating the stator core from both of an inner peripheral surface and an outer peripheral surface of the stator core.7. The method according to claim 3 , wherein the heating ...

CORE UNIT MANUFACTURING APPARATUS AND CORE UNIT MANUFACTURING METHOD

There are provided a core unit manufacturing apparatus and a core unit manufacturing method including: a molding device that fills a resin into a space portion in a core body; a resin transfer unit that transfers a resin material to the molding device to supply the resin material thereto; and a core transfer unit that carries the core body in and out of a part between a pair of dies of the molding device. The resin transfer unit and the core transfer unit are arranged such that: the resin transfer unit supplies the resin to the molding device from one side position of side surfaces of the molding device; and the core transfer unit carries the core body in and out of the molding device from the other side position of the side surfaces of the molding device, the other side position being different from one side position. 1. A core unit manufacturing apparatus for manufacturing a core unit of a stator or a rotor in a rotating electric machine , the core unit being formed by filling a resin into a space portion provided as a target for filling the resin in a core body formed by laminating a plurality of thin plates made of a magnetic metal material , the core unit manufacturing apparatus comprising:a molding device that fills the resin into the space portion in the core body;a resin transfer unit that transfers a resin material to the molding device to supply the resin material thereto; anda core transfer unit that carries the core body in and out of a part between a pair of dies of the molding device, wherein the resin transfer unit supplies the resin to the molding device from one side position of side surfaces of the molding device; and', 'the core transfer unit carries the core body in and out of the molding device from the other side position of the side surfaces of the molding device, the other side position being different from one side position., 'the resin transfer unit and the core transfer unit are arranged such that2. The core unit manufacturing apparatus ...

ELECTRIC MACHINES AND METHODS OF MAKING SAME

A method of making a stator module for use in a stator assembly of an electric machine includes temporarily supporting a plurality of stator segments in a desired orientation using a temporary support. The desired orientation of the stator segments is a relative orientation of the stator segments within the stator module. A mold is placed around the plurality of stator segments and the mold is filled with a potting material to form a stator module such that the potting material supports the stator segments in their desired orientation. The temporary support is removed. 1. A rotating electric machine comprising:a rotor assembly supported for rotation about a rotational axis, the rotor assembly including a plurality of rotor poles, the rotor poles being supported for rotation along a rotor pole circular path about the rotational axis with a desired rotor pole spacing between adjacent rotor poles; and a plurality of independently energizable stator segments, each stator segment including a magnetic core that defines a plurality of stator poles for magnetically interacting with the rotor poles, the stator segments being positioned adjacent to the rotor pole circular path such that the stator poles face the rotor pole circular path with a desired stator pole spacing between adjacent stator poles, the stator segments also being positioned adjacent to only a portion of the rotor pole circular path such that there is at least one stator pole gap between at least two stator poles that is greater than the desired stator pole spacing; and', 'at least one non-energizable termination magnetic core positioned within the stator pole gap and adjacent to one of the stator segments such that the termination core provides an additional magnetic flux return path for magnetic flux associated with the energizing of the adjacent stator segment., 'a stator assembly comprising2. The electric machine of wherein the stator assembly includes a plurality of independent stator modules with each ...

Device and Method for Manufacturing Magnet Embedded Core

To prevent the creation of unnecessary resin from the resin used for fixing the magnet, a device for manufacturing a magnet embedded core including a magnet embedded in resin filling a magnet insertion hole () extending axially in a motor core comprises a resin charging device () configured to charge the resin () in solid form into the magnet insertion hole (), a magnet insertion device () configured to insert the magnet () into the magnet insertion hole (), and a heating device () configured to heat the motor core () to melt the resin () in solid form received in the magnet insertion hole (). 1. A device for manufacturing a magnet embedded core including a magnet embedded in resin filling a magnet insertion hole extending axially in a motor core , the device comprising:a resin charging device configured to charge the resin in solid form into the magnet insertion hole;a magnet insertion device configured to insert the magnet into the magnet insertion hole; anda heating device configured to heat the motor core to melt the resin in solid form in the magnet insertion hole.2. The device for manufacturing a magnet embedded core according to claim 1 , further comprising a pressurization device configured to pressurize the molten resin in the magnet insertion hole.3. The device for manufacturing a magnet embedded core according to claim 1 , further comprising an upper die and a lower die configured to clamp the motor core between the upper die and the lower die.4. The device for manufacturing a magnet embedded core according to claim 3 , further comprising a pressurization device configured to pressurize the molten resin in the magnet insertion hole via the upper die and the lower die.5. The device for manufacturing a magnet embedded core according to claim 3 , wherein the resin charging device is configured to charge the resin into the magnet insertion hole in the motor core placed on the lower die.6. The device for manufacturing a magnet embedded core according to claim ...

Rotor for an electromagnetic motor or generator with radial flux comprising a mesh structure housing individual magnets

A rotor for a motor or for a radial flux electromagnetic generator having a cylindrical support housing a plurality of magnets (4), characterised in that the cylindrical support comprises a cylindrical mesh (5a) having mesh elements each defining a recess (5) for a respective individual magnet (4), each recess (5) having internal dimensions that are just sufficient to allow the introduction of a individual magnet (4) in its interior while leaving a space between the recess (5) and the individual magnet (4) filled by a fibre-reinforced resin, the mesh (5a) being made from a fibre-reinforced insulating material, the rotor comprising a non-conductive composite layer coating the individual magnets (4) and the mesh (5a).

ACTUATOR

An actuator is provided which comprises an actuator housing having an inside surface defining a stator-receiving portion and a stator. The stator-receiving portion comprises a rotor support element, and plurality of guide projections which are spaced-apart about the rotor support element, the plurality of stator-abutment projections being integrally formed with the inside surface. The stator has a plurality of locator recesses which are engagable with the plurality of stator-abutment projections when the stator is received at the stator-receiving portion of the actuator housing to locate the stator relative to the actuator housing. 1. An actuator comprising:an actuator housing having an inside surface defining a stator-receiving portion, the stator-receiving portion comprising a rotor support element, and plurality of stator-abutment projections which are spaced-apart about the rotor support element, the plurality of stator-abutment projections being integrally formed with the inside surface; anda stator having a plurality of locator recesses which are abuttably engagable with the plurality of stator-abutment projections when the stator is received at the stator-receiving portion of the actuator housing to locate the stator relative to the actuator housing.2. The actuator as claimed in claim 1 , wherein each said stator-abutment projection comprises a central support and a locator head extending laterally from the central support.3. The actuator as claimed in claim 2 , wherein each of the locator heads is oriented towards the rotor support element.4. The actuator as claimed in claim 3 , wherein a rotor-facing surface of each locator head contacts a rotor-proximate inner surface of the locator recess when the stator is received at the stator-receiving portion.5. The actuator as claimed in claim 2 , wherein each locator head has an arcuate or substantially arcuate or trapezoidal profile.6. The actuator as claimed in claim 2 , wherein each locator recess of the stator ...

