ELECTRIC DRIVE SYSTEM

The invention relates to a drive system comprising a liquid-cooling electric machine (), and to a method for liquid-cooling the stator winding of said type of machine (). In order to use said system at very low temperatures and in the most simple way possible, said drive system also comprises a cooling circuit () for cooling the liquid of a stator winding of the electric machine (), a pump () for pumping a liquid through the coolant circuit (), a converter () for feeding the stator winding and a control device () for controlling the converter in such a manner that said converter, prior to activating the pump (), feeds a heating flow to the stator winding for heating the cool liquid. 114.-. (canceled)15. An electric drive system , comprising:an electrical machine having a stator winding;a cooling circuit for liquid cooling of the stator winding of the electrical machine;a pump for pumping a cooling liquid through the cooling circuit;a converter for feeding the stator winding; anda control device for operating the converter such that the converter feeds a heating current into the stator winding for heating the cooling liquid prior to the pump being switched on.16. The electric drive system of claim 15 , wherein the cooling liquid is oil.17. The electric drive system of claim 15 , wherein the heating current is a direct current.18. The electric drive system of claim 15 , wherein the heating current is an alternating current used to induce an alternating field in an air gap of the electrical machine.19. The electric drive system of claim 15 , further comprising a measuring instrument for detecting a measured variable characterizing a viscosity of the cooling liquid claim 15 , said control device being designed to produce a switch-on command for the pump when a viscosity threshold value is undershot.20. The electric drive system of claim 19 , wherein the control device is designed to automatically operate the converter to feed an alternating current driving the ...

ROTOR AND METHOD FOR MANUFACTURING A ROTOR OF AN ELECTRIC MACHINE

The invention relates to methods for manufacturing a rotor () for an electric machine (), having the following method steps: a) manufacturing a magnetic element () by bonding permanent magnets (′″) by means of a first adhesive, each permanent magnet (′″) having a side with a magnetic North pole (N) and a side with a magnetic South pole (S), the permanent magnets (′″) being arranged during bonding such that the sides of the magnetic North poles (N) or the sides of the magnetic South poles (S) form a common underside (′″) of the magnetic elements (), the first adhesive having a hard consistency in the cured state; and b) bonding the underside of the magnetic element () to a yoke () by means of a second adhesive, the second adhesive being soft and elastic in the cured state. Furthermore, the invention relates to an associated rotor. The invention permits rational manufacture of a rotor having a permanent magnet for a machine, the permanent magnets being integrally fixed to the yoke of the rotor with high reliability. 114.-. (canceled)15. A method for manufacturing a rotor for an electric machine , comprising:bonding permanent magnets to one another by a first adhesive to form a magnetic element, wherein each permanent magnet has a side with a magnetic North pole and a side with a magnetic South pole, wherein the permanent magnets are arranged during bonding such that the sides of the magnetic North poles or the sides of the magnetic South poles form a common underside of the magnetic element, and wherein the first adhesive has a hard consistency in a cured state to prevent the permanent magnets from moving away from one another, andbonding the underside of the magnetic element to a soft and elastic layer of the yoke by a second adhesive, wherein the second adhesive in a cured state is soft and elastic to resist a rupturing caused by a difference between an expansion of the yoke and an expansion of the magnetic element when being exposed to an increased temperature.16. ...

WIND POWER GENERATOR WITH INTERNAL COOLING CIRCUIT

A wind power generator with a closed internal cooling circuit has a stator that is implemented as sheet metal and includes a winding system which forms winding heads at the end faces of the stator. The stator is enclosed by a cooling jacket at least in the region of the laminated core, wherein permanent magnets of a rotor are disposed on a magnet wheel jacket embodied as a hollow shaft. The magnet wheel jacket is connected in a rotationally fixed manner to a shaft or shaft stubs by way of support elements at its end faces, wherein in its interior the hollow shaft has at least one tube whose lateral surface area runs at an equidistant clearance from the magnet wheel jacket. Blowers are mounted at the end faces of the rotor. 15.-. (canceled)6. A wind power generator with a closed internal cooling circuit , said wind power generator comprising:a stator having a laminated core and a winding system which forms winding heads at end faces of the stator;a cooling jacket enclosing the stator at least in a region of the laminated core;a rotor having a magnet wheel jacket which is embodied as a hollow shaft, and permanent magnets which are disposed on the magnet wheel jacket;a support assembly for connecting the magnet wheel jacket at end faces thereof in a rotationally fixed manner to a shaft or shaft stub of a wind power plant;a first tube arranged in an interior of the hollow shaft and having a lateral surface area extending at an equidistant clearance from the magnet wheel jacket; andblowers respectively mounted at end faces of the rotor.7. The wind power generator of claim 6 , wherein the tube is arranged inside the hollow shaft in such a way as to establish cooling ducts inside the hollow shaft as part of the closed internal cooling circuit claim 6 , thereby permitting a cooling air flow in opposite flow directions inside the hollow shaft.8. The wind power generator of claim 6 , wherein the blowers have blower vanes claim 6 , each of which being attached to a support ...

