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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 5299. Отображено 100.
30-07-2020 дата публикации

Реактор заземляющий дугогасящий с распределенными немагнитными зазорами РДМК, РДСК регулированием по вторичной обмотке

Номер: RU0000198869U1
Автор: Алексей Александрович Кузьмин, Вячеслав Германович Медведев, Евгений Вячеславович Парамонов, Евгений Михайлович Петров, Ильдар Равильевич Баязитов, Михаил Иванович Петров
Принадлежит: OOO "НИР Энерго"

Область использования относится к электротехнике, а именно: к силовому оборудованию компенсации емкостных токов замыкания на землю в электрических сетях среднего напряжения.Сущность полезной модели: дугогасящие заземляющие реакторы (ДГР) сухие и масляные с зазорами в стержнях с обмотками с высокой линейностью вольтамперных характеристик.Технический результат полезной модели заключается в улучшении характеристик дугогасящего реактора для повышения эффективности эксплуатации систем компенсации емкостных токов: повышения точности настройки контура нулевой последовательности сети; снижения уровня высших гармонических составляющих в токе замыкания на землю, энергоэффективности оборудования, повышения его надежности.Указанный технический результат достигается тем, что для обеспечения линейности характеристик ДГР и точности настройки контура, снижения потерь во вторичной обмотке конструктивно изменены расположение и исполнение рабочей обмотки и вторичных нагрузочных обмоток (управления) реактора, введена дополнительная обмотка в магнитную систему ярем. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 198 869 U1 (51) МПК H01F 29/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H01F 29/00 (2020.05) (21)(22) Заявка: 2020104465, 31.01.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 30.07.2020 (73) Патентообладатель(и): OOO "НИР Энерго" (RU) (45) Опубликовано: 30.07.2020 Бюл. № 22 (54) Реактор заземляющий дугогасящий с распределенными немагнитными зазорами РДМК, РДСК регулированием по вторичной обмотке (57) Реферат: Область использования относится к контура нулевой последовательности сети; электротехнике, а именно: к силовому снижения уровня высших гармонических оборудованию компенсации емкостных токов составляющих в токе замыкания на землю, замыкания на землю в электрических сетях энергоэффективности оборудования, повышения среднего напряжения. его надежности. Сущность полезной модели: дугогасящие ...

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Номер записи: 1
30-09-2020 дата публикации

Фильтр заземляющий нулевой последовательности с пониженным потреблением мощности

Номер: RU0000199969U1
Автор: Андрей Викторович Сентябрев, Вячеслав Германович Медведев, Евгений Михайлович Петров, Ильдар Равильевич Баязитов, Михаил Иванович Петров, Сергей Петрович Чугунов
Принадлежит: Общество с ограниченной ответственностью "НИР Энерго"

Область использования относится к электротехнике, а именно к силовому оборудованию защиты электрических сетей среднего напряжения от последствий однофазных замыканий на землю.Сущность полезной модели: фильтры заземляющие нулевой последовательности с пониженной потребляемой мощностью в нормальном режиме работы электрической сети.Технический результат полезной модели заключается в снижении величины тока холостого хода фильтра нулевой последовательности, являющегося основным режимом работы, в упрощении реализации поставленной задачи, в повышении энергоэффективности оборудования, его надежности.Указанный технический результат достигается тем, что для снижения тока потребления в режиме холостого хода производится компенсация реактивной составляющей тока посредством подключения конденсатора или регулируемого конденсаторного устройства к выводам линейного напряжения вторичной обмотки. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 199 969 U1 (51) МПК H01F 29/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H01F 29/00 (2020.08) (21)(22) Заявка: 2020125084, 28.07.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 30.09.2020 (73) Патентообладатель(и): Общество с ограниченной ответственностью "НИР Энерго" (RU) (45) Опубликовано: 30.09.2020 Бюл. № 28 (54) ФИЛЬТР ЗАЗЕМЛЯЮЩИЙ НУЛЕВОЙ ПОСЛЕДОВАТЕЛЬНОСТИ С ПОНИЖЕННЫМ ПОТРЕБЛЕНИЕМ МОЩНОСТИ (57) Реферат: Область использования относится к являющегося основным режимом работы, в электротехнике, а именно к силовому упрощении реализации поставленной задачи, в оборудованию защиты электрических сетей повышении энергоэффективности оборудования, среднего напряжения от последствий однофазных его надежности. замыканий на землю. Указанный технический результат достигается Сущность полезной модели: фильтры тем, что для снижения тока потребления в режиме заземляющие нулевой последовательности с холостого хода производится компенсация пониженной потребляемой мощностью в ...

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Номер записи: 2
12-11-2020 дата публикации

Регулятор напряжения трансформатора

Номер: RU0000200820U1
Автор: Аркадий Анатольевич Степанов
Принадлежит: Аркадий Анатольевич Степанов, Хорьяков Владимир Владимирович

Полезная модель относится к области электротехники и может быть использована для регулировки напряжения силового трансформатора. Техническим результатом полезной модели является бесконтактная регулировка напряжения трансформатора. Регулятор напряжения трансформатора содержит трехфазный силовой трансформатор, трехфазный силовой автотрансформатор, конденсаторы, катушки индуктивности, нагрузку и ваттметры.В регуляторе напряжения трансформатора первичная обмотка трехфазного силового трансформатора соединена параллельно одному трехфазному конденсатору, трехфазному силовому автотрансформатору и через ваттметры с трехфазным источником переменного напряжения, фаза С первичной обмотки трехфазного силового трансформатора соединена через конденсатор с нулевым потенциалом, а фаза А трансформатора соединена с нулевым потенциалом через катушку индуктивности, вторичная обмотка силового трехфазного трансформатора соединена параллельно нагрузке и другому трехфазному конденсатору, а также трехфазной индуктивности. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 200 820 U1 (51) МПК H01F 29/02 (2006.01) H02P 13/06 (2006.01) H02J 3/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H01F 29/02 (2020.08); H02P 13/06 (2020.08); H02J 3/12 (2020.08) (21)(22) Заявка: 2020117120, 12.05.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Степанов Аркадий Анатольевич (RU), Хорьяков Владимир Владимирович (RU) Дата регистрации: 12.11.2020 (45) Опубликовано: 12.11.2020 Бюл. № 32 2 0 0 8 2 0 R U (54) РЕГУЛЯТОР НАПРЯЖЕНИЯ ТРАНСФОРМАТОРА (57) Реферат: Полезная модель относится к области трехфазному конденсатору, трехфазному электротехники и может быть использована для силовому автотрансформатору и через ваттметры регулировки напряжения силового с трехфазным источником переменного трансформатора. Техническим результатом напряжения, фаза С первичной обмотки полезной модели является бесконтактная трехфазного силового ...

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Номер записи: 3
21-06-2012 дата публикации

Voltage transforming apparatus

Номер: US20120154090A1
Автор: Katsumi Konii, Toshihiro Noda
Принадлежит: Mitsubishi Electric Corp

A voltage transforming apparatus includes a primary winding receiving an AC voltage, a plurality of secondary windings that are different in number of turns, and a voltage conversion circuit for converting an AC voltage induced in each of the plurality of secondary windings. Each of the plurality of secondary windings includes the first terminal and the second terminal each having a potential that is not fixed. The first terminal and the second terminal are separately provided in each of the secondary windings. The voltage transforming apparatus further includes a switching circuit for selectively connecting the first terminal and the second terminal of each of the plurality of secondary windings to the voltage conversion circuit.

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Номер записи: 4
22-11-2012 дата публикации

Fault gas alarm system

Номер: US20120293333A1
Автор: Anik Roy Trudel, Mariana Barbulescu, Yong Ng Tong
Принадлежит: General Electric Co

A fault gas alarm system is disclosed. In one embodiment, the fault gas alarm system includes: a gas sensor configured to fluidly connect with an oil valve in an oil-filled vacuum-type on-load tap changer (OLTC), the gas sensor for monitoring a gas level in an oil within the oil valve; and a bi-level alarm system electrically connected with the gas sensor, the bi-level alarm system including a visual alarm indicator configured to provide a visual alarm in response to receiving an indication the gas level in the oil exceeds a threshold.

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Номер записи: 5
15-08-2013 дата публикации

ON-LOAD TAP CHANGER

Номер: US20130206555A1
Автор: Donhauser Juergen, Meisel Roland, Pircher Christian
Принадлежит:

The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption. The general inventive concept lies in eliminating the previously static design of the on-load tap changer, comprising a load transfer switch and a selector adjoining directly under the load transfer switch, and to bring about a spatial separation of the load transfer switch and selector assemblies. 1. An on-load tap changer for uninterrupted switching over between different winding taps of a regulating winding of a tapped transformer , the tap changer comprising:at least one selector for power-free selection of the respective winding tap of a tapped transformer that is to be switched over to and a load changeover switch for the actual switching over from the connected to the new, preselected winding tap, the at least one selector and the load changeover switch being spatially separate from one another.2. The on-load tap changer according to claim 1 , wherein the at least one selector is in the transformer vessel of the tapped transformer.3. The on-load tap changer according to claim 1 , wherein the at least one selector is in the immediate spatial vicinity of the respective winding taps of the regulating winding of the tapped transformer.4. The on-load tap changer according to claim 1 , wherein the at least one selector and the load changeover switch are drivable by way of a common linkage.5. The on-load tap changer according to claim 1 , wherein the linkage is led through the lateral wall into the transformer vessel and extends at least partly therein.6. The on-load tap changer according to claim 1 , wherein the at least one selector and the load changeover switch are actuatable by a linear motor or a torque motor.7. The on-load tap changer according to claim 1 , wherein several selectors are of identical construction. The invention relates to an on-load tap changer for uninterrupted switching over between different winding taps of ...

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Номер записи: 6
22-08-2013 дата публикации

Tap changer

Номер: US20130213777A1
Автор: Dieter Dohnal, Hubert Haering, Karlheinz Lindl
Принадлежит: HAAS FOOD EQUIPMENT GMBH, Maschinenfabrik Reinhausen GmbH

The invention relates to a tap changer for switching among winding taps of a step transformer without interruption, said step transformer having an oil-filled transformer tank, wherein the tap changer does not have a separate housing or a housing that completely encloses the tap changer and is arranged on the outside of or inside the transformer tank connected to the oil filling of the step transformer.

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Номер записи: 7
26-09-2013 дата публикации

Tap changer

Номер: US20130249528A1
Автор: Dieter Dohnal, Jochen von Bloh, Karsten Viereck, Matthias Biskoping
Принадлежит: Maschinenfabrik Reinhausen GmbH

The invention relates to a tap changer for regulating voltage, comprising semiconductor switching elements on a regulating transformer having a regulating winding. The tap changer is modularly constructed, wherein each module comprises a sub-winding of the regulating winding that can be switched on or off by semiconductor switching elements.

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Номер записи: 8
06-02-2014 дата публикации

Tap Changer

Номер: US20140034464A1
Автор: Larsson Tommy, Mannerbro Richard, Mathae Jean
Принадлежит:

A tap changer for connection to a regulating winding of a rated regulation voltage is provided. The tap changer having a linear tap selector having at least one current collector and a linear arrangement of fixed contacts. Tap changer further includes a shielding structure arranged to shield the tap selector from an external electrical field. The shielding structure includes: a first shielding part arranged to be electrically connected to a current collector; and a second shielding part formed at least partly by the fixed contacts. The first and second shielding parts are separated so that the distance between the first and second shielding parts reaches or exceeds the rated regulating voltage insulation distance of the tap changer. 1. A tap changer for connection to a regulating winding of a rated regulation voltage , the tap changer having a tap selector; whereinthe tap selector comprises:a set of linearly arranged fixed contacts comprising at least two fixed contacts each arranged to be connected to a tap of the regulating winding;at least one current collector; andat least one movable contact part having a moveable contact arranged to electrically bridge a contact gap between a current collector and a fixed contact, a moveable contact part being linearly moveable along a current collector;the tap changer further comprising: a first shielding part for shielding the tap selector mainly from external electrical fields occurring behind the current collectors as seen from the fixed contacts, the first shielding part being arranged to be electrically connected to the connected tap of the regulating winding; and', 'a second shielding part formed at least partly by the fixed contacts; wherein the first and second shielding parts are separated so that the distance between the first and second shielding parts reaches or exceeds the rated regulating voltage insulation distance of the tap changer., 'a shielding structure arranged to shield the tap selector from an external ...