METHOD FOR MANUFACTURING LAMINATED CORE

A method for manufacturing a laminated core, in which while a laminated core body formed by caulking and with permanent magnets inserted in a plurality of magnet insertion holes is held between a resin injection die and a receiving die opposed to each other, resin is injected into the magnet insertion holes from resin reservoir portions provided to the resin injection die to fix the permanent magnets , the method comprising: at a time of resin injection, pressing a flat press surface of the resin injection die against caulking portions protruding from a surface of the laminated core body to apply pressure thereto, thereby allowing the surface of the laminated core body whereon the caulking portions are formed to be pressed against the flat press surface so as to prevent resin leakage. 1. A method for manufacturing a laminated core , in which while a laminated core body formed by caulking and laminating a plurality of core sheets and provided at a center thereof with a circular hole around which a plurality of magnet insertion holes in which permanent magnets are inserted are arranged is held between a resin injection die and a receiving die opposed to each other , resin is injected into the magnet insertion holes from resin reservoir portions provided to the resin injection die to fix the permanent magnets , each of the core sheets having a warp with a height difference of 10 μm or less and being provided with a plurality of caulking portions spaced equally or equally in each group in a circumferential direction thereof , the method comprising:making the caulking portions to protrude from a surface of the laminated core body in a range of 10 to 80% of a plate thickness of the core sheet; andat a time of injecting the resin, pressing a flat press surface of the resin injection die against the caulking portions protruding from the surface of the laminated core body to apply pressure thereto, thereby making a gap between the flat press surface and the surface of the ...

Electric Motor and Process for Making an Electric Motor

An electric motor includes a stationary stator and a rotating rotor. To assemble the rotor, a grease is applied to at least a portion of the shaft of the rotor proximate a rotor core disposed on the shaft. A liquid varnish is applied to the rotor core and allowed to harden. The grease can be removed from the shaft along with any varnish that had hardened thereon. Later, the same grease can be reapplied to the shaft to facilitate installation of a bearing onto the shaft. The process can apply to the assembly of new electric motors or to the remanufacturing of previously constructed motors. 1. A method of manufacturing a rotor for an electric motor , the method comprising:providing a partly assembled rotor including a shaft having an elongated rod-like shape extending between a first end and a second end defining a shaft axis and a rotor core disposed around a portion of the shaft and radially protruding from the shaft, the rotor core having a forward face terminating before the first end to provide an exposed shaft length;applying grease about at least a portion of the exposed shaft length proximate the forward face of the rotor core;supporting the partly assembled rotor in a mold;applying varnish to the rotor core of the partly assembled rotor in the mold and allowing the varnish to harden; andremoving the grease and any deposited varnish thereon from the exposed shaft length.2. The method of claim 1 , further comprising reapplying the grease to at least a portion of the exposed shaft length.3. The method of claim 2 , further comprising pressing a bearing over the exposed shaft length.4. The method of claim 3 , further comprising a step of heating the partly assembled rotor in the mold.5. The method of claim 4 , wherein the step of applying varnish is accomplished by a varnishing machine configured with a nozzle for introduction of the varnish to the mold.6. The method of claim 5 , wherein the step of removing the grease is accomplished by hand with a wire brush.7. ...

Direct drive rotor with metal coupler

A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler.

Apparatus and method for injecting resin into laminated iron core

An apparatus includes a mold unit and a receive unit which clamp a laminated iron core body from both sides in a lamination direction, the laminated iron core body including a plurality of laminated iron core pieces and a resin hole pierced in the lamination direction, a plunger which extrudes a resin of an inside of a resin pool part formed in the mold unit, and a cull plate arranged between the laminated iron core body and the mold unit. The cull plate includes a close contact part with the resin on a side opposed to the plunger, the close contact part including a projection projected to a side of the plunger beyond a groove bottom of a runner formed in the cull plate, or a recess recessed to a side of the laminated iron core body beyond the groove bottom of the runner.

Method and Device for Dispensing Sealing Compound, and Housing for an Electric Machine

In a method for connecting a housing cover to a cup-shaped housing structure for an electric machine, and a cup-shaped housing structure produced by means of the method, the cup-shaped housing structure has an opening and has an opening edge surrounding the opening. The housing cover is of cup-shaped form, wherein a collar of uninterrupted encircling form is integrally formed on a cup-shaped structure wall in the region of an opening edge, which collar points radially outward. In a first method step, the housing cover is at least partially inserted into the housing opening such that a channel is formed by mutually opposite regions of the housing cover wall and of the cup-shaped housing structure wall. In a further step, the channel is at least partially or completely filled with a sealing compound, which is in particular of elastic form, or an adhesive. 1. A method for connecting a housing cover to a housing cup for an electric machine , the housing cup defining an opening and having an opening edge surrounding the opening , the housing cover having a cup shape , and a collar of uninterrupted encircling form is integrally formed on a cup wall of the housing cover in a region of the opening edge , the collar projecting radially outwardly , the method comprising:at least partially inserting the housing cover into the housing opening such that a channel is formed by mutually opposite regions of a housing cover wall and a housing cup wall; andat least partially filling the channel with a sealing compound.2. The method as claimed in claim 1 , wherein the at least partial filling of the channel with the sealing compound comprises inserting a dispensing device into the channel claim 1 , which causes the sealing compound to flow into the channel.3. The method as claimed in claim 2 , wherein the dispensing device includes a dispensing pipe claim 2 , and the at least partial filling of the channel further comprises:circumferentially guiding the dispensing pipe around the ...

Insulation System For An Electrical Machine

The present disclosure relates to insulation systems. The teachings thereof may be embodied in an insulation system for an electrical machine. For example, an insulation system may comprise: solid insulation materials; an impregnating resin having oxirane functionalities; a depot accelerator distributed throughout the solid insulation materials; and a catalyst for initiating hardening of the impregnating resin, wherein the catalyst is at least partly in gaseous form under hardening conditions. 1. An insulation system , comprising:solid insulation materials;an impregnating resin having oxirane functionalities;a depot accelerator distributed throughout the solid insulation materials; anda catalyst for initiating hardening of the impregnating resin, wherein the catalyst is at least partly in gaseous form under hardening conditions.2. The insulation system as claimed in claim 1 , wherein a hardening mechanism of the impregnating resin includes an ionic polymerization.3. The insulation system as claimed in claim 1 , wherein the catalyst comprises an alkylimidazole.4. The insulation system as claimed in claim 1 , wherein the catalyst comprises a 1 claim 1 ,2-dialkylimidazole.5. The insulation system as claimed in claim 1 , wherein the catalyst comprises a mixture of constituents chosen from the group consisting of alkylimidazoles and arylimidazoles.6. The insulation system as claimed in claim 1 , wherein the catalyst comprises a mixture of 1 claim 1 ,2-dialkylimidazoles.7. The insulation system as claimed in claim 1 , further comprising an additive or filler added to the impregnating resin.8. The insulation system as claimed in claim 1 , further comprising a reactive diluent added to the impregnating resin.9. The insulation system as claimed in claim 1 , wherein the gaseous catalyst is chemisorbable at the surface of the impregnating resin.10. The insulation system as claimed in claim 1 , wherein the gaseous catalyst is present bound to a carrier material or an adsorbent. ...