STATOR OF A PERMANENTLY EXCITED ROTATING ELECTRIC MACHINE

A stator of a permanently excited rotating electric machine has a plurality of segments abutting each other at radially and axially extending segment boundaries. Each segment has a plurality of radially projecting teeth of uniform width and grooves extending in the axial direction and alternatingly arranged in a peripheral direction of the stator. Abutting segments touch each other at the segment boundaries such that an outer tooth of one segment touches an outer tooth of an abutting segment, wherein a sum of the widths of the two teeth touching each other at the corresponding segment boundary is greater than the uniform width of at least a majority of the plurality of teeth of a segment that are not arranged directly at a segment boundary of that segment. Detent moments and/or oscillating moments occurring in a permanently excited rotating electric machine can thereby reduced. 17-. (canceled)8. A stator of a permanently excited rotating electric machine , comprising:a plurality of segments abutting each other at radially and axially extending segment boundaries, each segment comprising a plurality of radially projecting teeth having a uniform width and grooves extending in the axial direction and alternatingly arranged in a peripheral direction of the stator, wherein abutting segments touch each other at the segment boundaries such that an outer tooth of one segment touches an outer tooth of an abutting segment, wherein a sum of the widths of the two teeth touching each other at the corresponding segment boundary is greater than the uniform width of at least a majority of the plurality of teeth of a segment that are not arranged directly at a segment boundary of that segment.9. The stator of claim 8 , wherein the majority of the plurality of teeth includes all teeth that are not arranged directly at the segment boundary.10. The stator of claim 8 , wherein the sum of the widths of the two teeth touching each other at the corresponding segment boundary is smaller ...

Active part of an electrical machine having inclined coils in the winding head area

An active part of an electrical machine has a carrier, a plurality of coils which are arranged on the carrier and which each include a plurality of sub-conductors and a winding head area, in which the coils project out of the carrier in a curved shape, respectively and are connected to one another. At least one of the plurality of coils has a coil arc in the winding head area, and the center line of the coil runs in one plane in the coil arc. The sub-conductors of one coil run parallel to the plane in the coil arc of the coil and themselves in each case form sub-conductor arcs. The vertices of the sub-conductor arcs of the coil form a line of inclination which runs at an angle to the plane.

ROTOR FOR AN ELECTRICAL MACHINE

A rotor for an electrical machine has a rotor body and permanent magnets arranged on the circumference of the rotor body, wherein those areas of the circumference of the rotor body which are covered by the permanent magnets have at least one recess and/or that side of the permanent magnets which faces the circumference of the rotor body has at least one recess. Each recess is configured as a slot which extends in parallel relationship to a circumference-proximal side of the permanent magnets. Removably insertable in the recesses are ferromagnetic bars to allow removal of the permanent magnets. 19.-. (canceled)10. A rotor for an electrical machine , comprising:a rotor body;a permanent magnet arranged on a circumference of the rotor body to thereby cover an area on the circumference of the rotor body, said area having at least one recess formed at least in one of the rotor body and a circumference-proximal side of the permanent magnet so as to define between the permanent magnet and the rotor body a contact area which is between 20% and 85% of a surface area of the circumference-proximal side of the permanent magnet, said recess configured as a slot which extends in parallel relationship to the circumference-proximal side of the permanent magnet; anda ferromagnetic bar removably insertable in the recess to allow removal of the permanent magnet.11. The rotor of claim 10 , wherein the contact surface is between 45% and 55% of the surface area of the circumference-proximal side of the permanent magnet.12. The rotor of claim 10 , wherein the slot has a square claim 10 , rectangular claim 10 , round claim 10 , trapezoidal or V-shaped form.13. A rotor for an electrical machine claim 10 , comprising:a rotor body;a ferromagnetic carrier element arranged on a circumference of the rotor body, said ferromagnetic carrier element having a circumference-distal side and a circumference-proximal side;a permanent magnet arranged on the circumference-distal side of the carrier elements ...

METHOD FOR ASSEMBLING AN ELECTRICAL MACHINE

In a method an inner segment is first pre-assembled on each of a number of outer segments by at least one fixing element, so as to produce a plurality of segment modules having each a predetermined air gap between the inner segment and the outer segment. The inner segments and the outer segments are assigned to the rotor or stator of the electrical machine. The inner segments of the plurality of segment modules are fastened to an inner assembly device (for example a hub). The outer segments of the plurality of segment modules are fastened to an outer assembly device (for example a supporting structure). Finally, the fixing elements between the inner segments and the outer segments are removed. 110-. (canceled)11. A method for assembling an electric machine , comprising:pair-wise mounting an inner ring segment on an outer ring segment by at least one fixing element to thereby produce multiple segment modules, each having a predefined air gap between the inner and outer ring segments;fixing the inner ring segments of the segment modules on an inner assembly device to form a complete ring;fixing the outer segments of the segment modules on an outer assembly device; andremoving the fixing elements between the inner and outer segments of the segment modules.12. The method of for assembling a generator for a wind turbine generator system.13. The method of claim 11 , wherein one member of the group consisting of the inner segments and the outer segments forms a rotor and the other member of the group forms a stator of the electric machine.14. The method of claim 11 , wherein the inner segments or the outer segments are fixed to one another in a circumferential direction.15. The method of claim 11 , further comprising fixing the inner segment or outer segment of each of the segment modules on the inner assembly device or outer assembly device via a flange.16. The method of claim 15 , wherein the inner and outer segments extend each in a circumferential direction across a ...