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Номер записи: 9
27-03-2014 дата публикации

TAP CHANGER AND VACUUM INTERRUPTER FOR SUCH A TAP CHANGER

Номер: US20140085028A1
Автор: Albrecht Wolfgang, Hammer Christian, Hartmann Werner, Kosse Sylvio, Lawall Andreas, Pircher Christian, Raedlinger Konrad, Rehkopf Sebastian, Renz Astrid, Sachsenhauser Andreas, Stelzer Andreas, Teichmann Joerg, Wenzel Norbert
Принадлежит:

The invention relates to a tap changer for the interruption-free switchover between winding taps of a tap-changing transformer. Furthermore, the present invention relates to a novel vacuum interrupter which is particularly suitable for such a tap changer. The tap changer according to the invention is based on the general concept of combining in each case one main contact (V1) and one mechanical switching means (U1), connected in series therewith, of a first load branch and an additional resistive contact (V) of a second load branch in only a single vacuum interrupter () with a common housing (). The vacuum interrupter () according to the invention is furthermore based on the general inventive concept of replacing the functionalities of two required vacuum interrupters in accordance with the prior art and an additional mechanical switching means with a single vacuum interrupter () according to the invention by virtue of combining the design of a vacuum interrupter () with a plurality of moveable contact systems (I, II, III), which are arranged in separate vacuum 1. A tap changer with vacuum-switching tubes for uninterrupted changeover between winding taps of a tapped transformer , whereintwo load branches are provided for each phase to be switched,each load branch comprises a vacuum-switching tube acting as a main contact and mechanical switching means connectable in series therewith,an auxiliary current branch connectable in parallel with the corresponding load branch is provided for each phase to be switched,each auxiliary current branch comprises at least one switchover resistor and in series a further vacuum switching contact acting as an auxiliary contact,not only the load branches, but also the auxiliary current branches of the two load branches are connectable with a common load diverter,the vacuum switching contact, which acts as main contact, and the mechanical switching means arranged in series therewith of the first load branch and the vacuum switching ...

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Номер записи: 10
01-01-2015 дата публикации

Isolation adapter for a vehicle component test and test method for a vehicle component

Номер: US20150006024A1
Автор: Christian Pauli
Принадлежит: Audi AG

In the development of a vehicle component, provision may be made for a component to be tested during a test drive. Thus, the behavior of the vehicle component in the event of failure of a sensor, for example, can be tested. The aim is to enable systematic checking of a mode of operation of a vehicle component. An isolation adapter has a terminal for the vehicle component and a switching device that has a plurality of switch contacts to which a respective test circuit can be connected. An electrical connection between the terminal and at least one of the switch contacts can be produced by switching the switching device. Even during switching, there is always an electrical connection to at least one of the switch contacts. The isolation adapter may also have a display unit that mechanically detects a switching position of the switching device.

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Номер записи: 11
04-01-2018 дата публикации

Permanent magnet drive on-load tap-changing switch

Номер: US20180005753A1
Автор: Junqi DIAO
Принадлежит: Individual

A permanent magnet drive on-load tap-changing switch including a changing switch circuit that includes structurally identical odd- and even-numbered tap-changing circuits. The circuits include working contactors and dual-contact synchronous transition contactors made of primary and secondary contactors. The contactors each face directly a moving contactor, which are connected in parallel. A permanent magnet is fixed on each moving contactor and face directly on the other extremity thereof a moving contactor driving mechanism. The mechanism changes a force applied to the magnets, allowing the moving contactors to come into contact with or be separated from the working and transition contactors, thus implementing changeover from one tap to another tap. The switch is structurally simple and convenient to use, obviates the need for a high-speed mechanism, implements changing by the direct actions of the contactors, operates at high speed and reliably, and has a low failure rate and an extended service life.

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Номер записи: 12
03-01-2019 дата публикации

APPARATUS FOR ELECTRICALLY CONNECTING AT LEAST FOUR ELECTRICAL CONDUCTORS

Номер: US20190006081A1
Автор: Hoppe Jens, LOPPACH KARSTEN, Mueller Klaus, SCHLAGER JOHANN, WENDE THOMAS, WIMMER RENE MARTIN
Принадлежит:

An apparatus for electrically connecting at least four electrical conductors includes a connecting element and at least four shielding pipes, which are each provided for receiving at least one conductor. In order to enable a simple and economical connection, the connecting element forms pipe connection pieces and each connection piece is integrally joined or materially bonded to a respective shielding pipe. 112-. (canceled)13. An apparatus for electrically connecting at least four electrical conductors , the apparatus comprising:at least four shielding pipes each configured to receive at least one of the conductors; anda connecting element forming pipe connection pieces, each of said pipe connection pieces being connected to a respective one of said shielding pipes by a material-bonded connection.14. The apparatus according to claim 13 , wherein said connecting element and each of said shielding pipes are formed of an electrically conductive material.15. The apparatus according to claim 13 , which further comprises a paper insulation surrounding said connecting element claim 13 , said pipe connection pieces and said shielding pipes.16. The apparatus according to claim 13 , wherein each of said pipe connection pieces is soldered or welded to a respective one of said shielding pipes.17. The apparatus according to claim 13 , which further comprises a barrier system made of pressboard claim 13 , said shielding pipes and said connecting element being surrounded by said barrier system.18. The apparatus according to claim 17 , which further comprises a housing of a transformer or an inductor claim 17 , said connecting element and said shielding pipes being disposed in an oil bath inside said housing.19. The apparatus according to claim 18 , wherein said transformer or said inductor has windings claim 18 , and at least one of the conductors is electrically conductively connected a respective one of said windings.20. The apparatus according to claim 13 , wherein said pipe ...

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Номер записи: 13
21-01-2016 дата публикации

MICROFLUIDICS CONTROLLED TUNABLE COIL

Номер: US20160020017A1
Автор: BLOMQVIST Kim, Bower Chris, KORPINEN Pekka, POHJONEN Helena, Rouvala Markku
Принадлежит:

In some example embodiments, there may be provided an apparatus. The apparatus may include a chamber including a first cavity and a second cavity, wherein the chamber further includes a first fluid suspended in a second fluid; a first electrode adjacent to the first cavity; a second electrode adjacent to the second cavity; a third electrode configured to provide a common electrode to the first electrode and the second electrode; and at least one coil adjacent to at least one of the first cavity or the second cavity, wherein an inductance value of the coil is varied by at least applying a driving signal between the common electrode and the first electrode and/or the second electrode. Related methods, systems, and articles of manufacture are also disclosed.

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Номер записи: 14
19-01-2017 дата публикации

DRY TRANSFORMER LOAD SWITCH

Номер: US20170018376A1
Автор: Carlen Martin, TEPPER Jens, Weber Benjamin
Принадлежит:

A dry transformer load switch, and transformer having such switch, has a hollow insulation cylinder extending longitudinally about a virtual center axis and has a plurality of connection contacts arranged along the inner circumference thereof, and a radially oriented main contact arranged in the interior of the hollow insulation cylinder so as to be rotatable about the center axis and which, with a corresponding rotary movement, can be optionally electrically connected by the radially outer end thereof to one of the connection contacts. In a hollow-cylindrical space about the center axis that is defined by the radially inner and outer end of the main contact, there is a barrier shield, which can be rotated together with the main contact about the axis. 1. A dry transformer load switch , comprisinga hollow insulation cylinder which extends longitudinally about a virtual central axis, the hollow insulation cylinder including a plurality of connection contacts arranged along an inner circumference of the hollow insulation cylinder;a hollow cylindrical rotating body, which is arranged in an interior of the hollow insulation cylinder so as to be rotatable about the virtual central axis, the hollow cylindrical rotating body including a radially oriented main contact, the radially oriented main contact extending radially from an outer surface of the hollow cylindrical rotating body, and the radially oriented main contact, using a corresponding rotary movement, being configured to be alternatively electrically connectable via a radially outer end of the radially oriented main contact to one of the connection contacts; anda barrier shield, provided in a hollow cylindrical space about a further central axis, the further central axis being defined by a radially inner end and the radially outer end of the radially oriented main contact,wherein the barrier shield is in the form of a hollow cylindrical shield element, which can be rotated together with the radially oriented main ...

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Номер записи: 15
18-01-2018 дата публикации

PERMANENT MAGNET DRIVE ON-LOAD TAP-CHANGING SWITCH

Номер: US20180019044A1
Автор: DIAO Junqi
Принадлежит:

A permanent magnet drive on-load tap-changing switch including a changing switch circuit that includes an odd- and an even-numbered tap-changing circuit that are structurally identical. The tap-changing circuits include working contactors and dual-contact synchronous transition contactors made of primary contactors and secondary contactors. The working contactors and the dual-contact synchronous transition contactors directly face moving contactors. The moving contactors are connected in parallel to each other. Moving contactor permanent magnets are bijectively connected onto the moving contactors. The moving contactor permanent magnets directly face on the other extremity thereof a moving contactor driving mechanism. The moving contactor driving mechanism moves the permanent magnets. The switch is structurally simple and convenient to use, obviates the need for a highspeed mechanism, implements changing by direct actions of the contactors, operates at high speed and reliably, has a low failure rate, an extended service life, and value for widespread use. 1. A permanent magnet drive on-load tap-changing switch , comprising a changing switch circuit , wherein the changing switch circuit comprises an odd-numbered tap-changing circuit and an even-numbered tap-changing circuit that are structurally identical , the tap-changing circuits comprise working contactors and dual-contact synchronous transition contactors consisting of primary contactors and secondary contactors , the working contactors are connected to the primary contactors through trigger transmitters and transition resistors; the primary contactor of a tap-changing circuit is connected to the secondary contactor of another tap-changing circuit through a high-voltage thyristor; the trigger transmitter is configured to provide a trigger current to the high-voltage thyristor connected with the secondary contactor of the same tap-changing circuit; characterized in that: the working contactors and the dual- ...

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Номер записи: 16
22-01-2015 дата публикации

CONTROL TRANSFORMER

Номер: US20150022303A1
Автор: Dohnal Dieter, Viereck Karsten, Von Bloh Jochen
Принадлежит:

The invention relates to a control transformer that is designed as a phase-shifting transformer, wherein semiconductor switching components are provided for each phase at a regulating winding with several partial windings. According to the invention, an additional connecting line with an additional electronic switching component is provided in each phase wherein each of these connecting lines connects a module of the respective phase with the end of the main winding of the adjacent phase. 1. A control transformer for voltage regulation with semiconductor switching components having a main winding and a regulating winding with several partial windings for each phase , whereinfirst, second and third modules are provided per phase,each module comprises a respective partial winding of the regulating winding and on both sides thereof two bypass paths,each bypass path comprises a respective series connection of two semiconductor switching components,a respective center tap is provided between each two serially connected switching components of each bypass path,the partial windings have different numbers of turns,one of the two center taps of each module is connected with a center tap of the adjacent modules,the one remaining center tap of the first module is electrically connected with the load dissipation and the one remaining center tap of the third module is electrically connected with the end of the main winding of the control transformer,an additional connecting line is provided in each phase and an electronic switching component is inserted into each of the connecting lines,each of the connecting lines electrically connects the center tap of the third module of the corresponding phase with the end of the main winding of the respective adjacent phase,a further connecting line is provided in each phase with a further electronic switching component being inserted into each further connecting line, andeach of these further connecting lines connects the center tap of the ...

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Номер записи: 17
29-01-2015 дата публикации

ON-LOAD TAP CHANGER

Номер: US20150027989A1
Автор: Bieringer Alfred, Hammer Christian, PANKOFER Martin, Stocker Andreas, Strempel Rolf
Принадлежит:

The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption according to the preamble of the first patent claim. The general inventive concept lies in actuating both the selector contact unit and the switching means for uninterrupted load switching by means of a common motor drive without an energy store being connected therebetween. 1. An on-load tap changer for uninterrupted switching between different winding taps of a tapped transformer , whereinat least one selector contact unit with a respective plurality of fixed selector contacts, which are respectively electrically connected with the individual winding taps, is arranged along a line,the fixed selector contacts are actuatable by two longitudinally displaceable movable selector contacts, wherein for the uninterrupted switching two vacuum interrupters are provided for each phase,a motor drive for introducing a drive movement into the on-load tap changer is provided, andthe at least one selector contact unit and the switching means for the uninterrupted switching are so directly actuatable by the common motor drive that introduction of the drive movement of the motor drive into the at least one selector contact unit and the switching means for the uninterrupted switching takes place without interposition of a force-storing device.2. The on-load tap changer according to claim 1 , wherein rotation generated by the motor drive is transmissible by a transmission module to a threaded spindle engaged with a spindle nut provided at a center slide carriage so that a longitudinal displacement of the center slide carriage along guide rods can thereby be produced claim 1 ,the remaining slide carriages are operatively connected with the center slide carriage by way of a similarly longitudinally displaceable guide link, which is mechanically coupled with the center slide carriage, so that the remaining slide carriages in turn are so mechanically ...