NANOSTRUCTURED INSULATION FOR ELECTRIC MACHINES

An insulating composition comprising a polymer resin, a nanoclay, and one or more nanofillers. The insulating composition has a thermal conductivity of greater than about 0.8 W/mK, a dielectric constant of less than about 5, a dissipation factor of less than about 3%, and a breakdown strength of greater than about 1,000V/mil. The insulating composition has an endurance life of at least 400 hours at 310 volts per mil. 1. An insulating composition comprising:a) a polymer resin;b) a nanoclay; andc) one or more nanofillers,wherein the insulating composition has a dielectric constant of less than about 5, a dissipation factor of less than about 3%, and a breakdown strength of greater than about 1,000V/mil, andwherein the insulating composition has an endurance life of at least 400 hours at 310 volts per mil.2. The insulating composition of claim 1 , wherein the polymer resin is selected from the group consisting of: epoxy resin claim 1 , silicone rubber claim 1 , polyester resin claim 1 , polyimides claim 1 , polyamide-imides claim 1 , polyetherimides claim 1 , polysulfones claim 1 , polyether ether keton claim 1 , polycarbonates claim 1 , and polyamide-imides.3. The insulating composition of claim 1 , wherein the nanoclay is selected from the group consisting of: montmorillonite claim 1 , kaolin claim 1 , and talc.4. The insulating composition of claim 1 , wherein the one or more nanofillers is selected from the group consisting of: boron nitride claim 1 , zinc oxide claim 1 , and a combination of boron nitride and zinc oxide.5. The insulating composition of claim 1 , wherein the composition comprises about 60% to about 70% polymer resin by weight.6. The insulating composition of claim 1 , wherein the composition comprises about 60% to about 70% polymer resin claim 1 , about 20% to about 30% nanoclay claim 1 , about 5% to about 20% boron nitride claim 1 , and about 0% to about 15% zinc oxide by weight.7. The insulating composition of claim 1 , wherein the insulating ...

MOTOR STATOR STRUCTURE AND STATOR ASSEMBLY

A stator assembly includes a stator core, an insulated wire frame, a coil, and an annular insulation structure. The stator core includes a magnetic yoke portion and a radial tooth portion, and the radial tooth portion extends from the magnetic yoke portion. The insulated wire frame disposed outside the radial tooth portion of the stator core has a winding slot. The coil is wound in the winding slot of the insulated wire frame annularly. The annular insulation structure is formed by injection moulding and wraps an area where the coil is exposed out of the insulated wire frame, and the coil is packaged between the insulated wire frame and the annular insulation structure. 1. A stator assembly , comprising:a stator core, comprising a magnetic yoke portion and a radial tooth portion, wherein the radial tooth portion extends from the magnetic yoke portion; andan insulated wire frame, disposed outside the radial tooth portion of the stator core, and having a winding slot;a coil, wound in the winding slot of the insulated wire frame annularly; andan annular insulation structure, formed by means of injection moulding, and wrapping an area where the coil is exposed out of the insulated wire frame, so that the coil is packaged between the insulated wire frame and the annular insulation structure.2. The stator assembly according to claim 1 , wherein the insulated wire frame is formed by means of insert molding and surrounds the radial tooth portion claim 1 , and the annular insulation structure wraps the coil.3. The stator assembly according to claim 1 , wherein the radial tooth portion comprises a first end and a second end in an axial direction claim 1 , and the insulated wire frame comprises a first U-shaped frame sleeved on the first end of the radial tooth portion and a second U-shaped frame sleeved on the second end of the radial tooth portion.4. The stator assembly according to claim 3 , wherein two gaps are formed between the first U-shaped frame claim 3 , the second U ...

MOTOR AND PUMP APPARATUS

A motor may include a rotor; a stator disposed on an outer peripheral side of the rotor; and a resin sealing member covering the stator. The stator may include a stator core; a coil wound around the stator core; and a connector disposed on an outer peripheral side of the stator core. The resin sealing member may include a connector sealing part protruding to the outer peripheral side of the stator core and covering the connector. The connector may include a connection opening through which an external connector is attached and detached, and the connection opening protrudes in an axial direction of the rotor from the connector sealing part and is opened in the direction of the axis. 1. A motor comprising:a rotor;a stator disposed on an outer peripheral side of the rotor; anda resin sealing member covering the stator, wherein a stator core;', 'a coil wound around the stator core; and', 'a connector disposed on an outer peripheral side of the stator core;, 'the stator comprisesthe resin sealing member comprises a connector sealing part protruding to the outer peripheral side of the stator core and covering the connector; andthe connector comprises a connection opening through which an external connector is attached and detached, and the connection opening protrudes in an axial direction of the rotor from the connector sealing part and is opened in the direction of the axis.2. The motor according to claim 1 , whereinthe resin sealing member comprises a sealing member bottom part covering the stator core and the coil from an axial direction side,the connector sealing part protrudes to a first side in the axial direction from the sealing member bottom part, anda height, in the axial direction, of the connection opening from the sealing member bottom part is larger than a height of protrusion of the connector sealing part from the sealing member bottom part.3. The motor according to claim 1 , comprising a cover member disposed on a first side of the resin sealing member in ...

PUMP HAVING AN ELECTRIC MOTOR

The invention relates to a pump () having an electric motor (), more particularly for a motor vehicle, for pumping a fluid, comprising an impeller () that has pumping elements () and can carry out a rotary movement about an axis of rotation (); a working chamber around the impeller (); an electric motor with a stator () and a rotor (), the rotor () being provided with permanent magnets (); and preferably a housing (); the rotor () and the permanent magnets () being produced by sintering, and the permanent magnets () on the rotor () being integrally bonded to the rotor () by sintering. 154. A pump () with electric motor () , for delivering a fluid , comprising{'b': 18', '19', '27, 'an impeller () having delivery elements (), which impeller is rotatable about an axis of rotation (),'}{'b': 47', '18, 'a working chamber () provided at the impeller (),'}{'b': 4', '13', '16', '16', '17, 'an electric motor () with a stator () and a rotor (), wherein the rotor () is equipped with permanent magnets (), and'}{'b': '8', 'a housing (), wherein'}{'b': 16', '17', '17', '16', '16, 'the rotor () and the permanent magnets () are produced by sintering, and the permanent magnets () are connected to the rotor () by a cohesive sintered connection to the rotor ().'}2. The pump with electric motor as claimed in claim 1 ,characterized in that{'b': 17', '48', '16, 'the permanent magnets () are arranged in recesses () of the rotor ().'}3. The pump with electric motor as claimed in claim 1 ,characterized in that{'b': 5', '4', '16', '18, 'the pump () is integrated into the electric motor () by virtue of the rotor () being formed by the impeller ().'}4. The pump with electric motor as claimed in claim 1 ,characterized in that{'b': 5', '6, 'the pump () is in the form of an internal-gear pump ().'}516174. A method for producing a rotor () with permanent magnets () for an electric motor () claim 1 , having the steps:{'b': 51', '16, 'molding a green product () for the rotor () from a sintering ...

METHOD OF ENCAPSULATING INDUCTION MOTOR STATOR

An induction motor stator encapsulate method, including arranging a stator of an induction motor in a case of the induction motor, wherein the stator comprises a stator core and a stator winding surrounding the stator core; filling a first encapsulating material into the case for forming a first insulation layer, wherein the first insulation layer directly covers the stator winding; and filling a second encapsulating material into the case for forming a second insulation layer, wherein the second insulation layer covers the first insulation layer; wherein a shrink rate of the first encapsulating material is smaller than a shrink rate of the second encapsulating material. 1. An induction motor stator encapsulate method , comprising:arranging a stator of an induction motor in a case of the induction motor, wherein the stator comprises a stator core and a stator winding surrounding the stator core;filling a first encapsulating material into the case for forming a first insulation layer, wherein the first insulation layer directly covers the stator winding; andfilling a second encapsulating material into the case for forming a second insulation layer, wherein the second insulation layer covers the first insulation layer;wherein a shrink rate of the first encapsulating material is smaller than a shrink rate of the second encapsulating material.2. The induction motor stator encapsulate method of claim 1 , wherein the first encapsulating material is silicon.3. The induction motor stator encapsulate method of claim 2 , wherein the second encapsulating material is epoxy resin.4. The induction motor stator encapsulate method of claim 3 , wherein a volume of the first encapsulating material filled in the case is greater than a volume of the second encapsulating material filled in the case.5. The induction motor stator encapsulate method of claim 1 , further comprising:arranging the stator and the case in a sealed container; andvacuum pumping the sealed container.6. An ...