MAGNETIC STEEL SHEET HAVING A LAYER IMPROVING THE ELECTRICAL INSULATION AND METHOD FOR THE PRODUCTION THEREOF

A magnetic steel sheet including a layer adjoining at least one of a top side and bottom side of the magnetic metal sheet. The layer includes a metal oxide containing titanium oxide or tantalum oxide and the layer adjoins the magnetic steel sheet along a diffusion zone into which the titanium or tantalum of the metal oxide has diffused into the magnetic steel sheet. The diffusion zone is produced on at least one of a top surface and a bottom surface of the magnetic steel sheet and the diffusion layer diffuses one of tantalum and titanium as metal into the at least one surface. The metal of the at the at least one surface is converted into an associated metal oxide to form the layer including the metal oxide, and a residual content of the metal of the metal oxide remains in the diffusion zone. 18-. (canceled)9. A magnetic steel sheet , comprising:a layer adjoining at least one of a top side and a bottom side of the magnetic metal sheet, the layer including a metal oxide selected from the group consisting of titanium oxide and tantalum oxide, the layer adjoining the magnetic steel sheet along a diffusion zone into which at least one of titanium and tantalum has diffused.10. The magnetic steel sheet as claimed in claim 9 , wherein the layer has a thickness of between 5 μm and 10 μm inclusive.11. The magnetic steel sheet as claimed in claim 9 , wherein the diffusion zone includes one of a titanium content and a tantalum content of more than fifty percent by weight within a distance of 2 μm from an interface with the layer.12. A method for treating a magnetic steel sheet claim 9 , comprising:producing a diffusion zone on at least one of a top surface and a bottom surface of the magnetic steel sheet, the diffusion layer diffusing a metal selected from the group consisting of tantalum and titanium into the at least one surface; andconverting the metal at the at least one surface into an associated metal oxide to form a layer including the metal oxide, a residual content of ...

Wind energy plant

Wind turbine with an outrunner generator

Sealing device for electrical machines

Abdichtvorrichtung für eine elektrische Maschine zum Abdichten eines Läuferraums von einem Ständerraum, – die im Wesentlichen büchsenförmig ausgestaltet und zwischen dem Läufer und Ständer der elektrischen Maschine anordenbar ist, und – deren Aufbau wirbelstrommindernd oder -unterdrückend gewählt ist, dadurch gekennzeichnet, dass – deren Material zumindest teilweise aus Edelstahl besteht, so dass ein Edelstahlhohlzylinder (3, 4, 5) gebildet ist, der in axialer Richtung Durchbrüche (31) aufweist. Sealing device for an electric machine for sealing a runner space from a stand space, - Which is designed substantially bush-shaped and can be arranged between the rotor and stator of the electric machine, and - the structure of which is chosen to reduce or suppress eddy currents, characterized in that - The material is at least partially made of stainless steel, so that a hollow stainless steel cylinder (3, 4, 5) is formed, which has openings (31) in the axial direction.

Compressor system for underwater use in the offshore area

The invention relates to a compressor system ( 1 ), particularly for conveying gases or gas/oil mixtures in the offshore area, with a seawater-tight housing ( 2 ) with at least one access opening ( 3 ) for gases or gas/oil mixtures which are to be compressed, and with at least one outlet opening ( 4 ) for the compressed gases or gas/oil mixtures. In the housing ( 2 ), a compressor ( 8 ) is disposed, which is connected at the inlet side to the access opening ( 3 ) and, at the outlet side, to the outlet opening ( 4 ). An electric motor ( 7 ), which has a stator assembly ( 71 ) and a rotor assembly ( 72 ) for driving the compressor ( 8 ), is disposed in the housing ( 2 ). According to the invention, the stator assembly ( 71 ) can be cooled over an inner side (GI) of the housing ( 2 ) of the compressor system ( 1 ).

Electric machine with supported teeth

Elektrische Maschine mit – einem ersten und einem zweiten Aktivteil (12), die in einer Bewegungsrichtung (14) zueinander bewegbar sind, wobei – das erste Aktivteil (1) mehrere Segmente (4, 5) aufweist, – bei jedem Segment (4, 5) mehrere Zähne (7 bis 11, 23 bis 26, 33), von einem Joch (12, 13) abstehen, – ein Randzahn (8, 9) der mehreren Zähne (7 bis 11, 23 bis 26, 33), der sich an einer Segmentgrenze (6) des jeweiligen Segments befindet, dünner ausgebildet ist als ein benachbarter Zahn (7) der mehreren Zähne des Segments, und – der Randzahn (8, 9) und der benachbarte Zahn (7) an ihren Zahnköpfen durch ein Verbindungselement ersten Typs (20) miteinander verbunden sind, und – ein Zahnpaar (25, 26) der mehreren Zähne mit vorgegebener Geometrie durch ein Verbindungselement zweiten Typs verbunden ist, das eine andere Form besitzt als das Verbindungselement ersten Typs (20), dadurch gekennzeichnet, dass – ein weiteres Zahnpaar (23, 24) der mehreren Zähne (7 bis 11, 23 bis 26, 33) des Segments, das nicht an der oder einer anderen Segmentgrenze des Segments liegt, an den Zahnköpfen durch ein weiteres Verbindungselement miteinander verbunden ist, wobei – das weitere Zahnpaar (23, 24) und/oder das weitere Verbindungselement so gestaltet sind, dass ein Rastmoment oder Pendelmoment des ersten Aktivteils (1) gegenüber dem zweiten Aktivteil (2) kleiner ist als in dem Fall, dass das weitere Verbindungselement vom zweiten Typ wäre und die Zähne des weiteren Zahnpaars (23, 24) die vorgegebene Geometrie besäßen. Electric machine with - a first and a second active part (12) which are movable in a direction of movement (14) to each other, wherein - the first active part (1) a plurality of segments (4, 5), - in each segment (4, 5 ) a plurality of teeth (7 to 11, 23 to 26, 33), from a yoke (12, 13) protrude, - an edge tooth (8, 9) of the plurality of teeth (7 to 11, 23 to 26, 33), the itself is located at a segment boundary (6) of the respective segment, thinner than an adjacent tooth (7 ...