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Номер записи: 18
29-01-2015 дата публикации

DISTRIBUTION TRANSFORMER FOR VOLTAGE REGULATION OF LOCAL DISTRIBUTION NETWORKS

Номер: US20150028978A1
Автор: Bieringer Alfred, Hammer Christian, PANKOFER Martin, Stocker Andreas, Strempel Rolf
Принадлежит:

The invention relates to a distribution transformer having a tap-changing device for no-break switching between different winding taps of a distribution transformer. The general inventive concept consists in actuating both the selector contact unit and the switching means for no-break load switching by means of a common motor drive without interposition of an energy store. 1. A distributing transformer for voltage regulation of local mains , comprisinga main winding and a regulating winding with a plurality of winding taps,a tap regulating device for uninterrupted switching between different winding taps of the distributing transformer, whereinat least one selector contact with a respective plurality of fixed selector contacts respectively electrically connected with the individual winding taps is arranged along a line,the fixed selector contacts are actuatable by two longitudinally displaceable movable selector contacts,for the uninterrupted switching two vacuum interrupters are provided for each phase,a motor drive for introducing a drive movement into the tap regulating device is provided, andthe at least one selector contact unit and the switching means for the uninterrupted switching are so directly actuatable by means of the common motor drive that the introduction of the drive movement of the motor drive into the at least one selector contact unit and the switching means for the uninterrupted switching takes place without interposition of a force-storing device.2. The distributing transformer according to claim 1 , whereinrotation generated by the motor drive is transmissible by means of a transmission module to a threaded spindle engaged with a spindle nut provided at a center slide carriage so that a longitudinal displacement of the center slide carriage along guide rods can thereby be produced, andthe remaining slide carriages are operatively connected with the center slide carriage by way of a similarly longitudinally displaceable guide link that is ...

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Номер записи: 19
10-02-2022 дата публикации

LOAD TRANSFER SWITCH FOR ON-LOAD TAP CHANGER, AND ON-LOAD TAP CHANGER

Номер: US20220044884A1
Автор: HEROLD Stefan, Hoepfl Klaus, Schmidt Eduard, Wilhelm Gregor, Wrede Silke, Wuersching Elke
Принадлежит:

A diverter switch is for an on-load tap-changer. The diverter switch includes: at least one vacuum interrupter; an actuating element, which is mechanically connected at a first end of the vacuum interrupter and has a roller at a second end; and an actuating body having a base body and having at least one cam. The vacuum interrupter is configured to be actuated via the actuating element as a result of the roller moving over the actuating body. At least one part of the cam has a higher strength than the base body. 1: A diverter switch for an on-load tap-changer , the diverter switch comprising:at least one vacuum interrupter;an actuating element, which is mechanically connected at a first end of the vacuum interrupter and has a roller at a second end; andan actuating body having a base body and having at least one cam, the vacuum interrupter is configured to be actuated via the actuating element as a result of the roller moving over the actuating body, and', 'at least one part of the cam has a higher strength than the base body., 'wherein2: The diverter switch as claimed in claim 1 , wherein the vacuum interrupter is configured to open due to a movement of the at least one part of the cam.3: The diverter switch as claimed in claim 1 , wherein the at least one part of the cam claim 1 , which is configured to move to open the vacuum interrupter claim 1 , is an opening flank.4: The diverter switch as claimed in claim 1 , wherein the base body consists of an insulating material.5: The diverter switch as claimed in claim 1 , wherein the at least one part of the cam consists of metal.6: The diverter switch as claimed in claim 1 , wherein:the actuating body has the base body and four cams, the four cams comprising the at least one cam,four vacuum interrupters, which comprise the vacuum interrupter, having a respective one of four actuating elements, which comprise the actuating element, andthe four vacuum interrupters are arranged in a circle around the actuating body.7: An ...

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Номер записи: 20
05-02-2015 дата публикации

On-load tap changer

Номер: US20150034462A1
Автор: Alfred Bieringer, Christian Hammer, Rolf Strempel
Принадлежит: Maschinenfabrik Reinhausen GmbH

The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption according to the preamble of the first patent claim. The general inventive concept lies in actuating both the selector contact unit and the switching means for uninterrupted load switching by means of a common motor drive without an energy store being connected therebetween.

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Номер записи: 21
02-02-2017 дата публикации

VARAINDUCTOR AND OPERATION METHOD THEREOF BASED ON MUTUAL CAPACITANCE

Номер: US20170032891A1
Автор: HSIEH Hsieh-Hung, HSUEH Fu-Lung, JOU Chewn-PU, LIU Yi-Hsuan
Принадлежит:

A varainductor includes a spiral inductor, a ground ring, and a floating ring. The floating ring is disposed between the ground ring and the spiral inductor and surrounds a ring portion of the spiral inductor. A switching element, controlled by a switch control signal, selectively electrically connects the ground ring to the floating ring. The switching element includes one or more switches. The one or more switches are controlled by one or more signals of the switch control signal to adjust the inductance level of the varainductor. 1. A varainductor comprising:a spiral inductor comprising a ring portion;a ground ring surrounding at least the ring portion of the spiral inductor;a floating ring disposed between the ground ring and the spiral inductor, wherein an inductance level of the varainductor is based on a mutual capacitance between the spiral inductor and the floating ring and a mutual capacitance between the floating ring and the ground ring; andan array of switches, the array of switches configured to selectively electrically connect the ground ring to the floating ring.2. The varainductor of claim 1 , wherein each switch of the array of switches is configured to receive a same switch control signal.3. The varainductor of claim 1 , wherein at least one switch of the array of switches is configured to receive a first switch control signal and at least another switch of the array of switches is configured to receive a second switch control signal claim 1 , wherein the second switch control signal is different from the first control signal.4. The varainductor of claim 1 , wherein the floating ring is located in a first tier of a monolithic three-dimensional integrated circuit (3DIC) claim 1 , the ground ring is located in a second tier of the monolithic 3DIC different from the first tier claim 1 , and the floating ring is configured to be selectively electrically connected to the ground ring through at least one inter-tier via.5. The varainductor of claim 1 , ...

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Номер записи: 22
01-05-2014 дата публикации

TRANSFORMER PROVIDED WITH A TAPS PANEL, AN ELECTRIC-INSULATION METHOD TAPS PANEL OF A DRY DISTRIBUTION TRANSFORMER, AND A TAPS PANEL FOR A DRY DISTRIBUTION TRANSFORMER

Номер: US20140118101A1
Автор: Navarro Martin Alsina
Принадлежит: Siemens Ltda.

The present invention relates to a dry distribution transformer comprising a housing (′), a coil (), a sealed compartment () and a taps panel () associated to the coil (). The taps panel () has an electrostatic shield () and is positioned inside the sealed compartment (), the sealed compartment () being filled with a solid dielectric material and protected by a cover (). One also describes an electric insulation method for a taps panel of a dry distribution transformer and taps panel for a dry distribution transformer filled with removable insulating resin. The coil () has a grounded () electrostatic shield (). 1. A dry distribution transformer comprising at least:{'b': 1', '1', '200, 'a housing (′), the housing (′) comprising inside it at least one coil ();'}{'b': 100', '100', '1', '100', '101, 'a sealed compartment (), the sealed compartment () being associated to the transformer () housing, the sealed compartment () being provided with a cavity ();'}{'b': 110', '200, 'a taps panel () being associated to the coil ();'}{'b': 110', '101', '101, 'the distribution transformer being characterized in that the taps panel () is positioned inside the cavity (), the cavity () being filled with a removable solid dielectric material.'}2101120. A dry distribution transformer according to claim 1 , characterized in that the cavity () is protected by a cover ().3101111112113112111102103102. A dry distribution transformer according to and claim 1 , characterized in that the cavity () comprises at least one fixation element for the turn () claim 1 , a linking bridge () claim 1 , a fixation element () for the connection bridge claim 1 , capable of associating the connection bridge () to the fixation element of the turn () claim 1 , a fixation plate () and a sealing () claim 1 , operatively associated to the fixation plate ().4102100130103. A dry distribution transformer according to to claim 1 , characterized in that the fixation plate () is associated to the internal portion of ...

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Номер записи: 23
01-02-2018 дата публикации

ELECTRIC SYSTEM WITH CONTROL WINDING AND METHOD OF ADJUSTING SAME

Номер: US20180033547A1
Автор: Saveliev Anatoli, STERZ Oliver
Принадлежит:

The invention relates to a method for changing the active number of turns of a control winding () in an electric system (). The control winding is coupled to an AC voltage network for a specified period duration T, is designed for a specified nominal current strength IN, and comprises a first and a second tap (). The control winding is switched from a first continuous current state, in which a load current flows from the first tap to a load discharge line () via a first main path and the second tap is separated from the load discharge line, to a second continuous current state, in which the load current flows from the second tap to the load discharge line via a second main path and the first tap is separated from the load discharge line, according to a specified switch sequence plan. The switch sequence plan specifies that starting from the first continuous current state, the first tap is connected or remains connected to the load discharge line via a first transition path, and the first main path is separated in a switch step a; in a switch step b, the second tap is connected to the load discharge line via a second transition path such that a circuit current iK flows through the transition paths on the basis of the stage voltage between the taps; in a switch step c, the first tap is separated from the load discharge line; and in a switch step d, the second tap is connected to the load discharge line via the second main path; wherein at at least one specified test time tT between switch steps a and c, a test is carried out to determine whether the first main path is separated; a current strength IL of the load current is ascertained; and the test time tT depends on the load current strength IL. 2. The method according to claim 1 , wherein the testing comprises{'b': '1', 'detecting the current i flowing in the first main path and comparing it with a predetermined detection threshold value; and'}evaluating the test result as positive if the threshold value is fallen ...

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Номер записи: 24
31-01-2019 дата публикации

INDUCTOR DEVICE

Номер: US20190035544A1
Автор: Liu Chih-Hua, Yen Hsiao-Tsung
Принадлежит:

An inductor device includes at least two wires and at least two switches. Each of the at least two wires includes an opening, and the openings are disposed correspondingly to each other. One of the at least two switches is coupled to two terminals of the opening of one of the at least two wires. Another one of the at least two switches is coupled to one terminal of the opening of the one of the at least two wires and one terminal of the opening of another one of the at least two wires in an interlaced manner. If the one of the at least two switches is turned on, one of the at least two wires forms an inductor; if another one of the at least two switches is turned on, both of the at least two wires form the inductor. 1. An inductor device , comprising:at least two wires, wherein each of the at least two wires comprises an opening, and the openings are disposed correspondingly to each other; andat least two switches, wherein one of the at least two switches is coupled to two terminals of the opening of one of the at least two wires, another one of the at least two switches is coupled to one terminal of the opening of the one of the at least two wires and one terminal of the opening of another one of the at least two wires in an interlaced manner;wherein if the one of the at least two switches is turned on, the one of the at least two wires forms an inductor; if the another one of the at least two switches is turned on, both of the at least two wires form the inductor.2. The inductor device of claim 1 , wherein another terminal of the opening of the one of the at least two wires is coupled to another terminal of the opening of the another one of the at least two wires.3. The inductor device of claim 2 , wherein the at least two wires comprises:a first wire, comprising a first opening, wherein the first opening comprises a first terminal and a second terminal; anda second wire, comprising a second opening, wherein the second opening comprises a first terminal and a ...

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Номер записи: 25
09-02-2017 дата публикации

VARIABLE INDUCTOR

Номер: US20170040103A1
Автор: Yamaguchi Koichi
Принадлежит: MURATA MANUFACTURING CO., LTD.