SEGMENTED STATOR FOR A DIRECT DRIVE ELECTRICAL GENERATOR

A method of manufacturing a segment for a stator of an electrical generator includes manufacturing a segment body circumferentially extending between at least a first end slot and a second end slot, providing the coil concentrated winding in the slots of the segment body, providing a first pressure plate a second pressure plate for respectively holding the coil in the first end slot and the second end slot, applying vacuum pressure impregnation to the coil concentrated winding in the slots of the segment body, and removing the first pressure plate and the second pressure plate for obtaining the segment. 1. A method of manufacturing a stator segment for a stator of an electrical generator , the stator segment including a segment body and a coil concentrated winding , the method including:manufacturing a segment body circumferentially extending between at least a first end slot and a second end slot, each of the first end slot and of the second end slot being circumferentially extended between at least a tooth of the segment body and a respective first side opening and a second side opening, the segment body circumferentially spanning between the first side opening and the second side opening;providing the coil concentrated winding in slots of the segment body;providing a first pressure plate at the first side opening and a second pressure plate at the second side opening for respectively holding the coil concentrated winding in the first end slot and the second end slot;applying vacuum pressure impregnation to the coil concentrated winding in the slots of the segment body; andremoving the first pressure plate and the second pressure plate for obtaining the stator segment.2. The method of manufacturing the stator segment as claimed in claim 1 , further comprising between the third step and the fourth step:providing at least a phase separator between the first pressure plate or the second pressure plate and the coil concentrated winding in the first end slot or the ...

CORE AND COIL MOLDING STRUCTURE AND MANUFACTURING METHOD THEREOF

Provided are a core and coil molding structure and a manufacturing method thereof which are capable of eliminating a void between coil layers to prevent foreign materials from entering therein, and which improve the vibration resistance and shock resistance of a reactor. A core and coil molding structure includes a coil that is a rectangular coil, a core yoke member in a block shape, and a resin member molding at least a part of those. The presence of a positioning member in a pin shape which positions the coil within a mold forms a groove in the inner circumference of the coil in the resin member. 1. A core and coil molding structure comprising:a core;a coil; anda resin member molding at least a part of the core and the coil, wherein:a groove is formed in the resin member molded on an inner circumference of the coil.2. The core and coil molding structure according to claim 1 , wherein the groove is formed in parallel with an axial direction of the coil.3. The core and coil molding structure according to claim 1 , wherein the core is a core yoke component disposed so as to face an end portion of the coil.4. The core and coil molding structure according to claim 3 , wherein the groove is tapered toward the core yoke component.5. The core and coil molding structure according to claim 1 , wherein:the coil is a rectangular coil; andat least the one groove is formed in each side of the inner circumference of the rectangular coil.6. The core and coil molding structure according to claim 1 , wherein the groove has a semicircular cross-section.7. The core and coil molding structure according to claim 1 , wherein a thermal conductivity of the resin member is equal to or higher than 0.5 W/m·k.8. A method of manufacturing a core and coil molding structure comprising:a core holding step of holding a core in a mold;a coil holding step of holding a coil in the mold; anda resin molding step of integrally molding the core and the coil held by the mold by filling a resin member to ...

ROTOR FOR MOTOR, AND MANUFACTURING METHOD FOR MOTOR AND ROTOR FOR MOTOR

Provided is a motor rotor having a magnet attachment structure that can be used in a severe environment, for example. A motor rotor comprises: a rotary shaft; an annular magnetic body; a metal member; and an annular magnet that surrounds the magnetic body. The magnetic body has two surfaces that face each other in the rotary shaft direction, and a protruding part that protrudes from one surface of the two surfaces in the rotary shaft direction. The protruding part surrounds the rotary shaft. The magnet has two surfaces that face each other in the rotary shaft direction. The metal member is disposed on one surface of the magnet. The metal member surrounds the protruding part. The metal member is interposed between the protruding part and the one surface of the magnetic body. 1. A rotor for a motor comprising:a rotational shaft;an annular magnetic body having two surfaces opposing in a rotational shaft direction and a protruding portion protruding in the rotational shaft direction from one surface of the two surfaces and an outer peripheral surface;a metallic member surrounding the protruding portion; andan annular magnet surrounding the magnetic body, whereinthe protruding portion surrounds the rotational shaft,the magnet is provided with two surfaces opposing in the rotational shaft direction,the metallic member is disposed at one surface of the magnet, andthe metallic member is interposed between the protruding portion and one surface of the magnetic body,a curved portion and a planar portion are arranged at the outer peripheral surface of the annular magnetic body, andan adhesive is arranged at a space formed between the planar portion and an inner peripheral surface of the magnet.2. The rotor for a motor according to claim 1 , whereinthe two surfaces of the magnetic body correspond respectively to an upper surface and a lower surface,the two surfaces of the magnet correspond respectively to an upper surface and a lower surface, anda position of the magnet with ...

DEVICE FOR THE TRICKLE IMPREGNATION OF A STATOR OR ARMATURE OF AN ELECTRIC MACHINE

The invention relates to an impregnation device () for trickle impregnation of a stator () or armature of an electric machine with a synthetic resin () curing under temperature increase, comprising a holding device () which can be tilted vertically relative to the horizontal () and to which a drive motor () is attached as a rotary drive for the stator () or the armature, a drive shaft () operatively connected to the drive motor (), a clamping device () which is non-rotatably connected to the drive shaft () and capable of detachably connecting the stator () or the armature to the drive shaft (), a trickle device () capable of applying a synthetic resin () onto at least one axial end of the windings () of the stator () or the armature, and a heating device capable of heating the windings () of the stator () or the armature to a trickle temperature and to a comparatively higher curing temperature. The heating device according to the invention comprises an electromagnetic inductor () which is arranged coaxially or axially parallel to the stator () or the armature. The invention also relates to a production plant () for the trickle impregnation of a stator () or armature, in which this impregnation device () is integrated. 119-. (canceled)20. An impregnation device for trickle impregnation of a stator or armature of an electric machine with a synthetic resin curing under temperature increase , comprising:a holding device which can be tilted vertically with respect to the horizontal, and to which a drive motor is attached as a rotary drive for the stator or the armature;a drive shaft operatively connected to the drive motor;a clamping device which is non-rotatably connected to the drive shaft and capable of detachably connecting the stator or the armature to the drive shaft;a trickle device capable of applying a synthetic resin onto at least one axial end of windings of the stator or the armature; anda heating device capable of heating the windings of the stator or the ...