Wind power generator with internal cooling circuit

Windkraftgenerator (1) mit einem geschlossenen Innenkühlkreislauf, mit einem geblecht ausgeführten Ständer (4), der ein Wicklungssystem aufweist, das an den Stirnseiten des Ständers Wickelköpfe (10) ausbildet, wobei der Ständer (4) zumindest im Bereich seines Blechpakets von einem Kühlmantel (3) umgeben ist, wobei Permanentmagnete (18) eines Läufers (5) auf einem als Hohlwelle ausgebildeten Polradmantel (6) angeordnet sind, wobei der Polradmantel (6) über Tragelemente (28) an seinen Stirnseiten mit einer Welle (7) oder Wellenstummeln drehfest verbunden ist, wobei die Hohlwelle in ihrem Inneren ein erstes und ein zweites Rohr (29, 33) aufweist, deren Mantelflächen in äquidistantem Abstand zum Polradmantel (6) verlaufen, und wobei an den Stirnseiten des Läufers (5) Lüfter (24, 25) angebracht sind, die einem Kühlluftstrom eine ausreichende Strömungsgeschwindigkeit verleihen, wobei das erste und das zweite Rohr (29, 33) innerhalb der Hohlwelle derart angeordnet sind, dass sich innerhalb der Hohlwelle Kühlkanäle ergeben, die eine gegensinnige Strömungsrichtung des Kühlluftstromes (30) innerhalb der Hohlwelle... Wind power generator (1) with a closed internal cooling circuit, with a laminated stator (4) which has a winding system that forms end windings (10) on the end faces of the stator, the stator (4) at least in the area of its laminated core from a cooling jacket ( 3), with permanent magnets (18) of a rotor (5) being arranged on a pole wheel casing (6) designed as a hollow shaft, the pole wheel casing (6) being non-rotatable on its end faces with a shaft (7) or shaft stubs via support elements (28) is connected, the hollow shaft having in its interior a first and a second tube (29, 33), the outer surfaces of which run at an equidistant distance from the pole wheel jacket (6), and with fans (24, 25) on the end faces of the rotor (5) are attached, which give a cooling air flow a sufficient flow velocity, wherein the first and the second tube (29, 33) are arranged ...

Segment for direct current wind force generator of e.g. gear boxless wind-power plant, has securing element for securing position of stator segment part with respect to rotor segment part, where stator part comprises teeth and grooves

The segment (1) has a securing element (7) for securing a position of a stator segment part (3) with respect to a rotor segment part (5) such that spacing between the stator and rotor segment parts corresponds to or smaller than an air gap thickness (9) of an electric machine. The stator and rotor segment parts exhibit small pitch, where the stator segment part comprises teeth and grooves. The teeth are made of electrical insulating material, where one of the teeth exhibits large width than the other tooth. The stator and rotor segment parts form an angle of about 180 degree. An independent claim is also included for a method for assembling a segmented electric machine.

Composite electric machine

A method for producing an annular active part of an electric machine, where the active part has ring segment-shaped sections with grooves for receiving electric conductors, an electric machine with the ring segment-shaped section, a mill with the electric machine, and a service method for such an electric machine or such a mill, and where the goal is to assembly the electric machine inexpensively.

Composite electric machine

A method for producing an annular active part of an electric machine, where the active part has ring segment-shaped sections with grooves for receiving electric conductors, an electric machine with the ring segment-shaped section, a mill with the electric machine, and a service method for such an electric machine or such a mill, and where the goal is to assembly the electric machine inexpensively.

Permanent magnet rotor for an electrical machine

A rotor for an electrical machine has a rotor body and permanent magnets arranged on the circumference of the rotor body, wherein those areas of the circumference of the rotor body which are covered by the permanent magnets have at least one recess and/or that side of the permanent magnets which faces the circumference of the rotor body has at least one recess. Each recess is configured as a slot which extends in parallel relationship to a circumference-proximal side of the permanent magnets. Removably insertable in the recesses are ferromagnetic bars to allow removal of the permanent magnets.

Enclosed electric machine with liquid cooled stator

Electrical machine, in particular synchronous motor, with redundant stator windings

stator of a permanently excited rotary electric machine

estator de uma máquina elétrica rotativa permanentemente excitada. a invenção refere-se a um estator de uma máquina elétrica rotativa permanentemente excitada (1), em que um primeiro dente central (8a) que tem uma primeira largura de dente central mb está disposto no centro de um primeiro grupo de bobinas (10a), em que o esttaor (5) tem um segundo grupo de bobinas (10b), em que o primeiro e o segundo grupos de bobinas estão dispostos de modo que seguem diretamente um ao outro na direção circunferencial (u), em que um primeiro dente limite (9) que tem uma primeira largura de dente limite rb está disposto entre o primeiro e o segundo grupos de bobinas, em que a primeira largura de dnete limtie rb é substancialmente rb= azb e a primeira largura de dente central mb é substancialmente mb= (2-a)zb, em que o fator a é maior que 0 e menor que 1. a invenção possibilita reduzir os momentos de retenção e/ou momentos de oscilação que ocorrem em uma máquina elétrica rotativa permanentemente excitada (1). stator of a permanently excited rotating electric machine. The invention relates to a stator of a permanently excited rotary electric machine (1), wherein a first central tooth (8a) having a first central tooth width mb is disposed in the center of a first group of coils (10a). wherein the storor (5) has a second coil group (10b), wherein the first and second coil groups are arranged such that they follow each other directly in the circumferential direction (u), wherein a first tooth boundary (9) having a first boundary tooth width rb is disposed between the first and second coil groups, wherein the first limiting tooth width rb is substantially rb = azb and the first central tooth width mb is substantially mb. = (2-a) zb, wherein the factor a is greater than 0 and less than 1. The invention makes it possible to reduce the retention moments and / or oscillation moments that occur in a permanently excited rotating electric machine (1).

Method for mounting an electric machine

The method involves mounting an inner segment (3) i.e. rotor segment, at an outer segment (2) i.e. stator segment, by fixing elements (6) such that segment modules (1) are formed. A preset air gap (5) is formed between the segments that are formed as annular segments and attached to a rotor or a stator of an electric machine. The inner segment is fastened to an inner assembly unit i.e. hub, so that the modules form a complete ring. The outer segment is fastened to an outer assembly unit i.e. support structure. The fixing elements between the inner and outer segments are removed.