First and second coils are disposed coaxially with a gap provided therebetween and are configured to mutually cancel out magnetic fields provided thereby. A receptacle portion that defines a space traversing at least a portion of a magnetic flux produced by the coils is provided, and a magnetic powder is contained in the receptacle portion so as to occupy a portion of the space. The magnetic powder moves within the space, and this movement produces a change in the magnetic flux. This change in the magnetic flux appears in the form of a change in the inductance value. 1. A variable inductor , comprising:at least one coil that produces a magnetic flux;a receptacle portion that defines a space traversing at least a portion of the magnetic flux produced by the at least one coil; anda magnetic powder contained in the receptacle portion so as to occupy a portion of the space,wherein the magnetic powder is movable within the space, and this movement produces a change in the magnetic flux.2. The variable inductor according to claim 1 ,wherein the space defined by the receptacle portion includes a first region in which a magnetic field provided by the at least one coil is relatively strong and a second region in which the magnetic field is relatively weak, andwherein the magnetic powder is movable between the first region and the second region.3. The variable inductor according to claim 1 ,wherein the at least one coil includes first and second coils disposed coaxially with a gap provided therebetween,wherein the first coil and the second coil are configured to mutually cancel out magnetic fields provided thereby, andwherein at least a portion of the space is located between the first and second coils.4. The variable inductor according to claim 1 ,wherein the magnetic powder is coated with a resin having an electrostatic property,wherein the variable inductor further includes an electric field generating electrode for applying a voltage so as to generate an electric field ...

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Номер записи: 26
06-02-2020 дата публикации

ON-LOAD TAP CHANGING APPARATUS AND ON-LOAD TAP CHANGING SYSTEM

Номер: US20200043650A1
Автор: Chigiri Takeshi, Eguchi Naoki, Miyamoto Yasushi, TAKANO Kei
Принадлежит:

An on-load tap changing apparatus includes a first switching unit connected to a first tap of a transformer provided in a power system and switching power supplied from the first tap, a first impedance changing unit connected in series with the first switching unit and increasing an impedance when the first switching unit executes a switching operation, a second switching unit connected to a second tap of the transformer and switching power supplied from the second tap, and a second impedance changing unit connected in series with the second switching unit and increasing an impedance when the second switching unit executes a switching operation. The on-load tap changing apparatus can suppress an arc at the time of switching, reduce deterioration of a switching unit, and have excellent durability. 1. An on-load tap changing apparatus comprising:a first switching unit connected to a first tap of a transformer provided in a power system, and switching a power supplied from the first tap;a first impedance changing unit connected in series with the first switching unit, and increasing an impedance when the first switching unit executes a switching operation;a second switching unit connected to a second tap of the transformer, and switching a power supplied from the second tap; anda second impedance changing unit connected in series with the second switching unit, and increasing an impedance when the second switching unit executes a switching operation.2. The on-load tap changing apparatus according to claim 1 , further comprising a drive unit driving the first switching unit claim 1 , the second switching unit claim 1 , the first impedance changing unit claim 1 , and the second impedance changing unit in conjunction claim 1 ,wherein the drive unit switches the first switching unit and the second switching unit in conjunction with each other, and changes the impedance of the first impedance changing unit and the impedance of the second impedance changing unit in ...

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Номер записи: 27
15-02-2018 дата публикации

DETACHABLE TRANSFORMER

Номер: US20180047501A1
Автор: Chang Chen-Feng, LEE YU-HSIANG
Принадлежит:

A detachable transformer includes a first bobbin, a primary winding, a second bobbin, a secondary winding and a magnetic core set. The magnetic core set peripherally surrounds the first bobbin and the second bobbin and is inserted into them. A top and a bottom of the first bobbin respectively have a first winding recess and an installation recess. The primary winding is arranged in the first winding recess. A side of the installation recess has a first opening connecting with an external space. A top of the second bobbin has a second winding recess. The secondary winding is arranged in the second winding recess. The second bobbin is arranged in the installation recess through the first opening, whereby the first bobbin and the second bobbin form a detachable connection. 1. A detachable transformer comprising:a first bobbin with a center thereof penetrated with a first through hole, and a top and a bottom of said first bobbin respectively have a first winding recess and an installation recess, and said first winding recess surrounds said first through hole, and a side of said installation recess has a first opening connecting with an external space;a primary winding arranged in said first winding recess;a second bobbin with a center thereof penetrated with a second through hole, and a top of said second bobbin has a second winding recess surrounding said second through hole, and said second bobbin is arranged in said installation recess through said first opening, and said first through hole connects with said second through hole;a secondary winding arranged in said second winding recess; anda magnetic core set peripherally surrounding said first bobbin and said second bobbin and extending to said first through hole and second through hole.2. The detachable transformer according to claim 1 , wherein said primary winding is formed by conduction wires.3. The detachable transformer according to claim 1 , wherein a partial edge of said bottom of said first bobbin ...

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Номер записи: 28
13-02-2020 дата публикации

LONGITUDINAL VOLTAGE REGULATION AT THE LINE TERMINALS OF A PHASE SHIFTING TRANSFORMER

Номер: US20200052486A1
Автор: Derigs Oliver, Juchem Kevin, Wichert Marko
Принадлежит:

A phase shifting transformer for poly-phase alternating current includes source side terminals, load side terminals, an exciting unit, and a series unit. The exciting unit includes further coils that are magnetically coupled to primary coils and to the secondary coils of the exciting unit to provide further voltages. The further coils are connected in series between the source side terminals and the series unit, so that the voltages at the load terminals are combinations of the quadrature voltages and the further voltages with the source voltages, thus modifying the voltage phase displacement between the source side terminals and the load side terminals. 1. A phase shifting transformer for poly-phase alternating current (AC) with source side terminals and with load side terminals , the phase shifting transformer comprising:an exciting unit comprising a first transformer with primary coils connected between pairs of the source side terminals and with secondary coils to provide quadrature voltages; anda series unit comprising a second transformer with primary coils connected in series between the source side terminals and the load side terminals and with secondary coils to receive the quadrature voltages, thus providing a voltage phase displacement between the source side terminals and the load side terminals;wherein the exciting unit comprises further coils that are magnetically coupled to the primary coils and to the secondary coils of the exciting unit to provide further voltages, with the further coils connected in series between the source side terminals and the series unit, so that the voltages at the load terminals are combinations of the quadrature voltages and the further voltages with the source voltages, thus modifying the voltage phase displacement between the source side terminals and the load side terminals.2. The phase shifting transformer according to claim 1 , wherein in the exciting unit claim 1 , the further coils are magnetically coupled to the ...

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Номер записи: 29
05-03-2015 дата публикации

TAP CHANGER WITH AN IMPROVED DRIVE SYSTEM

Номер: US20150061806A1
Автор: Elder Joshua Tyler, Elick Robert Alan, Geibel David Matthew, Teising William James
Принадлежит: ABB TECHNOLOGY AG

An on-load tap changer is provided having a plurality of modules, each of which is operable to change taps in a winding of a transformer. A transmission shaft is connected to the modules and is operable upon rotation to effectuate tap changes in the windings. A servo motor rotates the transmission shaft. The servo motor includes a feedback device operable to generate a feedback signal containing information relating to the position of the motor shaft. A servo drive is connected to the servo motor to receive the feedback signal. The servo drive uses the feedback signal to determine and store a total angular displacement of the motor shaft. The servo drive uses the feedback signal and the total angular displacement of the motor shaft to control the operation of the servo motor. 1. An on-load tap changer for changing taps in a transformer winding , the tap changer comprising:a tap change module connected to the transformer winding and comprising a bypass switch assembly, a vacuum interrupter assembly and a selector switch assembly; a motor shaft connected to the tap change module and operable, upon rotation, to cause the tap change module to perform a sequence of operations that effectuate a tap change;', 'a feedback device operable to generate a feedback signal containing information relating to the position of the motor shaft; and, 'a servo motor comprisinga servo drive connected to the servo motor to receive the feedback signal, the servo drive using the feedback signal to determine and store the total angular displacement of the motor shaft, the servo drive using the feedback signal and the total angular displacement of the motor shaft to control the operation of the servo motor.2. The on-load tap changer of claim 1 , wherein the servo drive stores a maximum angular displacement and wherein the servo drive automatically stops the rotation of the motor shaft when the total angular displacement of the motor shaft reaches the maximum angular displacement.3. The on- ...

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Номер записи: 30
16-03-2017 дата публикации

System and method for reducing power consumption in a power supply circuit

Номер: US20170075368A1
Автор: Laurence Gonano, Ron CAMPEANU
Принадлежит: ECRTech Holdings Pty Ltd

A system for reducing power consumption in a power supply circuit including: a transformer including: a core; a first winding including a first end and a second end of a first wire wound on the core; a second winding including a first end and a second end of a second wire, wherein the second wire has a larger cross-section than the first wire and the second end of the first wire is connected to the first end of the second wire; an input electrically connecting the first and second windings to the power supply circuit; and an output for connecting to a load; and a controller connected to the transformer for controlling an output voltage at the output, wherein the output voltage is less than a supply voltage at the input, to reduce the power consumption of the load.

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Номер записи: 31
12-06-2014 дата публикации

Electrical Current Transformer for Power Distribution Line Sensors

Номер: US20140160820A1
Автор: McKinley Michael Wayne
Принадлежит: GRID SENTRY LLC

An electrical current transformer for installation upon a power distribution line including a generally annular, split core and a secondary winding. The secondary winding includes a first winding portion, wound with a first winding polarity about the split core, and a second winding portion, wound with a second, opposite winding polarity about the split core, and a tap. The transformer further includes first and second rectifiers, electrically connecting a tap output to terminals of the first and second winding portion opposite the tap, respectively, and a tap control for controlling the tap output, where the tap is both electrically connectable to the output to provide an additive connection and electrically isolatable from the output to cause a subtractive connection. The tap control controls the tap output in response to a condition sensed in the powered circuit. Self-cancellation may be achieved by using windings having an equal number of turns. 1. An electrical current transformer for installation upon a power distribution line , the electrical current transformer comprising:a generally annular, split current transformer core having a secondary winding including a first winding portion, wound with a first winding polarity about the split core, and a second winding portion, wound with a second, opposite winding polarity about the split core, and an intermediate tap.a first rectifier, electrically connecting an output of the intermediate tap to a terminal of the first winding portion opposite the intermediate tap;a second rectifier, electrically connecting the output of the intermediate tap to a terminal of the second winding portion opposite the intermediate tap; andan intermediate tap control automatically controlling the output of the intermediate tap in response to a condition sensed in a circuit powered by the first and second rectifiers, wherein the intermediate tap is both electrically connectable to the output to provide an additive connection between the ...

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Номер записи: 32
23-03-2017 дата публикации

ELECTRICAL COMPONENT

Номер: US20170084387A1
Автор: BOEHM MATTHIAS, BREHM HOLGER SIEGMUND, SCHMITT DANIEL
Принадлежит:

An electrical component includes a conductor having a plurality of conductor sections. The conductor sections are electrically short-circuited. The short circuit is at least partially eliminated when the temperature of the component exceeds a threshold or limit value. An electrical circuit including the component and a method for increasing the inductance of an electrical component having a conductor, are also provided. 124-. (canceled)25. An electrical component comprising:a conductor including a plurality of conductor sections;said conductor sections having an electrical short circuit; andsaid short circuit being at least partially eliminated when a temperature of the component exceeds a limit value.26. The component according to claim 25 , wherein said short circuit is at least partially eliminated when the temperature of the component exceeds the limit value due to an electric current flowing through the component.27. The component according to claim 25 , wherein:said conductor has a first end and a second end;a first electrical connection of the component is connected to said first end of said conductor; anda second electrical connection of the component is connected to said second end of said conductor.28. The component according to claim 25 , wherein said conductor sections are turns of a winding.29. The component according to claim 25 , wherein an inductance of the component is increased when said short circuit is at least partially eliminated.30. The component according to claim 25 , wherein said conductor sections are uninsulated and said conductor sections bear against one another claim 25 , causing said conductor sections to be electrically short-circuited.31. The component according to claim 30 , which further comprises an expansion material disposed between said conductor sections claim 30 , said expansion material having a volume increasing when the temperature of the component exceeds the limit value.32. The component according to claim 25 , wherein ...