METHOD FOR TRICKLE IMPREGNATION OF THE STATOR OR ARMATURE OF AN ELECTRIC MACHINE

The invention relates to a method for trickle impregnation of a stator () or armature of an electric machine with a synthetic resin () curing under temperature increase, comprising the following steps: 116-. (canceled)17. A method for trickle impregnation of a stator or armature of an electric machine with a synthetic resin curing under temperature increase , comprising:{'b': 1', '2', '3', '0', '1, 'a) heating the stator or the armature from an initial temperature (T) to a trickle temperature range (T-T) of the synthetic resin, which is initially still liquid, in a first period of time (t-t);'}{'b': 2', '3', '1', '2, 'b) keeping constant the temperature in the trickle temperature range (T-T) and introducing the synthetic resin, which is still liquid, into the stator or the armature in a second period of time (t-t);'}{'b': 4', '5', '2', '3, 'c) heating the stator or the armature to a curing temperature range (T-T) in a third period of time (t-t);'}{'b': 4', '5', '3', '4, 'd) keeping constant the temperature of the stator or the armature in the curing temperature range (T, T) in a fourth period of time (t-t) and setting and curing the synthetic resin to a duroplast; and'}{'b': 3', '4, '(e) cooling down the stator or the armature after the end of the fourth period of time (t-t),'}wherein the stator or the armature is disposed in an impregnation device during the introduction of the liquid synthetic resin,{'b': 2', '3', '4', '5, 'wherein the trickle temperature range (T-T) has lower temperatures than the curing temperature range (T-T), and'}wherein the heating of the stator or the armature is performed inductively.18. The method according to claim 17 , wherein the heating of all electrically conductive components of the stator or the armature is carried out by means of electric eddy currents which are generated by a high-frequency alternating magnetic field of an electromagnetic inductor which embraces the stator or the armature radially on the outside like a ring or ...

Electrical conductors and related devices

A method of spacing a plurality of electrical conductors for carrying electrical current in an electrical machine may include positioning between the electrical conductors an uncured spacer body. The uncured spacer body may include a curable material, and an activatable heat generating material mixed with the curable material. The method may further include activating the activatable heat generating material to heat the curable material to form a cured spacer to thereby space the electrical conductors in the electrical machine.

COIL PART

A coil part includes two coils, two first molded bodies, and a second molded body. The two first molded bodies serving as electrical insulation individually cover the two coils. The second molded body serving as electrical insulation integrally covers the two first molded bodies. The second molded body has a modulus of elasticity lower than a modulus of elasticity of each of the two first molded bodies. 1. A coil part , comprising:two coils;two first molded bodies serving as electrical insulation individually covering the two coils; anda second molded body serving as electrical insulation integrally covering the two first molded bodies,the second molded body having a modulus of elasticity lower than a modulus of elasticity of each of the two first molded bodies.2. The coil part according to claim 1 , whereineach of the two first molded bodies has a thermal conductivity higher than a thermal conductivity of the second molded body.3. The coil part according to claim 1 , whereineach of the two first molded bodies and the second molded body contains a resin and a filler having a higher thermal conductivity than the resin, anda filler content of each of the two first molded bodies is higher than a filler content of the second molded body.4. The coil part according to claim 1 , whereineach of the two first molded bodies has specific gravity higher than specific gravity of the second molded body.5. The coil part according to claim 1 , further comprising:a first magnetic member magnetically connectable to the two coils; anda second magnetic member magnetically connectable to the two coils, wherein a first insertion hole which is formed on one side in an axial direction of a corresponding one of the two coils and into which a part of the first magnetic member is inserted,', 'a second insertion hole which is formed on the other side in the axial direction of the corresponding one of the two coils and into which a part of the second magnetic member is inserted, and', 'a ...

SYSTEM AND METHOD FOR MANUFACTURING STATOR ASSEMBLY

A system is provided for manufacturing a stator assembly having a stator core including a plurality of slots along a circumference of the stator core and a plurality of hairpins inserted into the slots, where the system may include, an epoxy coating stage disposed forward along a travel direction of the stator assembly, and configured to coat the epoxy on end portions of leg portions of the hairpins, and a varnish impregnation stage disposed at a rear of the epoxy coating stage along the travel direction of the stator assembly, and configured to impregnate varnish into external surfaces of the plurality of hairpins and also into an interior of the slot by flowing on the plurality of hairpins. 1. A system for manufacturing a stator assembly having a stator core including a plurality of slots along a circumference of the stator core and a plurality of hairpins inserted into the plurality of slots , the system comprising:an epoxy coating stage disposed forward along a travel direction of the stator assembly, and configured to coat epoxy on end portions of leg portions of the plurality of hairpins; anda varnish impregnation stage disposed at a rear of the epoxy coating stage along the travel direction of the stator assembly, and configured to impregnate varnish into external surfaces of the plurality of hairpins and also into an interior of the plurality of slots by flowing the vanish on the plurality of hairpins.2. The system of claim 1 , wherein the epoxy coating stage includes:a first preheating device configured to preheat the stator assembly;an epoxy immersion device disposed at a rear of the first preheating device along the travel direction of the stator assembly, and configured to coat the epoxy on a preset range of the end portions of the leg portions of the plurality of hairpins by positioning the stator assembly so that the leg portions of the plurality of hairpins face downward; andan epoxy coagulation device disposed at a rear of the epoxy immersion device ...

Electric machine with device for forcibly demagnetising permanent magnets

The present invention relates to an electric machine for an aircraft, comprising a stator and a rotor that is rotationally mobile with respect to the stator, the rotor or the stator comprising a plurality of permanent magnets, the machine comprising a device for demagnetising a permanent magnet, suitable for achieving a temporary increase in the temperature of the permanent magnet, in order to limit, during the temporary increase in temperature, an exciting magnetic flux generated by the permanent magnet. The present invention furthermore relates to an assembly comprising an assembly comprising such an electric machine and a hot-fluid source suitable for delivering hot fluid to the demagnetising device of the electric machine. The hot-fluid source may be a gas stream of a turbine engine.

HIGH-SPEED ELECTRIC MOTOR

This electric motor comprises a stator () and a rotor () able to turn at a rate of rotation of greater than 8000 revolutions per minute, said rotor () comprises a magnetic body () carried by a rotation shaft (), the magnetic body () delimiting an external lateral surface (). The motor comprises a protective cladding () on the exterior lateral surface () of the magnetic body (). 1. An electric motor , comprising:a stator;a rotor capable of rotating at speeds in excess of 8000 rpm, the rotor comprising a magnetic body, carried by a rotating shaft, wherein the magnetic body defines an outer lateral surface; anda protective coating on the outer lateral surface of the magnetic body, wherein the thickness of the protective coating is between 0.1 mm and 2 mm.2. The electric motor according to claim 1 , wherein the protective coating is formed from polyether ether ketone (PEEK).3. The electric motor according to claim 1 , wherein the protective coating comprises between 5% and 25% polyether ether ketone (PEEK).4. The electric motor according to claim 1 , wherein the magnetic body comprises a stack of plates wherein sides of the stack of plates combine to form the outer lateral surface claim 1 , and the protective coating covers the sides.5. The electric motor according to claim 1 , further comprising an intermediate nickel alloy between the outer lateral surface of the magnetic body and the protective coating.6. The electric motor according to claim 1 , wherein the rotor further comprises bars connected by end rings arranged axially on both sides of the magnetic body claim 1 , and the protective coating covers the end rings.7. The electric motor according to claim 1 , wherein the protective coating consists of SKIDCOAT.8. The electric motor according to claim 1 , wherein a surface of the protective coating is mechanically ground.9. A process of manufacturing an electric motor claim 1 , the electric motor including a stator claim 1 , a rotor capable of rotating at speeds in ...