Direct drive for large-scale drives

Die Erfindung betrifft einen Direktantrieb für Großantriebe mit einem aus in Umf angsrichtung betrachtet mehreren Segmenten (3, 4, 5, 6) aufgebauten Stator (1), die jeweils eine abgeschlossene Wicklungsanordnung aufweisen, und einem aus Segmenten aufgebauten Rotor, dessen Segmente sich an mitrotierenden Arbeitsmitteln befinden, und dort mit einem Wicklungssystem des Stators (1) elektromagnetisch wechselwirken. Dieser Antrieb ist insbesondere für Ringmotoren und Rohrmühlenantriebe geeignet.

Magnetic steel sheet with a layer that increases the electrical insulation and method for the production of the same

resumo patente de invenção: "chapa de aço magnética dotada de uma camada que aumenta o isolamento elétrico e método para a produção da mesma". a presente invenção refere-se a uma chapa de aço magnética (11) com uma camada (14) que aumenta o isolamento elétrico. de acordo com a presente invenção, essa camada é feita de óxido de tântalo ou de óxido de titânio, sendo que uma zona de difusão (15) que é enriquecida com tântalo ou titânio se liga em direção ao interior da chapa de aço magnética (11). isto tem a vantagem de fazer com que a camada se adira melhor sobre a chapa de aço magnética (11). além disso, o tântalo ou o titânio da zona de difusão (15) pode também ser usado com um depósito, o que tem o efeito de espontaneamente passivar as deficiências da camada (14). sendo assim, uma proteção contra corrosão é garantida mesmo quando acontecem deficiências na dita camada (14). a presente invenção também se refere a um método para a produção de uma chapa de aço magnética da maneira acima descrita. 1/1 Patent specification: "Magnetic steel plate with a layer that increases the electrical insulation and method for its production". The present invention relates to a magnetic steel plate (11) with a layer (14) which enhances electrical insulation. According to the present invention, this layer is made of tantalum oxide or titanium oxide, wherein a diffusion zone (15) which is enriched with tantalum or titanium binds towards the interior of the magnetic steel plate (11). ). This has the advantage of making the layer adhere better to the magnetic steel plate (11). In addition, the diffusion zone tantalum or titanium (15) can also be used with a deposit, which has the effect of spontaneously passivating the deficiencies of the layer (14). Thus, corrosion protection is ensured even when deficiencies occur in said layer (14). The present invention also relates to a method for producing a magnetic steel sheet in the manner described above. 1/1

Magnetic steel sheet having a layer improving the electrical insulation and method for the production thereof

The invention relates to an electrical steel sheet (11) with a layer (14) improving the electrical insulation. According to the invention, this layer is formed from tantalum oxide or titanium oxide, wherein a diffusion zone (15) that is enriched with tantalum or titanium adjoins toward the interior of the electrical steel sheet (11). This has the advantage that the layer adheres better on the electrical steel sheet (11). Furthermore, the tantalum or titanium of the diffusion zone (15) can also be used as a depot, which has the effect of spontaneously passivating impairments of the layer (14). Therefore, corrosion protection is ensured even when there are impairments of said layer (14). The invention also relates to a method for producing an electrical steel sheet in the way described.

Electric machine e.g. direct-driven wind generator, for use in ore mill, has active component whose full depth teeth and half depth teeth are mechanically connected with each other by anchor element

The machine (1) has an active component (3) e.g. stator, provided with full depth teeth (5) and a half depth teeth (9) that are mechanically connected with each other by an anchor element (7) e.g. bracket. The full depth and half depth tooth comprise grooves (15, 17). The anchor element comprises end sides that are engaged into the grooves. The anchor element comprises a tangentially aligned portion and a radially aligned portion, and is positioned in a head portion of the tooth. The grooves comprise a widening unit whose cross-section is smaller than that of a widening unit of the sides.

Seal device for an electric machine for sealing the rotor chamber from the stator chamber made of a material which prevents or reduces eddy currents

The seal device seals of the area where the rotor is from the area where the stator is. The seal is essential sleeve shaped and can be disposed between the rotor and the stator of the machine. The structure and/or material of the seal device are selected so as to prevent or suppress eddy currents. Preferably the material includes ceramic and/or fiber reinforced plastic (1) and/or stainless steel.

Rotor and method for manufacturing a rotor of an electric machine

The invention relates to methods for manufacturing a rotor ( 14 ) for an electric machine ( 13 ), having the following method steps: a) manufacturing a magnetic element ( 8 ) by bonding permanent magnets ( 1, 1′, 1″, 1 ′″) by means of a first adhesive, each permanent magnet ( 1, 1′, 1″, 1 ′″) having a side with a magnetic North pole (N) and a side with a magnetic South pole (S), the permanent magnets ( 1, 1′, 1″, 1 ′″) being arranged during bonding such that the sides of the magnetic North poles (N) or the sides of the magnetic South poles (S) form a common underside ( 3, 3′, 3″, 3 ′″) of the magnetic elements ( 8 ), the first adhesive having a hard consistency in the cured state; and b) bonding the underside of the magnetic element ( 8 ) to a yoke ( 12 ) by means of a second adhesive, the second adhesive being soft and elastic in the cured state. Furthermore, the invention relates to an associated rotor. The invention permits rational manufacture of a rotor having a permanent magnet for a machine, the permanent magnets being integrally fixed to the yoke of the rotor with high reliability.