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Номер записи: 33
02-04-2015 дата публикации

ON-LOAD TAP CHANGER

Номер: US20150091684A1
Автор: PANKOFER Martin, Stocker Andreas
Принадлежит:

The present invention relates to an on-load tap changer for uninterrupted switching between different winding taps of a tapped transformer according to the first claim. The general inventive concept is that of arranging the on-load tap changer on the underside of the transformer cover by means of a gear module. 1. An on-load tap changer for uninterrupted switching between different winding taps of a tapped transformer , whereinat least one selector contact unit with a respective plurality of fixed selector contacts, which are respectively electrically connected with the individual winding taps, is arranged along a line,the fixed selector contacts are actuatable by two longitudinally displaceable movable selector contacts, wherein for the uninterrupted switching two vacuum interrupters are provided for each phase,a motor drive for introducing a drive movement into the on-load tap changer is provided, andthe entire load changeover switch is arranged by means of a transmission module at the underside of a transformer cover.2. The on-load tap changer according to claim 1 , wherein the transmission module comprises a flange-like sealing module.3. The on-load tap changer according to claim 1 , whereina rotational movement generated by the motor drive is transmissible by means of a transmission module to a threaded spindle engaged with a spindle nut provided at a center slide carriage so that a longitudinal displacement of the center slide carriage along guide rods can thereby be produced,the remaining slide carriages are operatively connected with the center slide carriage by way of a similarly longitudinally displaceable guide link that is mechanically coupled with the center slide carriage, so that the remaining slide carriages in turn are so mechanically coupled with the center slide carriage by way of the guide link that not only the selector contact units, but also the switching means for the uninterrupted load switching are thereby simultaneously actuatable.4. The ...

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Номер записи: 34
19-06-2014 дата публикации

Variable Inductor for LC Oscillator

Номер: US20140167867A1
Автор: Ahmed Rizwan, Roberts Curtiss, Tsai Chi Taou
Принадлежит: Intel IP Corporation

A variable inductor is disclosed. In accordance with some embodiments of the present disclosure, a variable inductor may comprise a single-turn conductor comprising a first inductor terminal, a second inductor terminal, a first base portion extending from the first inductor terminal to a first intersection location, a second base portion extending from the second inductor terminal to a second intersection location, and a switched portion extending from the first intersection location to the second intersection location, and a switch comprising a first conductive terminal coupled to the first intersection location and a second conductive terminal coupled to the second intersection location. 1. A variable inductor , comprising: a first inductor terminal;', 'a second inductor terminal;', 'a first base portion extending from the first inductor terminal to a first intersection location;', 'a second base portion extending from the second inductor terminal to a second intersection location; and', 'a switched portion extending from the first intersection location to the second intersection location; and, 'a single-turn conductor comprisinga switch comprising a first conductive terminal coupled to the first intersection location and a second conductive terminal coupled to the second intersection location.2. The variable inductor of claim 1 , wherein the single-turn conductor is formed on a single layer of conductive material.3. The variable inductor of claim 2 , wherein no portion of the single-turn conductor formed on the single layer of conductive material overlaps a route formed on a second layer of conductive material.4. The variable inductor of claim 1 , wherein the single-turn conductor is electromagnetically isolated.5. The variable inductor of claim 1 , wherein the switch comprises a transistor.6. The variable inductor of claim 1 , wherein the length of the switched portion is greater than the combined length of the first base portion and the second base portion.7. ...

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Номер записи: 35
21-03-2019 дата публикации

TRANSFORMER SYSTEM WITH DYNAMIC CONTROL

Номер: US20190088410A1
Автор: Goodman John M.
Принадлежит:

The regulation, power-handling capability, and reliability of a transformer is improved by a connected switching network which changes the effective numbers of turns and effective wire size of the windings synchronously during each cycle of an applied AC input voltage. 1. A transformer system comprising:a magnetic core;one or more windings, wherein each of the one or more windings comprise one or more sub-windings configured with a plurality of connection points;a switching network connected to the plurality of connection points, wherein the switching network is controllably operative at one or more times during each quarter-cycle of an AC input voltage to select different effective numbers of turns in each winding;whereby the transformer system transforms the AC input voltage to an AC output voltage which is regulated to a desired AC output voltage.2. The transformer system as in wherein at least one of said one or more windings has one or more taps.3. The transformer system as in wherein at least one of said one or more windings comprises a series connection of segments.4. The transformer system as in wherein at least one of said one or more windings comprises a series-connected set of M segments claim 3 , wherein each of the segments of the series-connected set of segments each of which comprise N sub-windings claim 3 , wherein the number of turns per sub-winding in successive members of the series-connected set of M segments is equal to a constant K times successive non-negative integer powers (0 claim 3 , 1 claim 3 , 2 claim 3 , . . . claim 3 , M−1) of the number N.5. The transformer system as in wherein at least one of the sub-windings also comprises a permanently connected snubber circuit.6. The transformer system as in also comprises a switching controller claim 1 , wherein the switching controller is operative to select a chosen configuration of an effective number of turns in each of the one or more windings claim 1 , wherein the switching controller is ...

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Номер записи: 36
21-03-2019 дата публикации

DISTRIBUTED ELECTROSTATIC DISCHARGE PROTECTION FOR CHIP-TO-CHIP COMMUNICATIONS INTERFACE

Номер: US20190089150A1
Автор: Gharibdoust Kiarash, Tajalli Armin, WALTER Christoph
Принадлежит:

Directing an electrostatic discharge received via a conductive pad through a multi-tap inductor having a signal path connecting the conductive pad to a signal processing circuit, the multi-tap inductor having a sequence of taps located at positions along a signal path from the conductive pad to the signal processing circuit, distributing the electrostatic discharge as a plurality of currents through the sequence of taps, wherein magnitudes of the plurality of currents are controlled by current-distribution resistors connected to respective taps of the sequence of taps, and dissipating the plurality of currents using a plurality of electrostatic discharge (ESD) circuits connected to the plurality of current-distribution resistors. 1. An apparatus comprising:a conductive pad connected to a wire of a multi-wire bus;a multi-tap inductor connected to the conductive pad and a signal processing circuit, the multi-tap inductor having a sequence of taps located at positions along a signal path from the conductive pad to the signal processing circuit, the multi-tap inductor configured to distribute an electrostatic discharge as a plurality of currents through the sequence of taps;a plurality of current-distribution resistors, each current-distribution resistor connected to a respective tap of the sequence of taps of the multi-tap inductor, the plurality of current-distribution resistors configured to control magnitudes of the plurality of currents; anda plurality of electrostatic discharge (ESD) circuits, each ESD circuit connected to a respective current-distribution resistor, the plurality of ESD circuits configured to dissipate the plurality of currents.2. The apparatus of claim 1 , wherein each current-distribution resistor of the plurality of current-distribution resistors has an impedance value associated with a position of the respective tap.3. The apparatus of claim 2 , wherein the impedance value for a first current-distribution resistor is larger than the impedance ...

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Номер записи: 37
26-06-2014 дата публикации

TAP CHANGER HAVING A VACUUM INTERRUPTER ASSEMBLY WITH AN IMPROVED DAMPER

Номер: US20140176273A1
Автор: Brasher Jon Christopher, Elick Robert Alan
Принадлежит: ABB TECHNOLOGY AG

An on-load tap changer is provided having a vacuum interrupter that is actuated by a shaft of an actuation assembly. A damper dampens the movement of the shaft. The damper provides more dampening when the shaft is closing the vacuum interrupter than when the shaft is opening the vacuum interrupter. The damper includes a housing at least partially defining an interior chamber into which the shaft extends. A piston with openings extending therethrough is disposed in the interior chamber and is secured to the shaft so as to be movable therewith. A blocking structure is operable to block the openings in the piston when the shaft is closing the vacuum interrupter and to un-block the openings in the piston when the shaft is opening the vacuum interrupter. 1. An on-load tap changer , comprising:a vacuum interrupter assembly for immersion in a dielectric fluid, the vacuum interrupter assembly comprising:(a.) a vacuum interrupter with contacts;(b.) an actuation assembly having a shaft connected to the contacts of the vacuum interrupter and operable upon movement to open and close the contacts; and a housing having a wall with an opening and defining an interior chamber into which the shaft extends, the interior chamber being in communication with the opening;', 'a piston disposed in the interior chamber and secured to the shaft so as to be movable therewith, the piston having one or more first openings and one or more second openings, the one or more first openings being larger than the one or more second openings;', 'a blocking structure disposed in the interior chamber such that the piston is disposed between the opening and the blocking structure, the blocking structure having a body through which the shaft movably extends, the blocking structure being movable between being proximate and distal to the piston, wherein when the blocking structure is proximate to the piston, the blocking structure closes the one or more first openings, but not the one or more second openings ...

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Номер записи: 38
07-04-2016 дата публикации

Resonant Transformer

Номер: US20160099103A1
Автор: Mashikian Matthew S., Szatkowski Andrzej Pawel
Принадлежит: Instrument Manufacturing Company

Exemplary embodiments of the present disclosure are directed to resonant transformers (or reactors) and coil arrangements associated with resonant transformers. The coil arrangements can include a grounding coil configured to generate a net-zero induced voltage between a first end of the grounding coil and a second end of the grounding coil layer, and one or more step-up coil layers formed by one or more layers of pressure tape, insulating materials, and wire wrapped to form coils about a portions of a split magnetic core. The split magnetic core can include a first core segment and a second core segment, where one of the core segments is disposed within a main housing and one of the core segments is disposed external to the main housing. A gap between the first and second core segments can be manipulated to control an inductance of the resonant transformer. 1. A transformer comprising:a main housinga split magnetic core having a first core segment and a second core segment, the first core segment being disposed within the main housing and the second core segment being disposed external to the main housing; andat least one coil wrapped around the first core segment,wherein a gap between the first and second core segments is manipulated to adjust an inductance of the split magnetic core.2. The transformer of claim 1 , further comprising an inert gas disposed within the housing claim 1 , the inert gas being maintained under pressure.3. The transformer of claim 1 , wherein the second core segment is exposed to atmospheric pressure.4. The transformer of claim 1 , wherein the second core segment is moveable with respect to the first core segment.5. The transformer of claim 4 , further comprising an actuator that is operative to move the second core segment with respect to the first.6. The transformer of claim 4 , further comprising a non-magnetic member configured to be disposed between the second core segment and the first core segment to limit a movement of the second ...

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Номер записи: 39
05-04-2018 дата публикации

DC-DC CONVERTER, SWITCHING IC, AND INDUCTOR DEVICE

Номер: US20180097438A1
Автор: Iijima Koichiro
Принадлежит:

A DC-DC converter includes an inductor device with an inductance value that is switched between a first inductance and a second inductance larger than the first inductance in a case where a load includes a first load and a second load heavier than the first load and a switching circuit electrically connected to the inductor device. The inductor device includes a first coil, a second coil, and a switching element with a resistance value that is controlled in accordance with the load. A circuit in which the second coil and the switching element are electrically connected in series and the first coil are electrically connected in parallel. 1. A DC-DC converter that generates an adjusted output voltage from an input voltage and supplies the adjusted output voltage to a load , the DC-DC converter comprising:an inductor device including an inductance value that is switched between a first inductance and a second inductance larger than the first inductance in a case where the load includes a first load and a second load heavier than the first load, the inductor device including a first coil, a second coil, and a switching element with a conductive state and a non-conductive state that are controlled in accordance with the load; anda switching circuit electrically connected to the inductor device; whereina circuit in which the second coil and the switching element are electrically connected in series and the first coil are electrically connected in parallel.2. The DC-DC converter according to claim 1 , whereinthe switching circuit includes a switching IC; andthe switching element is located in the switching IC.3. The DC-DC converter according to claim 1 , whereinthe switching circuit includes a switching IC; andthe switching element is separate from the switching IC.4. The DC-DC converter according to claim 1 , wherein the first coil and the second coil are provided in a multilayer board in which a plurality of substrate layers are laminated.5. The DC-DC converter according ...

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Номер записи: 40
23-04-2015 дата публикации

TRANSFORMER

Номер: US20150109085A1
Автор: Carlen Martin, CORNELIUS Frank, Steinmetz Thorsten, Weber Benjamin, Zhang Jiahua
Принадлежит: ABB TECHNOLOGY AG

A transformer and a method of manufacturing a transformer are disclosed. The transformer can include a transformer core with at least three core limbs which are arranged in parallel with respect to one another and perpendicular to corner points of an area spanned by a polygon, and wherein axial end regions of each of the at least three core limbs transition into a respective yoke segment arranged transversely with respect to the axial end regions. Main windings can be arranged around each of the at least three core limbs in a hollow-cylindrical winding region. A magnetic cross section of a respective core limb can be greater than a magnetic cross section of the respective yoke segment. Additional windings can be electrically connected to a respective main winding and can be arranged around each of the respective yoke segments. 1. A transformer , comprising:a transformer core with at least three core limbs which are arranged in parallel with respect to one another and perpendicular to corner points of an area spanned by a polygon, and wherein axial end regions of each of the at least three core limbs transition into a respective yoke segment arranged transversely with respect to the axial end regions;main windings arranged around each of the at least three core limbs in a hollow-cylindrical winding region, and wherein a magnetic cross section of a respective core limb is greater than a magnetic cross section of the respective yoke segment; andadditional windings which are electrically connected to a respective main winding and which are arranged around each of the respective yoke segments.2. The transformer according to claim 1 , wherein the transformer core has an area of an equilateral triangle.3. The transformer according to claim 1 , wherein the main windings e formed by a respective flat ribbon conductor.4. The transformer according to claim 1 , wherein the additional windings are formed by a respective flat ribbon conductor.5. transformer according to claim 1 , ...