Insulated Winding Wire With Conformal Coatings

Insulated winding wires, winding wire articles, and associated formation methods are described. An insulated winding wire may include a conductor and insulation formed around the conductor. In certain embodiments, the insulation may include a first layer including a first parylene material and a second layer including a second parylene material different from the first parylene material. In other embodiments, the insulation may include one or more layers containing parylene formed over base insulation. 1. An insulated winding wire comprising:a conductor; and a first layer comprising a first parylene material; and', 'a second layer comprising a second parylene material different from the first parylene material., 'insulation formed around the conductor, the insulation comprising2. The insulated winding wire of claim 1 , wherein the first parylene material comprises one of (i) parylene N claim 1 , (ii) parylene C claim 1 , (iii) parylene D claim 1 , (iv) parylene HT claim 1 , (v) parylene AF-4 claim 1 , (vi) parylene F claim 1 , (vii) parylene A claim 1 , (viii) parylene AM claim 1 , (ix) parylene H claim 1 , (x) parylene SR claim 1 , (xi) parylene HR claim 1 , (xii) parylene NR claim 1 , (xiii) parylene CF claim 1 , or (xiv) parylene SF.3. The insulated winding wire of claim 1 , wherein the second parylene material comprises one of (i) parylene N claim 1 , (ii) parylene C claim 1 , (iii) parylene D claim 1 , (iv) parylene HT claim 1 , (v) parylene AF-4 claim 1 , (vi) parylene F claim 1 , (vii) parylene A claim 1 , (viii) parylene AM claim 1 , (ix) parylene H claim 1 , (x) parylene SR claim 1 , (xi) parylene HR claim 1 , (xii) parylene NR claim 1 , (xiii) parylene CF claim 1 , or (xiv) parylene SF.4. The insulated winding wire of claim 1 , wherein the first parylene material comprises at least one of parylene N or parylene C and the second parylene material comprises at least one of parylene HT claim 1 , parylene AF-4 claim 1 , or parylene F.5. The insulated winding ...

BRUSHED MOTOR FOR VEHICLE AND METHOD FOR MANUFACTURING THE SAME

A brushed motor includes a shaft inserted in a cylindrical stator, a rotor including a core provided on an outer circumference of the shaft to face the stator and a coil having a distributed winding structure wound around teeth of the core, a commutator provided on one end of the shaft, and electrically connected with the coil by a wire drawn from coil end parts of the coil, a resin molded part covering the coil end parts and a hooking portions for the wire of the commutator, and a brush in contact with an outer circumference of the commutator. A width of a gap between the resin molded part and the brush is set to a value larger than a scattering distance of a spark generated between the commutator and the brush. 1. A brushed motor for a vehicle , the brushed motor comprising:a shaft inserted in a stator having a cylindrical shape;a rotor including a core provided on an outer circumference of the shaft to face the stator, and a coil having a distributed winding structure wound around teeth of the core;a commutator provided on one end of the shaft, and electrically connected with the coil by a wire drawn from coil end parts of the coil;a resin molded part covering the coil end parts and a hooking portion for the wire of the commutator; anda brush being in contact with an outer circumference of the commutator,wherein a width of a gap between the resin molded part and the brush is set to a value larger than a scattering distance of a spark generated between the commutator and the brush.2. The brushed motor for the vehicle according to claim 1 , wherein the resin molded part includes a first portion covering the hooking portion and one of the coil end parts of the coil claim 1 , a second portion covering another of the coil end parts of the coil claim 1 , and a third portion filling spaces between the teeth adjacent to each other and connected with the first portion and the second portion.3. The brushed motor for a vehicle according to claim 2 , wherein an outer ...

Wrapping-Tape Insulating System for Electrical Machines, Use Therefor, and Electrical Machine

A wrapping tape insulation system is provided which includes an insulating tape preferably produced by vacuum pressure impregnation. The provided tape comprises a tape adhesive, a tape accelerator and a resin wherein the tape accelerator may comprise an imidazole covalently bonded via the amino function to an acrylate by aza-Michael addition.

ROTOR, MOTOR, AIR CONDITIONING APPARATUS, AND MANUFACTURING METHOD OF ROTOR

A rotor has a shaft, a rotor core, and a position detection magnet. The rotor core is formed of electromagnetic steel sheets and has an annular shape about the shaft. The position detection magnet has an annular shape about the shaft and is attached to one side of the rotor core in an axial direction of the shaft. The position detection magnet has a first end surface facing the rotor core and a second end surface opposite to the first end surface. The position detection magnet has a tapered part at an inner periphery thereof, and the tapered part is inclined so that a distance from the shaft is maximum at the second end surface. 1. A rotor comprising:a shaft;a rotor core formed of electromagnetic steel sheets and having an annular shape about the shaft; anda position detection magnet having an annular shape about the shaft and attached to one side of the rotor core in an axial direction of the shaft; anda resin part integrally holding the rotor core, the shaft, and the position detection magnet,wherein the position detection magnet has a first end surface facing the rotor core and a second end surface opposite to the first end surface, andwherein the position detection magnet has a tapered part at an inner periphery thereof, the tapered part being inclined so that a distance from the shaft is maximum at the second end surface.2. The rotor according to claim 1 , wherein the position detection magnet has a part where a distance from the shaft is uniform in the axial direction claim 1 , and the part is located at a side closer to the rotor core with respect to the tapered part.4. The rotor according to claim 3 , wherein the position detection magnet has a first projection projecting toward the rotor core claim 3 , andwherein the rotor core has a hole with which the first projection is engaged.5. The rotor according to claim 4 , wherein the first projection extends in an arc shape about the shaft.6. The rotor according to claim 1 , further comprising a rotor magnet ...

ROTOR CORE AND MANUFACTURING METHOD FOR ROTOR CORE

A rotor core includes a laminated iron core in which an electrical steel sheets are laminated, a magnet slot being provided in the laminated iron core and extending in a lamination direction of the laminated iron core, and a magnet that is fixed to an inside of the magnet slot through resin. The resin includes a filler, and the filler has a length in a longitudinal direction larger than a length in a width direction. The filler is oriented such that the longitudinal direction is directed towards a surface of the magnet. 1. A rotor core comprising:a laminated iron core in which an electrical steel sheets are laminated, the laminated iron core providing a magnet slot that extends in a lamination direction of the laminated iron core; anda magnet that is fixed to an inside of a magnet slot through resin,the resin including a filler, and the filler having a length in a longitudinal direction larger than a length in a width direction, the filler being oriented such that the longitudinal direction is directed towards a surface of the magnet.2. The rotor core according to claim 1 , whereinthe filler is a non-magnetic body.3. A manufacturing method for a rotor core claim 1 ,the rotor core including a laminated iron core in which an electrical steel sheets are laminated, the laminated iron core providing a magnet slot that extends in a lamination direction of the laminated iron core, and a magnet that is fixed to an inside of the magnet slot through filler resin, the filler resin including a filler, kneading step that kneads the filler and a resin material, the filler having a length in a longitudinal direction larger than a length in a width direction;', 'forming step that forms a sheet by shaping a kneaded matter made of the filler and the resin material into a flat plate shape and drying the shaped kneaded matter;', 'lamination step that makes a laminate by laminating the sheet;', 'pressing step that makes the filler resin by pressing the laminate in a lamination direction ...