Electric drive system

Die Erfindung betrifft ein Antriebssystem mit einer flüssigkeitsgekühlten elektrischen Maschine (1) sowie ein Verfahren zur Flüssigkeitskühlung der Ständerwicklung einer derartigen Maschine (1). Um einen Einsatz bei sehr niedrigen Umgebungstemperaturen möglichst aufwandsarm zu ermöglichen, umfasst das Antriebssystem ferner - einen Kühlkreislauf (2) zur Flüssigkeitskühlung einer Ständerwicklung der elektrischen Maschine (1), - eine Pumpe (3) zum Pumpen einer Kühlflüssigkeit durch den Kühlkreislauf (2), - einen Umrichter (4) zur Speisung der Ständerwicklung und - eine Steuereinrichtung (5) zur Ansteuerung des Umrichters, derart, dass dieser vor einem Einschalten der Pumpe (3) einen Aufheizstrom in die Ständerwicklung zur Erwärmung der Kühlflüssigkeit einspeist. The invention relates to a drive system with a liquid-cooled electric machine (1) and a method for liquid cooling of the stator winding of such a machine (1). In order to enable use at very low ambient temperatures as little as possible, the drive system further comprises - a cooling circuit (2) for liquid cooling a stator winding of the electric machine (1), - a pump (3) for pumping a cooling liquid through the cooling circuit (2), - A converter (4) for supplying the stator winding and - a control device (5) for controlling the inverter, such that this before starting the pump (3) feeds a heating current in the stator winding for heating the cooling liquid.

Stator of a permanently excited rotating electric machine

Estator de una máquina eléctrica (1) giratoria excitada permanentemente, en el que el estator (5) presenta varios dientes (7a, 8a, 9) y ranuras (6a, 6d) que se extienden en la dirección axial (Z) del estator (5), en el que a lo largo de la periferia del estator (5) están dispuestos grupos de bobinas (10a, 10b), en el que todas las ranuras presentan una anchura de ranura unitaria NB, caracterizado porque los grupos de bobinas (10a, 10b) presentan, respectivamente, al menos tres bobinas (R1, T1, S1), que están dispuesta en dirección circunferencial (U) en ranuras dispuestas directamente sucesivas, en el que los dientes, que no están dispuestos en el centro de un grupo de bobinas (10a, 10b) y no están dispuestos entre dos grupos de bobinas (10a, 10b) dispuestos directamente sucesivos en la dirección circunferencial (U) del estator (5), presentan una anchura unitaria de los dientes ZB, en el que en el centro de un primer grupo de bobinas (10a) está dispuesto un primer diente central (8a), que presenta una primera anchura de diente central MB, en el que el estator (5) presenta un segundo grupo de bobinas (10b), en el que el primero y el segundo grupo de bobinas están dispuestos directamente sucesivos en dirección circunferencial (U), en el que entre el primero y el segundo grupo de bobinas está dispuesto un primer diente marginal (9), que presenta una primera anchura de diente marginal RB, en el que la primera anchura de diente marginal RB es esencialmente RB >= a · ZB y la primera anchura de diente central MB es esencialmente MB >= (2-a) · ZB, en el que el factor a es mayor que 0 y es máximo 0,35. Stator of a permanently excited rotating electrical machine (1), in which the stator (5) has several teeth (7a, 8a, 9) and grooves (6a, 6d) extending in the axial direction (Z) of the stator ( 5), in which groups of coils (10a, 10b) are arranged along the periphery of the stator (5), in which all the slots have a unit slot width NB, characterized in that the groups of ...

Electrical machine has winding in stator and/or rotor, directly thermally connected to cooling channel via main insulation

The electrical machine has a stator (2) and a rotor (3). The stator and/or the rotor have a winding (6) which is, via its main insulation, in direct thermal contact with a cooling channel part. The rotor or stator comprises a laminated stack with grooves (4,5) in which the winding is located.

Stator of a permanently excited rotating electric machine

Dynamo-electric machine e.g. wind power generator has insulation section overlap portion provided at bottom of groove in laminated core of stator, in a state facing side of conductor of coils

The dynamo-electric machine has stator (1) comprising laminated core (2) with axially extending grooves (3) which are opened to a stator hole (6). A return conductor of coil is located outwardly in grooves. An insulation section is provided between outgoing and return conductors in a state surrounding the return conductor of groove walls. An overlap portion of insulation section is provided at the bottom (4) of groove in a state facing the side of conductor of coils. An independent claim is included for method for manufacturing stator of dynamo-electric machine.

Compact drive-generator unit for wind turbines

The drive train (1) has a gear (2) with a gear housing (3), where the gear is connected with a wind rotor by a slow-speed drive shaft (6). A generator (4) has a generator housing (5) firmly connected with gear housing. Another generator is arranged coaxial to the drive shaft of the gear is arranged and has a generator shaft (7) mounted at generator housing.

Encapsulated electric machine with liquid-cooled stator

Es soll eine einfache und effiziente Kühlung von gekapselten elektrischen Maschinen bereitgestellt werden. Eine derartige elektrische Maschine besteht aus einem Stator (S), einem Rotor (R) und einer Kapselung (K), die den Rotor gegenüber dem Stator dicht abkapselt. Zur effizienten Kühlung weist der Stator eine Flüssigkeitskühleinrichtung mit einem bildet die Kapselung (K) einen Teil der Außenwandung des Kühlkreislaufs (SK). It is a simple and efficient cooling of encapsulated electrical machines are provided. Such an electric machine consists of a stator (S), a rotor (R) and an encapsulation (K), which tightly encapsulates the rotor relative to the stator. For efficient cooling, the stator has a liquid cooling device with which the encapsulation (K) forms part of the outer wall of the cooling circuit (SK).

direct drive for large drives

acionamento direto para acionamentos de grande porte. a presente invenção refere-se a um acionamento direto para acionamentos de grande porte, compreendendo um estator (1) que é configurado, quando visto desde a direção periférica, por uma pluralidade de segmentos (3, 4, 5, 6), cada um tendo um arranjo de enrolamento autocontido, e um rotor que é configurado com segmentos. os segmentos do rotor estão localizados em elementos de trabalho que giram com o rotor, e interagem eletromagneticamente com um sistema de enrolamento do estator (1). o acionamento inventivo é especialmente adequado para motores de anel e acionamentos de moinho de tubo. direct drive for large drives. The present invention relates to a direct drive for large drives comprising a stator (1) which is configured, when viewed from the peripheral direction, by a plurality of segments (3, 4, 5, 6) each having a self-contained winding arrangement, and a rotor that is configured with segments. The rotor segments are located on working elements that rotate with the rotor, and interact electromagnetically with a stator winding system (1). The inventive drive is especially suitable for ring motors and tube mill drives.