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Номер записи: 41
29-04-2021 дата публикации

DUAL MOTOR SYSTEM

Номер: US20210123442A1
Автор: Bastien Ryan M., Belley Richard A., Coupart Eric, Schrader John G.
Принадлежит: NIDEC MOTOR CORPORATION

A dual motor system includes a first motor providing a lower speed range and a second motor providing a higher speed range, wherein the motors are coaxially arranged and aligned on and drive a common shaft, and a motor control system controlling the speed of the first motor and engaging the second motor as needed. The first motor is a variable speed motor providing a lower two-thirds of a full speed range, and the second motor is an induction motor providing the upper one-third in the form of one or more discrete fixed speeds. The system may include a transformer including a first winding tap which provides a first higher speed, and a second winding tap which provides a second higher speed. The system may also include a flow control system for automatically controlling the speed of the motors for particular applications, such as flow control in a pool. 1. A dual motor system comprising:a first motor of a first type including a first stator and a first rotor providing a lower speed range under a first type of control;a second motor of a second type including a second stator and a second rotor providing a higher speed range under a second type of control;a common shaft, wherein the first and second motors are coaxially arranged and aligned on a common axis defined by the common shaft and configured to drive the common shaft; anda motor control system configured to control the first motor and engage the second motor as needed to control a speed of the common shaft.2. The dual motor system of claim 1 , wherein the first motor is a variable speed synchronous motor claim 1 , the lower speed range is a lower two-thirds of a full speed range claim 1 , and the first type of control is a variable speed drive.3. The dual motor system of claim 2 , wherein the lower speed range is up to between two thousand eight hundred and three thousand revolutions per minute.4. The dual motor system of claim 1 , wherein the second motor s an asynchronous induction motor claim 1 , the higher ...

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Номер записи: 42
20-04-2017 дата публикации

COIL COMPONENT

Номер: US20170110243A1
Автор: KAWASHIMA Hiroshi, Yamaguchi Takayuki
Принадлежит: SUMIDA CORPORATION

A coil component has a core part composing a closed magnetic path through which a closed loop of a magnetic flux passes, the magnetic flux being generated by two coils A, B that are arranged in parallel, and generate a magnetic field, and the core part has a pair of I-type base cores A, B facing each other, and a pair of coupling core parts C, D. The coupling core parts C, D are each formed by linearly aligning three unit coupling cores A to F, and each of these cores A to F is formed into a configuration in which a column-shaped projection is provided on a core body, and a two-stage gap including a small gap and a large gap is to be formed mutually in a space in the adjacent unit cores A, B, and A to F by the configuration. 1. A coil component comprising a coil and a core part composing a closed magnetic path through which a closed loop of a magnetic flux generated by the coil passes , whereinthe coil component is configured in such a manner that the core part is formed of a plurality of unit cores, the plurality of unit cores are magnetically and sequentially coupled, and the closed magnetic path is formed as a whole, and a gap is formed by being provided between at least one set of the magnetically coupled adjacent unit cores, anda projection is provided on an end surface of at least one of the adjacent two unit cores with interposing the gap therebetween, and the gap is formed of at least two types of gaps including a small gap and a large gap.2. The coil component according to claim 1 , wherein the small gap is formed by a leading end surface region of the projection and an end surface facing the region of the adjacent unit core claim 1 , and the large gap is formed by an end surface region in which the projection is not provided and an end surface facing the region of the adjacent unit core.3. The coil component according to claim 1 , wherein the core part is formed into a square-shaped closed magnetic path by facing two channel-shaped unit cores each other.4. ...

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Номер записи: 43
19-05-2016 дата публикации

Wireless charging system

Номер: US20160137072A1
Автор: Byeong Seob Song, Gyu Yeong Choe, In Yong Yeo, Tae Jong Ha, Woo Young Lee
Принадлежит: Hyundai Motor Co

A wireless charging system of a vehicle includes: a transmitting coil module including a plurality of transmitting coils; and a receiving coil module including a plurality of receiving coils receiving power by electronic resonance with the plurality of transmitting coils. The plurality of transmitting coils have a winding structure which is formed by a conductive wire causing a direction of a magnetic field generated by any one of the plurality of transmitting coils different from a direction of a magnetic field generated by a transmitting coil directly adjacent to the one transmitting coil by making a current flow in the plurality of transmitting coils.

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Номер записи: 44
01-09-2022 дата публикации

Method for carrying out a switchover of at least two switching means for equipment, and drive system for at least two switching means in equipment

Номер: US20220277906A1
Автор: Eduard Zerr, Klaus IXMEIER, Sebastian Schmid
Принадлежит: Maschinenfabrik Reinhausen GmbH

A method carries out a switchover of a first switch or at least one second switch for equipment. The method includes receiving, by a controller, a switching signal; selecting, by the controller, the first switch or at least the second switch for switchover on the basis of the switching signal; querying, by the controller, at least one parameter of the first switch or the at least second switch; checking a locking condition on the basis of the at least one queried parameter for the first switch or a locking condition for the at least second switch; and carrying out the switchover by the selected first switch or the at least second switch based upon the corresponding locking condition being met.

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Номер записи: 45
07-08-2014 дата публикации

Dry-Type Transformer

Номер: US20140218151A1
Автор: Nogués Barrieras Antonio, Roy Martín Carlos
Принадлежит: ABB TECHNOLOGY AG

A dry-type transformer comprises a winding with a tapping zone, the tapping zone being the zone wherein at least two connections can be made, allowing to change the number of turns of the winding and thus change the turn ratio of the transformer, and with at least a first non-tapping zone, wherein the winding comprises a conductor having, in at least part of the tapping zone, a first width in the axial direction of the winding, and having, in at least part of the first non-tapping zone, a second width in the axial direction of the winding, the first width being smaller than the second width. 1. Dry-type transformer comprising a winding with a tapping zone , the tapping zone being the zone wherein at least two connections can be made , allowing to change the number of turns of the winding and thus change the turn ratio of the transformer , and with at least a first non-tapping zone , wherein the winding comprises a conductor having , in at least part of the tapping zone , a first width in the axial direction of the winding , and having , in at least part of the first non-tapping zone , a second width in the axial direction of the winding , the first width being smaller than the second width.2. Dry-type transformer according to claim 1 , wherein the conductor of the winding is made of at least two materials with different conductivity.3. Dry-type transformer according to claim 2 , wherein the conductor of the winding in at least part of the tapping zone is made of a first material and the conductor of at least part of the rest of the winding is made of a second material.4. Dry-type transformer according to claim 2 , wherein the two materials are copper and aluminum.5. Dry-type transformer according to claim 4 , wherein the conductor of the winding in at least part of the tapping zone is made of copper claim 4 , and the conductor of the winding in at least part of the non-tapping zone is made of aluminum.6. Dry-type transformer according to claim 1 , wherein a length ...

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Номер записи: 46
03-06-2021 дата публикации

Current control apparatus

Номер: US20210165433A1
Автор: Jonathan Michael Schaar, Tiefu Zhao
Принадлежит: Eaton Intelligent Power Ltd

An apparatus for a load tap changer includes a first primary winding electrically connected to a first contact, the first contact configured to connect to one of a plurality of taps in a load tap changer; a second contact, the second contact configured to connect to one of the plurality of taps in the load tap changer; a magnetic core; and a control circuit including: a secondary winding configured to magnetically couple to the first primary winding and the magnetic core; and an electrical network electrically connected to the secondary winding, the electrical network being configured to prevent magnetic saturation of the magnetic core during switching of the first or second contact.

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Номер записи: 47
19-05-2016 дата публикации

ON-LOAD TAP CHANGER, METHOD FOR INSTALLING A LOAD TRANSFER SWITCH INSERT IN THE ON-LOAD TAP CHANGER, AND KEROSENE DRAIN SCREW

Номер: US20160141120A1
Автор: Hoepfl Klaus, Wrede Silke, Zwirglmaier Hubert
Принадлежит:

The invention relates to an on-load tap changer (), comprising a load transfer switch insert () and an oil suction pipe (), and to a method for installing a load transfer switch insert () by means of the switching tube () and the oil suction pipe (). The oil suction pipe () is arranged centrally, and coaxially along an axis (A) of the on-load tap changer (), within the switching tube (). The on-load tap changer () has a kerosene drain screw (), which is attached in a bottom () of the on-load tap changer () in such a way that the kerosene drain screw is arranged coaxial to the axis (C) of the oil suction pipe (), to the axis (B) of the switching tube (), and to the axis (A) of the on-load tap changer (). A bearing ring () is acted upon on one side and radially to the axis (A) of the on-load tap changer () by an elastic element () in such a way that the switching tube () and the oil suction pipe, which both interact () with the bearing ring () in a form-closed manner, are centered about the axis (A) of the on-load tap changer. 1. An on-load tap changer comprising:a switching tube;an oil suction pipe arranged centrally and coaxially along an axis inside the switching tube;{'b': '15', 'a kerosene drain screw so mounted in a base of the on-load tap changer that it is coaxial with an axis of the oil suction pipe, the axis of the switching tube () and an axis of the on-load tap changer; and'}a bearing ring so acted on by a resilient element at one side and radially with respect to the axis of the on-load tap changer that the switching tube and the oil suction pipe both mechanically positively cooperate with the bearing ring and are centered about the axis of the on-load tap changer.2. The on-load tap changer according to claim 1 , further comprising:a counter-bearing is mounted at the base of the on-load tap changer and receives the resilient element cooperating with the bearing ring.3. The on-load tap changer according to claim 1 , wherein the resilient element is a ...

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Номер записи: 48
26-05-2016 дата публикации

System and method for optimizing wind turbine operation

Номер: US20160146191A1
Автор: Anthony Michael Klodowski, Igor Berroteran Gil, Werner Gerhard Barton
Принадлежит: General Electric Co

System and methods for optimizing operation of a wind turbine are disclosed. In one aspect, the method also includes determining, via a converter controller of a power converter, a tap position of a tap changer configured between the power grid and a primary winding of a transformer. Another step includes calculating, via the converter controller, a primary voltage of the primary winding as a function of the tap position. The method also includes implementing, via the converter controller, a control action if the primary voltage or a measured secondary voltage of a secondary winding of the transformer is outside of a predetermined voltage range.

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Номер записи: 49
09-05-2019 дата публикации

Inductance adjusting device

Номер: US20190139691A1
Автор: Kazuya Tsurusaki, Yasuhiro Mayumi, Yohei EGUCHI
Принадлежит: Eguchi High Frequency Co Ltd

Coil surfaces of a first coil (1) and a second coil (3) are parallel in a state of having an interval therebetween. When the first coil (1) rotates, a combined inductance by the first coil (1) and the second coil (3) changes.

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Номер записи: 50
09-05-2019 дата публикации

Differential-Coil, Solenoid Type, High Voltage Series Reactor

Номер: US20190139699A1
Автор: SLEVA Anthony F., SR. Jerry J, Wolfe
Принадлежит: Prescient Transmission Systems, Inc.

Differential-coil, high-voltage series reactors respond quickly and reliably to current surges in electrical power systems (such as surges caused by shorted or downed lines). The reactors prevent voltage collapse and eliminate the possibility of wide area blackouts (major metropolitan areas or entire states). 1. An electromechanical short-circuit protector comprising:a first terminal and a second terminal, said terminals connected electrically so that a voltage applied across the terminals causes a current to flow from the first terminal to the second terminal;a first conductive coil connected to the first terminal, said first conductive coil having a first number of turns and generating a first magnetic field when the current flows therethrough;a second conductive coil connected to the second terminal, said second conductive coil having a second number of turns and generating a second magnetic field when the current flows therethrough, said second conductive coil electrically connected to said first conductive coil; anda moveable element that is affected by the first magnetic field and the second magnetic field, whereinan impedance between the first terminal and the second terminal assumes a first value when the current is below a predetermined level, andthe impedance between the first terminal and the second terminal assumes a second value when the current is above a predetermined level.2. The electromechanical short-circuit protector of wherein a first winding direction of the first conductive coil is different from a second winding direction of the second conductive coil.3. The electromechanical short-circuit protector of wherein the first magnetic field opposes and partially cancels the second magnetic field.4. The electromechanical short-circuit protector of wherein the first number of turns is different from the second number of turns.5. The electromechanical short-circuit protector of claim 1 , further comprising:a third conductive coil connected to at least ...