Rotor for a Rotating Electric Machine and Electric Motor

A rotor for a rotating electrical machine may include a number of pole teeth which carry a field winding, slots formed between the pole teeth, slot wedges provided in the slots, and separators arranged in the slots, the separators extending, starting from the slot wedges, between the windings in a direction toward a slot base. 1. A rotor for a rotating electric machine , the rotor comprising:a plurality of pole teeth, each carrying a field winding;a slot formed between each pair of adjacent pole teeth, such that for each slot, the field windings carried by a respective pair of adjacent pole teeth extends into that slot;a slot wedge arranged in each slot; anda separator arranged in each slot, wherein the separator arranged in each slot (a) extends a generally radial direction from a respective slot wedge arranged in that slot toward a slot base and (b) extends between the field windings carried by the pair of adjacent pole teeth associated with that slot.2. The rotor of claim 1 , wherein each separator is formed from a non-magnetizable claim 1 , electrically insulating material.3. The rotor of claim 1 , wherein each separator is formed from a plastic.4. The rotor of claim 1 , wherein each separator has a V-shaped cross section.5. The rotor of claim 1 , wherein each separator is under prestress and press against the respective field winding in at least one contact-pressure region.6. The rotor of claim 1 , wherein each separator physically separates and electrically isolates the slot wedge from the field windings in the respective slot.7. The rotor of claim 1 , wherein each field winding is surrounded by a potting compound.8. The rotor of claim 7 , wherein the potting compound is also provided in a cavity defined between the slot wedge and the separator in each slot.9. The rotor of claim 7 , wherein a cavity defined between the slot wedge and the separator in each slot is free of the potting compound.10. The rotor of claim 1 , wherein each field winding is surrounded ...

METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE

A laminated rotor core () wherein permanent magnets () are inserted in respective magnet insertion holes () is disposed between and pressed by an upper die () and a lower die (). The upper die () has resin reservoir pots () provided above the laminated rotor core () and at positions corresponding to the respective magnet insertion holes (). Raw resin material put in the resin reservoir pots () is heated by the upper die (). Subsequently, the resin material in a liquefied state is ejected from the resin reservoir pots () by plungers () that are inserted and moves vertically in the resin reservoir pots () and is directly filled in the magnet insertion holes (). Consequently, the respective magnet insertion holes () are filled with the resin material more evenly and highly reliable products can be supplied at low cost. 1. A method of resin sealing permanent magnets fixing permanent magnets inserted in a plurality of magnet insertion holes formed in a laminated rotor core , the laminated rotor core formed by laminating a plurality of core pieces , comprising:a step of setting the laminated rotor core on the carrier tray;a step of disposing the laminated rotor core placed on the carrier tray between an upper die and a lower die; anda step of resin sealing the permanent magnets in the magnet insertion holes in a state that the laminated rotor core is pressed between the upper die and the lower die.2. The method of resin sealing permanent magnets as defined in claim 1 , wherein the resin sealing of the permanent magnet into the magnet insertion holes is performed using plungers claim 1 , each plunger vertically moves in the resin reservoir pots claim 1 , by forcing resin material out of resin reservoir pots claim 1 , the resin reservoir pots vertically penetrating the upper die.3. The method of resin sealing permanent magnets as defined in claim 2 , wherein a bushing is provided in the resin reservoir pots to reduce friction with the plunger.4. The method of resin sealing ...

ELECTRIC MACHINES

Stators for radial-flux rotary electric machines and methods of assembling stators for radial flux rotary electric machines are provided. One such stator comprises: a yoke with a plurality of teeth, each tooth extending from a root at the yoke to a tip, the width of each tooth at the root being greater than or equal to the width at the tip thereof to define open slots therebetween; a plurality of coils, each one of which is located on a respective one of the plurality of teeth, wherein the coils are sized such that the slot fill factor of between zero and unity to define axial voids in the slots; and a plurality of magnetic sealing members, each one of which is engaged with the tips of adjacent teeth to circumferentially and axially seal the axial voids in the slots for retaining an axial flow of coolant therein. 1. A stator for a radial-flux rotary electric machine , comprising:a yoke with a plurality of teeth, each tooth extending from a root at the yoke to a tip, the width of each tooth at the root being greater than or equal to the width at the tip thereof to define open slots therebetween;a plurality of coils, each one of which is located on a respective one of the plurality of teeth, wherein the coils are sized such that the slot fill factor of between zero and unity to define axial voids in the slots;a plurality of magnetic sealing members, each one of which is engaged with the tips of adjacent teeth to circumferentially and axially seal the axial voids in the slots for retaining an axial flow of coolant therein.2. The stator of claim 1 , in which the stator is an alternate-wound stator having a number n 4 of teeth and n/2 coils claim 1 , and in which each slot is defined by a wound tooth carrying a coil claim 1 , and an unwound tooth not carrying a coil.3. The electric machine of claim 2 , in which the width of wound teeth is greater than the width of unwound teeth.4. The electric machine of claim 3 , in which the width of wound teeth is twice the width of ...

FLEXIBLE MOLDING PROCESS AND SYSTEM FOR MAGNETIC POLE PROTECTIVE LAYER

A flexible molding process and system for a magnetic pole protective layer. The molding process is as follows: assembling magnet steels at respective positions on a side wall surface of a magnetic yoke, laying a reinforcing material and a vacuum bag in the listed sequence on the magnet steel and the side wall surface of the magnetic yoke, wherein the vacuum bag, the magnet steels and the side wall surface of the magnetic yoke form a sealed system; performing an impregnation process, including vacuumizing the sealed system to allow the impregnation liquid to be injected into the sealed system, to achieve infiltration and impregnation; heating the sealed system and/or emitting ultrasonic waves to the sealed system while performing the impregnation process; and performing a curing process after the impregnation process, wherein the impregnation liquid and the reinforcing material are cured to form a protective layer. 1. A flexible molding process for a magnetic pole protective layer , comprising:assembling magnet steels at respective positions on a side wall surface of a magnetic yoke, laying a reinforcing material and a vacuum bag in the listed sequence on the magnet steels and the side wall surface of the magnetic yoke, wherein the vacuum bag, the magnet steels and the side wall surface of the magnetic yoke form a sealed system;performing an impregnation process, comprising vacuumizing the sealed system to allow the impregnation liquid to be injected into the sealed system, to achieve infiltration and impregnation;heating the sealed system and/or emitting ultrasonic waves to the sealed system while performing the impregnation process; andperforming a curing process after the impregnation process, and wherein the impregnation liquid and the reinforcing material are cured to form a protective layer.2. (canceled)3. The flexible molding process for the magnetic pole protective layer according to claim 1 , comprising: after the protective layer is cured claim 1 , ...

Rotor, electric motor, compressor, air conditioner, and method for manufacturing electric motor

A rotor includes a first permanent magnet, a second permanent magnet, and an electromagnetic steel sheet. The electromagnetic steel sheet includes a magnet insertion hole, a projection, a first end part, a second end part ( 211 b ), a third end part, and a fourth end part. The rotor satisfies an expression of t≤2×w×sin(R/2)≤2×t, where t is a thickness of the electromagnetic steel sheet, R is an angle formed by the third end part and the fourth end part, and w is a distance from an intersection point of a straight line including the first end part and a straight line including the third end part to an intersection point of a straight line including the third end part and a straight line including the fourth end part.