Stator of a permanently excited rotating electric machine

The invention relates to a stator of a permanently excited rotating electric machine (1), wherein a first central tooth (8a) having a first central tooth width MB is disposed in the centre of a first coil group (10a), wherein the stator (5) has a second coil group (10b), wherein the first and the second coil groups are disposed so that they directly follow one another in the circumferential direction (U), wherein a first boundary tooth (9) having a first boundary tooth width RB is disposed between the first and the second coil groups, wherein the first boundary tooth width RB is substantially RB = a ⋅ ZB and the first central tooth width MB is substantially MB = (2-a) ⋅ ZB, wherein the factor a is greater than 0 and less than 1. The invention makes it possible to reduce detent moments and/or oscillating moments occurring in a permanently excited rotating electric machine (1).

Direct drive for large-scale drives

The invention relates to a direct drive for large-scale drives, comprising a stator (1) which is configured, when seen from the peripheral direction, by a plurality of segments (3, 4, 5, 6), each having a self-contained winding arrangement, and a rotor which is configured from segments. The segments of the rotor are located on working elements that rotate with the rotor, and interact electromagnetically with a winding system of the stator (1). The inventive drive is especially suitable for ring motors and tube mill drives.

Direct drive for large-scale drives

Electric drive system

The invention relates to a drive system comprising a liquid-cooling electric machine (1), and to a method for liquid-cooling the stator winding of said type of machine (1). In order to use said system at very low temperatures and in the most simple way possible, said drive system also comprises a cooling circuit (2) for cooling the liquid of a stator winding of the electric machine (1), a pump (3) for pumping a liquid through the coolant circuit (2), a converter (4) for feeding the stator winding and a control device (5) for controlling the converter in such a manner that said converter, prior to activating the pump (3), feeds a heating flow to the stator winding for heating the cool liquid.

Mill for milling rough, stone-like bulk material with parallel to the axis drive

Compressor system for underwater use in the offshore area

The invention relates to a compressor system (1), particularly for conveying gases or gas/oil mixtures in the offshore area, with a seawater-tight housing (2) with at least one access opening (3) for gases or gas/oil mixtures which are to be compressed, and with at least one outlet opening (4) for the compressed gases or gas/oil mixtures. In the housing (2), a compressor (8) is disposed, which is connected at the inlet side to the access opening (3) and, at the outlet side, to the outlet opening (4). An electric motor (7), which has a stator assembly (71) and a rotor assembly (72) for driving the compressor (8), is disposed in the housing (2). According to the invention, the stator assembly (71) can be cooled over an inner side (GI) of the housing (2) of the compressor system (1).

Segmented stator for a dynamoelectric machine

Die Erfindung betrifft ein Segment (8) für einen ringförmigen Stator einer dynamoelektrischen Maschine (14). Transport und Montage einer derartigen Maschine (14) werden dadurch vereinfacht, dass - das Segment (8) einen im Wesentlichen kreisbogenförmigen Querschnitt umfasst, - durch Anfügen eines oder mehrerer Segmente zu dem Stator ergänzt werden kann, - die geschlossene Ringform des Stators durch Trennen der Segmente (8) voneinander aufhebbar ist und - das Segment (8) für jede Phase eines Drehstromsystems mindestens eine innerhalb des Segmentes geschlossene erste Spule (1, 2, 3) aufweist, die unabhängig von weiteren Spulen der weiteren Segmente zur Erzeugung eines ersten Polpaares eines Drehfeldes mit einem Drehstrom bestrombar sind. The invention relates to a segment (8) for an annular stator of a dynamo-electric machine (14). Transport and assembly of such a machine (14) are simplified in that - the segment (8) has an essentially circular arc-shaped cross section, - can be supplemented by adding one or more segments to the stator, - the closed ring shape of the stator by separating the Segments (8) can be canceled from one another and - the segment (8) for each phase of a three-phase system has at least one first coil (1, 2, 3) closed within the segment, which independently of further coils of the further segments for generating a first pole pair Rotating field can be energized with a three-phase current.

Rotor and method for manufacturing a rotor of an electric machine

The invention relates to methods for manufacturing a rotor (14) for an electric machine (13), having the following method steps: a) manufacturing a magnetic element (8) by bonding permanent magnets (1, 1', 1'', 1''') by means of a first adhesive, each permanent magnet (1, 1', 1'', 1''') having a side with a magnetic North pole (N) and a side with a magnetic South pole (S), the permanent magnets (1, 1', 1'', 1''') being arranged during bonding such that the sides of the magnetic North poles (N) or the sides of the magnetic South poles (S) form a common underside (3, 3', 3'', 3''') of the magnetic elements (8), the first adhesive having a hard consistency in the cured state; and b) bonding the underside of the magnetic element (8) to a yoke (12) by means of a second adhesive, the second adhesive being soft and elastic in the cured state. Furthermore, the invention relates to an associated rotor. The invention permits rational manufacture of a rotor having a permanent magnet for a machine, the permanent magnets being integrally fixed to the yoke of the rotor with high reliability.