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Номер записи: 51
24-05-2018 дата публикации

SWITCH APPARATUS, TEST APPARATUS AND METHOD FOR OPERATING A SWITCH APPARATUS FOR A MEASURING DEVICE FOR A TRANSFORMER

Номер: US20180143236A1
Автор: Atlas Dmitry, Feustel Felix, Freiburg Michael, Schedler Horst
Принадлежит: OMICRON Electronics GmbH

A switch apparatus () for a measuring device () for a transformer comprises controllable switch means () which are configured to short-circuit respectively assigned terminals () of one of a plurality of windings of the transformer. A test apparatus () comprising the switch apparatus () and a method () for operating the switch apparatus () are also disclosed. With apparatuses () and methods () according to the exemplary embodiments of the invention, the work effort, time expenditure and errors and inaccuracies can be reduced through an automated testing of transformers. 1. A switch apparatus for a measuring device for a transformer , comprising:a first controllable switch device, which is configured to short-circuit respectively assigned terminals of one of a plurality of windings of the transformer; anda second controllable switch device which is configured to interconnect a plurality of the windings of the transformer in series.220.-. (canceled)21. The switch apparatus as claimed in further comprising a first further controllable switch device claim 1 , which is configured to supply a first electrical magnitude to be provided by the measuring device as a test signal to a respectively assigned terminal of one of the plurality of windings.220. The switch apparatus as claimed in wherein the first electrical magnitude is a voltage in the range between V up to a few thousand kilovolts.23. The switch apparatus as claimed in wherein the first further controllable switch means are controllable by a control signal to be provided by the measuring device.24. The switch apparatus as claimed in further comprising a second further controllable switch device claim 1 , which is configured to draw a second electrical magnitude to be detected by the measuring device as a measurement signal from a respectively assigned terminal of one of the plurality of windings.25. The switch apparatus as claimed in wherein the second further controllable switch device is controllable by a control ...

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Номер записи: 52
15-09-2022 дата публикации

SYSTEM AND METHOD FOR CONTROLLING A 3-PHASE TRANSFORMER DEVICE

Номер: US20220294374A1
Автор: Grøset Vidar
Принадлежит: EM-Energy Solutions AS

The embodiments herein relate to a system () for controlling a 3-phase transformer device (, T, T, T). The system () comprises the 3-phase transformer device (, T, T, T) which comprises a primary side and an adjustable secondary side. The system () comprises at least one voltage sensor (S, S, S) adapted to sense voltage at the primary side. The system () comprises a current sensor (S) adapted to sense current through the adjustable secondary side, and a resistor (R) connected in series with the current sensor (S) at the adjustable secondary side. The system comprises a controller () adapted to obtain sensor data indicating the sensed voltage and the sensed current, and to control a parameter associated with the adjustable secondary side of the 3-phase transformer device (, T, T, T) based on the obtained sensor data. 1. A system for controlling a 3-phase transformer device , the system comprising:the 3-phase transformer device comprising a primary side and an adjustable secondary side;at least one voltage sensor adapted to sense voltage at the primary side of the 3-phase transformer device with reference to ground;a current sensor adapted to sense current through the adjustable secondary side of the 3-phase transformer device,a resistor connected in series with the current sensor at the adjustable secondary side of the 3-phase transformer device;a controller adapted to:obtain sensor data indicating the sensed voltage from the at least one voltage sensor and the sensed current from the current sensor, and tocontrol a parameter associated with the adjustable secondary side of the 3-phase transformer device based on the obtained sensor data.2. The system according to claim 1 , comprising;at least one input sensor adapted to sense input parameters which are input to the system,wherein the obtained sensor data further indicates the sensed input parameters from the at least one input sensor.3. The system according to claim 1 , comprising:at least one position sensor ...

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Номер записи: 53
01-06-2017 дата публикации

SWITCHING CIRCUIT WITH TWO LOAD TAP CHANGERS, ELECTRICAL ASSEMBLY WITH SUCH A SWITCHING CIRCUIT, AND USE THEREOF

Номер: US20170154738A1
Автор: BAEUML Gerhard, SHEIKO Stanislav, Shen Dazhong, SPAETH Matthias
Принадлежит:

A circuit () for an electrical plant () with a first and a second control winding () comprises 1. A circuit for an electrical plant with a first and a second control winding , comprisinga first on-load tap changer with a first diverter terminal and three first switch terminals, of which at least two can be connected with associated first taps of the first control winding; anda second on-load tap changer with a second diverter terminal and three second switch terminals of which at least two can be connected with associated second taps of the second control winding the second diverter terminal being connected with the first diverter terminal or with a first switch terminal not associated with the first tap.3. The circuit according to claim 1 , whereinat least one of the on-load tap changers comprises a preselector with two preselector terminals and a base terminal.4. The circuit according to claim 3 , whereinat least one of the preselectors is constructed as a reverser;the preselector terminals can be connected with the ends of the control winding that is associated with the respective on-load tap changer; andthe base terminal can be connected with a first plant terminal of the plant or with an end of a main winding that is inductively coupled with this control winding.5. The circuit according to claim 3 , whereinat least one of the preselectors is constructed as a coarse selector;the base terminal can be connected with an end of the control winding that is associated with the respective on-load tap changer; andthe preselector terminals can be connected with the ends of a coarse winding that is inductively coupled with this control winding.6. The circuit according to claim 1 , whereinat least two on-load tap changers are so coupled that they switch in the same sense and synchronously.7. The circuit according to claim 1 , whereinthe first and second on-load tap changers are combined in common switching apparatus or are realized or formed by common switching apparatus.8 ...

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Номер записи: 54
15-06-2017 дата публикации

SWITCHED ENERGY RESONANT POWER SUPPLY SYSTEM

Номер: US20170169941A1
Автор: III James F., Murray
Принадлежит:

Apparatus and associated methods relate to a switching network that (1) receives energy from an input source that magnetically excites an output winding, (2) stores some of that energy in a series capacitance while delivering power to a resistive load during a first excitation cycle portion, and (3) then injects some of the stored energy back to the input source by injecting current into a tap of the output winding while delivering power to the resistive load and during a second excitation cycle portion. In an illustrative example, the first excitation cycle portion may include a first positive or negative quarter cycle of the excitation waveform. The second excitation cycle portion may include a second positive or negative quarter cycle of the excitation waveform. The energy injected back to the input source during the second excitation cycle portion may advantageously provide, for example, an assisting torque to a prime mover. 1. A method comprising:providing a magnetic flux path to couple energy between an input source and an output winding;providing a charging terminal and a return terminal at opposite ends of the output winding, and an injection terminal at a tap between the charging terminal and the return terminal;exciting the magnetic flux path with a periodic flux waveform alternately having a positive half-cycle and a negative half-cycle, wherein the positive half-cycle is formed of temporally adjacent first and second quarter cycles, and the negative half-cycle is formed of temporally adjacent third and fourth quarter cycles;during the first quarter cycle, providing a positive charging current path from the charging terminal to the return terminal through a series capacitance and a resistive load to transfer energy from the flux waveform to the resistive load;interrupting the charging current path at a predetermined point in the positive half-cycle;during the second quarter cycle, providing a positive injection current path from the return terminal to the ...

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Номер записи: 55
21-06-2018 дата публикации

Voltage Regulator System and Method of Use

Номер: US20180173256A1
Автор: Dauzat Thomas Ambrose
Принадлежит:

Embodiments of the disclosure pertain to a voltage regulator system having a voltage regulation controller and a transformer assembly. The transformer assembly includes a coil winding, a multi-contact tap arrangement connected to the coil winding, and a multifurcated tap changer system that includes a first tap changer having a contactor element which makes contact with a first contact of the multi-contact tap arrangement when the controller provides a positioning stimulus based on sensing a voltage deviation from a nominal output voltage of the voltage regulator system. The multifurcated tap changer system further includes a second tap changer that is mechanically ganged to the first tap changer and includes another contactor element arranged to automatically make contact with a second contact of the multi-contact tap arrangement when the contactor element of the first tap changer makes contact with the first contact of the multi-contact tap arrangement. 1. A voltage regulator system comprising:a voltage regulation controller comprising a voltage sensing element; and a coil winding;', 'a first multi-contact tap arrangement connected to the coil winding, the first multi-contact tap arrangement comprising a first set of contacts;', 'a second multi-contact tap arrangement connected to the coil winding, the second multi-contact tap arrangement comprising a second set of contacts; and', a first tap changer comprising a first contactor element that makes contact with a first contact in the first set of contacts when the voltage regulation controller provides to the transformer assembly, a first positioning stimulus that is based at least in part on the voltage sensing element sensing a first voltage deviation from a nominal output voltage of the voltage regulator system, and makes contact with a first contact in the second set of contacts when the voltage sensing element senses a second voltage deviation from the nominal output voltage; and', 'a second tap changer that ...

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Номер записи: 56
21-06-2018 дата публикации

Voltage Regulator System and Method of Use

Номер: US20180173257A1
Автор: Dauzat Thomas Ambrose
Принадлежит:

Embodiments of the disclosure pertain to a voltage regulator system having a voltage regulation controller and a transformer assembly. The transformer assembly includes a coil winding, a multi-contact tap arrangement connected to the coil winding, and a multifurcated tap changer system that includes a first tap changer having a contactor element which makes contact with a first contact of the multi-contact tap arrangement when the controller provides a positioning stimulus based on sensing a voltage deviation from a nominal output voltage of the voltage regulator system. The multifurcated tap changer system further includes a second tap changer that is mechanically ganged to the first tap changer and includes another contactor element arranged to automatically make contact with a second contact of the multi-contact tap arrangement when the contactor element of the first tap changer makes contact with the first contact of the multi-contact tap arrangement. 1. A voltage regulator system comprising:a voltage regulation controller; anda split-coil transformer assembly;wherein the voltage regulation controller comprises a voltage sensing element; a first coil winding;', 'a first tap changer;', 'a second coil winding; and', 'a second tap changer;, 'wherein the split-coil transformer assembly, which is coupled to the voltage regulation controller, compriseswherein the first coil winding comprises a first set of taps;wherein the first tap changer comprises a first contactor element that makes contact with a first tap in the first set of taps when the voltage regulation controller provides to the split-coil transformer assembly, a first positioning stimulus that is based at least in part on the voltage sensing element sensing a first voltage deviation from a nominal output voltage of the voltage regulator system;wherein the second coil winding is electrically coupled in parallel with the first coil winding to split a load current provided by the voltage regulator system to a ...

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Номер записи: 57
18-09-2014 дата публикации

VARAINDUCTOR, VOLTAGE CONTROLLED OSCILLATOR INCLUDING THE VARAINDUCTOR, AND PHASE LOCKED LOOP INCLUDING THE VARAINDUCTOR

Номер: US20140266344A1
Автор: HSIEH Hsieh-Hung, HSUEH Fu-Lung, JOU Chewn-PU, LIU Yi-Hsuan
Принадлежит: Taiwan Semiconductor Manufacturing Company, Ltd.

A varainductor including a signal line disposed over a substrate. The varainductor further includes a first ground plane over the substrate, the first ground plane disposed on a first side of the signal line, and a second ground plane over the substrate, the second ground plane disposed on a second side of the signal line opposite the first side of the signal line. The varainductor further includes a first floating plane over the substrate, the first floating plane disposed between the first ground plane and the signal line, and a second floating plane over the substrate, the second floating plane disposed between the second ground plane and the signal line. The varainductor further includes an array of switches, the array of switches is configured to selectively connect the first ground plane to the first floating plane, and to selectively connect the second ground plane to the second floating plane. 1. A varainductor comprising:a signal line over a substrate, the signal line having a length extending in a first direction and a width extending in a second direction perpendicular to the first direction;a first ground plane over the substrate, the first ground plane disposed on a first side of the signal line, wherein the first ground plane has a length in the first direction and a width in the second direction;a second ground plane over the substrate, the second ground plane disposed on a second side of the signal line opposite the first side of the signal line in the second direction, wherein the second ground plane has a length in the first direction and a width in the second direction;a first floating plane over the substrate, the first floating plane disposed between the first ground plane and the signal line, wherein the first floating plane has a length in the first direction and a width in the second direction;a second floating plane over the substrate, the second floating plane disposed between the second ground plane and the signal line, wherein the second ...