ROTOR MANUFACTURING METHOD

A method of manufacturing a rotor includes: applying the adhesive to an adhesive placement position on an outer peripheral surface of the permanent magnet or an inner peripheral surface of the magnet hole, the adhesive containing an expansive agent that is expanded by being heated to a temperature that is equal to or higher than an expansion temperature; drying the adhesive after applying the adhesive; inserting the permanent magnet into the magnet hole of the rotor core after drying the adhesive; and fixing the permanent magnet and the rotor core to each other using the adhesive by expanding the expansive agent and curing the adhesive by heating the adhesive to a temperature that is equal to or higher than the expansion temperature after inserting the permanent magnet. 18-. (canceled)9. A method of manufacturing a rotor that includes a rotor core having a magnet hole , and a permanent magnet inserted into the magnet hole and fixed to the rotor core using an adhesive , the method comprising:applying the adhesive to an adhesive placement position on an outer peripheral surface of the permanent magnet or an inner peripheral surface of the magnet hole, the adhesive containing an expansive agent that is expanded by being heated to a temperature that is equal to or higher than an expansion temperature;drying the adhesive after applying the adhesive;inserting the permanent magnet into the magnet hole of the rotor core after drying the adhesive; andfixing the permanent magnet and the rotor core to each other using the adhesive by expanding the expansive agent and curing the adhesive by heating the adhesive to a temperature that is equal to or higher than the expansion temperature after inserting the permanent magnet.10. The method of manufacturing a rotor according to claim 9 , whereindrying the adhesive includes drying the adhesive by volatilizing a volatile agent contained in the adhesive.11. The method of manufacturing a rotor according to claim 9 , whereindrying the ...

Rotor of a Current-Activated Electric Machine Having an Improved Slot Filling

A rotor of a current-activated electric machine has a plurality of windings which are arranged on the rotor, slots being formed between the windings. A textile has a plurality of fibers connected to one another in flat contact. The textile is arranged in at least one slot, and the textile is impregnated with a filling material which in the normal operational state of the rotor is in a solid state. 1. A rotor of a current-excited electrical machine , comprising:a plurality of windings which are arranged on the rotor, wherein slots are formed between the windings; the textile is arranged in at least one slot, and', 'the textile is impregnated with a filling material which, in a normal operating state of the rotor, is in a solid state., 'a textile which has a plurality of fibers connected together in flat contact, wherein'}2. The rotor as claimed in claim 1 , whereinthe fibers are aramid and/or an aromatic polyaramid.3. The rotor as claimed in claim 1 , whereinthe textile is a woven fabric or a nonwoven.4. The rotor as claimed in claim 2 , whereinthe textile is a woven fabric or a nonwoven.5. The rotor as claimed in claim 1 , whereina textile is arranged, respectively, in a plurality of slots of the rotor.6. The rotor as claimed in claim 4 , whereinthe textile is arranged in all of the slots of the rotor.7. The rotor as claimed in claim 1 , wherein a resin, and/or', 'an impregnating resin., 'the filling material is8. The rotor as claimed in claim 7 , wherein an aramid nonwoven, or', 'an aramid woven fabric., 'the textile is9. The rotor as claimed in claim 1 , wherein an aramid nonwoven, or', 'an aramid woven fabric., 'the textile is10. A current-excited electrical machine having a rotor as claimed in .11. A method for producing a rotor of a current-excited electrical machine claim 1 , the method comprising the acts of:filling a slot between two windings of the rotor with a textile having a plurality of fibers connected in flat contact; andimpregnating the textile ...

ELECTRIC MACHINE WITH STATOR COOLING CHANNELS

An electric machine includes a housing, a rotor rotatably supported by the housing for rotation about a longitudinal axis and a stator assembly fixed secured to the housing spaced apart from a surface of the rotor and concentric with the rotor about the longitudinal axis. The stator assembly includes a stator winding comprising circumferentially spaced apart stator teeth about the longitudinal axis, the stator teeth having remote ends proximate the surface of the rotor. A plurality of sealed cooling channels extend parallel to the longitudinal axis and are disposed between remote ends of successive teeth. The cooling channels are formed in resin of the stator assembly, the cooling channels being fluidly connected to ports in a closed system to circulate cooling fluid to cool the stator assembly and configured to remove heat from the stator assembly proximate the rotor surface. Other aspects include methods of making such machines. 1. An electric machine comprising:a housing;a rotor rotatably supported by the housing for rotation about a longitudinal axis; anda stator assembly fixed secured to the housing spaced apart from a surface of the rotor and concentric with the rotor about the longitudinal axis, the stator assembly having a stator winding comprising circumferentially spaced apart stator teeth about the longitudinal axis, the stator teeth having remote ends proximate the surface of the rotor, wherein a plurality of longitudinal sealed cooling channels extend parallel to the longitudinal axis are disposed between remote ends of successive teeth, the cooling channels being formed in resin of the stator assembly, the cooling channels being fluidly connected to ports in a closed system to circulate cooling fluid to cool the stator assembly and configured to remove heat from the stator assembly proximate the surface of the rotor.2. The electric machine of wherein each end of each longitudinal cooling channel is fluidly connected to radially extending channels ...

Insulating Tape, Use Thereof As Electrical Insulation For Electrical Machines, Electrical Insulation, And Method For Producing The Insulating Tape

An insulating tape in the form of a particle composite for an electrical insulating tape, use of such insulating tape as insulation, and the production of the insulating tape are disclosed. To produce the insulating tape, electrically insulating, platelet-shaped particles are connected by an electrically insulating binder to an electrical insulating material in the form of an at least partially porous insulating tape. The insulating tape may be windable on a conductor structure when wound under exerted tension force, namely without addition of a materially additionally impeding heat flow. A thermal conductivity which is greater relative to the prior art may help prevent heat accumulation and total failures, e.g., of main insulation.

Method for the Production of a Stack of Laminations

In a method for manufacturing lamination stacks of controlled height in a tool, starting, material is provided as continuous strip delivered from a coil or as an individual sheet. Laminations are punched from the starting material in several punching steps to a required contour of the laminations. A heat-curing adhesive is applied onto the laminations prior to performing a last punching step. The laminations are combined to a lamination stack. The laminations of the lamination stack are partially or completely heated in a lamination storage. The adhesive is liquefied by heating the lamination stack to build up adhesion and then solidified. Curing the adhesive at the liquefying temperature or solidifying the adhesive in the tool by cooling and subsequently heating the adhesive to a temperature below the liquefying temperature is possible so that the adhesive does not melt but undergoes further curing resulting in higher temperature stability. 14213. A method for manufacturing lamination stacks () with a controlled height in a tool () , the method comprising:{'b': '7', 'providing a starting material as a continuous strip delivered from a coil () or as an individual sheet;'}{'b': 5', '5, 'punching laminations () from the starting material in several punching steps to a required contour of the laminations ();'}{'b': '5', 'applying a heat-curing adhesive onto the laminations () prior to performing a last one of the punching steps;'}{'b': '5', 'combining the laminations () to form a lamination stack;'}heating the laminations of the lamination stack partially or completely in a lamination storage.23541. The method according to claim 1 , further comprising heating the adhesive () in the lamination storage () over a partial or full surface area of the laminations.35535. The method according to claim 1 , further comprising heating the adhesive over a partial or full surface area of the laminations very rapidly prior to joining the laminations () and subsequently joining the ...