Winding plan for a segmented stator of a dynamo-electric machine

A segmented annular stator for a dynamo-electric machine is disclosed which simplifies transport and assembly of the machine. The segment has a cross section essentially shaped as a circular arc and includes a first and a second segment boundary configured for attachment to an additional segment, a corresponding coil associated with each phase of a three-phase system, a first conductor, and a second conductor. The first conductor is connected to the second conductor via an end connection in an area of end windings, such that a first coil associated with a first phase surrounds second and third coils associated with second and third phases of the three-phase system.

Composite electric machine

The invention relates to a method for producing an annular active part of an electric machine. The active part has ring segment-shaped sections (1) with grooves (2) for receiving electric conductors (3). The invention further relates to such a ring segment-shaped section (1), an electric machine with such a section (1), and a mill with such an electric machine. Lastly, the invention relates to a service method for such an electric machine or such a mill. The aim of the invention is an inexpensive assembly of an electric machine. This is achieved by, among others, the following method steps: - forming sections (1) with the grooves (2), - providing at least two, preferably three, galvanically separated electric conductors (3), each electric conductor (3) being designed so as to be arrangeable in at least two different grooves (2) of each section (1) such that the electric conductors run in opposite directions, - insulating each electric conductor (3) with a respective electrically insulating insulation layer (4), - impregnating each insulation layer (4) of each electric conductor (3) with an impregnating agent, - introducing each insulated and impregnated electric conductor (3) into the at least two different grooves (2) of each section (1), - transporting each section (1) together with each electric conductor (3) introduced into the section to an assembly and/or operating location of the electric machine, - and assembling the annular active part by joining at least two of the sections (2) by means of at least one respective connection (5).

System zur verdichtung von gasen

System zur Verdichtung von Gasen mit zumindest einem Verdichter (1) , der durch eine Gasturbine (2) über einen Wellenstrang (3) angetrieben wird, wobei ein Asynchronmotor (4) mit einem massiven Läufer (6) als Starter einsetzbar und zwichen Verdichter (1) und Gasturbine (2) angeordnet ist.

Aktivteil einer elektrischen maschine mit schrägen spulen im wickelkopfbereich

Elektrische Maschinen sollen kompakter gebaut werden. Dazu wird ein Aktivteil einer elektrischen Maschine mit einem Träger (9), mehreren Spulen (11,12,13), die an dem Träger (9) angeordnet sind und die jeweils mehrere Teilleiter (14) aufweisen und einem Wickelkopfbereich, in dem die Spulen (11, 12,13) jeweils bogenförmig aus dem Träger (9) ragen und miteinander verschaltet sind, bereitgestellt. Mindestens eine der mehreren Spulen (11, 12, 13) besitzt im Wickelkopfbereich einen Spulenbogen, und die Mittellinie (15,16,17) der Spule verluft in dem Spulenbogen in einer Ebene. Die Teilleiter (14) der einen Spule verlaufen in dem Spulenbogen der Spule parallel zu der Ebene und bilden selbst jeweils Teilleiterbögen. Die Scheitelpunkte (18) der Teilleiterbögen der Spule bilden eine Neigungslinie (26), die schräg zu der Ebene verläuft.

Aktivteil einer elektrischen maschine mit schrägen spulen im wickelkopfbereich

Elektrische Maschinen sollen kompakter gebaut werden. Dazu wird ein Aktivteil einer elektrischen Maschine mit einem Träger (9), mehreren Spulen (11,12,13), die an dem Träger (9) angeordnet sind und die jeweils mehrere Teilleiter (14) aufweisen und einem Wickelkopfbereich, in dem die Spulen (11, 12,13) jeweils bogenförmig aus dem Träger (9) ragen und miteinander verschaltet sind, bereitgestellt. Mindestens eine der mehreren Spulen (11, 12, 13) besitzt im Wickelkopfbereich einen Spulenbogen, und die Mittellinie (15,16,17) der Spule verluft in dem Spulenbogen in einer Ebene. Die Teilleiter (14) der einen Spule verlaufen in dem Spulenbogen der Spule parallel zu der Ebene und bilden selbst jeweils Teilleiterbögen. Die Scheitelpunkte (18) der Teilleiterbögen der Spule bilden eine Neigungslinie (26), die schräg zu der Ebene verläuft.

Magnetic steel sheet having a layer improving the electrical insulation and method for the production thereof

A magnetic steel sheet including a layer adjoining at least one of a top side and bottom side of the magnetic metal sheet. The layer includes a metal oxide containing titanium oxide or tantalum oxide and the layer adjoins the magnetic steel sheet along a diffusion zone into which the titanium or tantalum of the metal oxide has diffused into the magnetic steel sheet. The diffusion zone is produced on at least one of a top surface and a bottom surface of the magnetic steel sheet and the diffusion layer diffuses one of tantalum and titanium as metal into the at least one surface. The metal of the at the at least one surface is converted into an associated metal oxide to form the layer including the metal oxide, and a residual content of the metal of the metal oxide remains in the diffusion zone.

Method for assembling a segmented electrical machine while maintaining gaps between segments

In a method an inner segment is first pre-assembled on each of a number of outer segments by at least one fixing element, so as to produce a plurality of segment modules having each a predetermined air gap between the inner segment and the outer segment. The inner segments and the outer segments are assigned to the rotor or stator of the electrical machine. The inner segments of the plurality of segment modules are fastened to an inner assembly device (for example a hub). The outer segments of the plurality of segment modules are fastened to an outer assembly device (for example a supporting structure). Finally, the fixing elements between the inner segments and the outer segments are removed.