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Номер записи: 58
02-07-2015 дата публикации

SMART VOLTAGE REDUCTION AND REVERSE POWER OPERATING MODE DETERMINATION FOR LOAD TAP CHARGING TRANSFORMERS AND VOLTAGE REGULATORS

Номер: US20150185743A1
Автор: McFetridge Robert, Yalla Murty
Принадлежит: Beckwith Electric Co., Inc.

The present disclosure relates to a system for using load tap changing (LTC) transformers and voltage regulators to more accurately reduce the voltage in a power transmission system. It further relates to a system for determining the operating mode for LTC transformers and VRs during reverse power flow. Corresponding methods are also disclosed. The various components of the present system, and the manner in which they interrelate, are more fully described hereinafter. 1. A system for more accurately reducing applied voltages comprising:a power distribution system, the distribution system including a power generator and a load, the power generator delivering an applied voltage at a predetermined level to the load;the power distribution system including a load tap changing (LTC) transformer or voltage regulator, the LTC transformer or voltage regulator including tap selector switches, the tap selector switches selectively engaging a contact to thereby lower the applied voltage, the tap selector switches reducing the applied voltage in set increments;a LTC controller for controlling the operation of the tap selector switches, the LTC controller establishing an upper band edge voltage, a lower band edge voltage, and a bandcenter that is between the upper and lower band edge voltages, the LTC controller functioning to keep the applied voltage between the upper and lower band edge voltages via the operation of the tap selector switches;means for temporarily disabling the upper band edge voltage and temporarily designating the bandcenter as the upper band edge voltage whereby the tap selector switches operate in set increments to reduce the applied voltage to a level that is between the redesigned bandcenter and the lower band edge.2. The system as described in wherein the means for temporarily disabling can be used to disable the lower band edge voltage and temporarily designate the bandcenter as the lower band edge voltage whereby the tap selector switches operate in set ...

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Номер записи: 59
28-05-2020 дата публикации

LOAD TRANSFER SWITCH FOR AN ON-LOAD TAP CHANGER AND CONTINUOUS MAIN SWITCH AND DISCONNECTING SWITCH FOR SAME

Номер: US20200168420A1
Автор: Hammer Christian, Schmidt Eduard, Wilhelm Gregor, Wrede Silke
Принадлежит:

A switch includes a diverter contact; a primary fixed contact; and a secondary fixed contact. The switch additionally includes a primary movable contact configured to be pivoted, relative to the diverter contact and the primary fixed contact, about a pivot axis between a first end position and a second end position. In the first end position, the primary movable contact bears by a first contact point against the diverter contact and by a second contact point against the primary fixed contact. The switch further includes a secondary movable contact configured to be pivoted, relative to the diverter contact and the secondary fixed contact, about the pivot axis between a first end position and a second end position. In the first end position the secondary movable contact bears by a third contact point against the diverter contact and by a fourth contact point against the secondary fixed contact. 1. A switch , comprisinga diverter contact;a primary fixed contact;a secondary fixed contact;a primary movable contact configured to be pivoted, relative to the diverter contact and the primary fixed contact, about a pivot axis between a first end position and a second end position, wherein in the first end position the primary movable contact bears by a first contact point against the diverter contact and by a second contact point against the primary fixed contact, and wherein in the second end position the primary movable contact is separated from the diverter contact and the primary fixed contacts; anda secondary movable contact configured to be pivoted, relative to the diverter contact and the secondary fixed contact, about the pivot axis between a first end position and a second end position, wherein in the first end position the secondary movable contact bears by a third contact point against the diverter contact and by a fourth contact point against the secondary fixed contact, and wherein in the second end position the secondary movable contact is separated from the ...

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Номер записи: 60
30-06-2016 дата публикации

Method Of Manufacturing An Electromagnetic Induction Device And An Electromagnetic Induction Device

Номер: US20160189859A1
Автор: Larsson Tommy
Принадлежит:

A method of manufacturing an electromagnetic induction device with On-Load Tap Changer. The method includes: a) providing an electromagnetic core with windings, b) suspending an OLTC insulation barrier from the electromagnetic induction device by a suspension, wherein the OLTC interface barrier arrangement is arranged to act as a barrier between an electromagnetic core housing and an OLTC, and wherein the OLTC interface barrier arrangement is provided with a first set of electrical connections arranged to be connected to the windings and a second set of electrical connections arranged to be connected to the OLTC, c) connecting the first set of electrical connections to the windings, and d) subjecting the windings and the OLTC interface barrier arrangement to a drying process. 1. A method of manufacturing an electromagnetic induction device with On-Load Tap Changer (OLTC) capabilities , wherein the method comprises:a) providing an electromagnetic core with windings,b) suspending an OLTC interface barrier from the electromagnetic induction device by means of suspension means, wherein the OLTC interface barrier arrangement is arranged to act as a barrier between an electromagnetic core housing and an OLTC unit, and wherein the OLTC interface barrier arrangement is provided with a first set of electrical connections arranged to be connected to the windings and a second set of electrical connections arranged to be connected to the OLTC unit,c) connecting the first set of electrical connections to the windings, andd) subjecting the windings and the OLTC interface barrier arrangement to a drying process.2. The method as claimed in claim 1 , including the steps of e) manoeuvring the suspension means such that the OLTC interface barrier arrangement is moved to the electromagnetic core housing.3. The method as claimed in claim 2 , including the steps of fixating the OLTC interface barrier arrangement to the electromagnetic core housing.4. The method as claimed in claim 3 , ...

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Номер записи: 61
25-09-2014 дата публикации

TUNABLE INDUCTOR

Номер: US20140285298A1
Автор: Kolomichenko Georgiy, Liang Edward C.
Принадлежит: MCV Technologies, Inc.

A tunable inductor includes a first wire coil having a first terminal lead, and a second wire coil having a second terminal lead that is arranged and oriented in the same direction as the first terminal lead. The tunable inductor further includes a connecting bridge connecting the first wire coil with the second wire coil opposite the first and second terminal leads, such that the first wire coil and second wire coil are arranged in series and spaced side-by-side separated by a space. The tunable inductor further includes a mechanical tuning mechanism coupled with the connecting bridge, to provide a force down onto or a force pulling up the connecting bridge, and to respectively decrease the space between the first wire coil and the second wire coil to increase inductance, or increase the space between the first wire coil and the second wire coil to decrease inductance. 1. A tunable inductor comprising:a first wire coil having a first terminal lead;a second wire coil having a second terminal lead that is arranged and oriented in the same direction as the first terminal lead;a connecting bridge connecting the first wire coil with the second wire coil opposite the first and second terminal leads, such that the first wire coil and second wire coil are arranged in series and spaced side-by-side separated by a space; anda mechanical tuning mechanism coupled with the connecting bridge, the mechanical tuning mechanism providing a force down onto or to pull up the connecting bridge, to respectively decrease the space between the first wire coil and the second wire coil to increase inductance, or increase the space between the first wire coil and the second wire coil to decrease inductance.2. The tunable inductor in accordance with claim 1 , wherein the mechanical tuning mechanism includes a stepper motor.3. The tunable inductor in accordance with claim 2 , further comprising a computer to control the stepper motor.4. The tunable inductor in accordance with claim 1 , further ...

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Номер записи: 62
20-06-2019 дата публикации

VARIABLE INDUCTOR AND INTEGRATED CIRCUIT USING THE VARIABLE INDUCTOR

Номер: US20190189342A1
Автор: Chiang Ching-Wen, KUAN Yen-Cheng, LIANG CHIA-JEN, YU CHIEN-TE
Принадлежит:

A variable inductor comprises a primary conductor, a first secondary conductor and one or more switch. The primary conductor has a first node and a second node, wherein the first node is used to connect a first external component and the second node is used to connect a second external component. The first secondary conductor magnetically couples to the primary conductor. The one or more switch has two sides connected to the first secondary conductor, respectively. The first secondary conductor is formed a single-loop structure with two or more changeable current paths which are operated by the states of the one or more switch. An integrated circuit using the variable inductor is also introduced. 1. A variable inductor comprising:a primary conductor having a first node and a second node, the first node being used to connect first external component, the second node being used to connect second external component;a first secondary conductor, magnetically coupling to the primary conductor;a first switch having two sides connected to the first secondary conductor, respectively;wherein the first secondary conductor is formed a single-loop structure with two changeable current paths which are operated by the states of the first switch and corresponded to different equivalent inductances.2. The variable inductor of further comprises a second switch having two sides connected to the first secondary conductor claim 1 , respectively claim 1 , and the first secondary conductor is formed a single-loop structure with four changeable current paths which are operated by the states of the first and second switches.3. (canceled)4. The variable inductor of claim 1 , wherein the first node is disposed on one end of the primary conductor and the second node is disposed on another end of the primary conductor.5. The variable inductor of claim 1 , wherein the variable inductor is integrated in a radio frequency integrated circuit.6. The variable inductor of claim 5 , wherein the first ...

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Номер записи: 63
22-07-2021 дата публикации

ON-LOAD TAP CHANGER HEAD AND ON-LOAD TAP CHANGER HAVING AN ON-LOAD TAP CHANGER HEAD

Номер: US20210225583A1
Автор: Atmanspacher Joerg, GOSS Michael, Schlepp Klaus, Stempfhuber Johannes
Принадлежит:

An on-load tap changer head includes: a first region for an insulating fluid of the on-load tap changer to flow; a second region separated from the first region by a wall; and a detector for detecting an increased flow speed of the insulating fluid. The detector includes: a flow flap in the first region configured to tilt from a defined flow speed of the insulating fluid from a first position to a second position; a first magnet secured to the flap such that in the second position of the flow flap, the first magnet is in an immediate vicinity of the wall; a second magnet in the second region in the immediate vicinity of the wall; and a switch in the second region that is operationally coupled to the second magnet such that tilting over of the flow flap from the first position to the second position actuates the switch. 1. An on-load tap changer head for an on-load tap changer , the on-load tap changer head comprising:a first region, which is in the on-load tap changer head through which an insulating fluid of the on-load tap changer can flow;a second region separated from the first region by a wall; and a flow flap, which is arranged in the first region and is configured to tilt due to a defined flow speed of the insulating fluid from a first position to a second position;', 'a first coupling magnet, which is secured to the flap such that in the second position of the flow flap, is the first coupling magnet is disposed in an immediate vicinity of the wall;', 'a second coupling magnet, which is in the second region in the immediate vicinity of the wall; and', 'a switch, which is in the second region and which is operationally coupled to the second coupling magnet such that tilting over of the flow flap from the first position to the second position actuates the switch., 'a detector configured to detect an increased flow speed of the insulating fluid, the detector comprising2. The on-load tap changer head according to claim 1 , wherein the second region is in the on- ...

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Номер записи: 64
27-06-2019 дата публикации

Monitoring A Transformer Comprising A Tap Changer

Номер: US20190195933A1
Автор: Abeywickrama Nilanga, Bengtsson Tord
Принадлежит:

The invention is concerned with a monitoring device, method and computer program product for monitoring a transformer having a tap changer. The transformer has at least two magnetically coupled windings and a tap changer having impedance elements and a changeover switch configured to gradually pass the impedance elements when changing between two tap changer positions during a tap change operation. The method is performed in the monitoring device and including: obtaining waveforms of measured power transmission properties recorded at the first and second transformer sides, processing the recorded waveforms for obtaining at least one waveform (Ploss) representing a tap change operation, and extracting information indicative of the performance of the tap change from the at least one waveform that represents the tap change operation. 11214. A monitoring device for monitoring a transformer comprising a tap changer , said transformer having at least two magnetically coupled windings arranged at a first and a second transformer side and the tap changer having impedance elements (R , R) and a switch configured to gradually pass the impedance elements when changing between two tap changer positions (P , P) during a tap change operation , the monitoring device comprising:a waveform analyzer operative toobtain waveforms of measured power transmission properties (Iin, Uin, Iout, Uout) recorded at the first and second transformer sides, said measured power transmission properties being currents and/or voltages,process the recorded waveforms for obtaining at least one waveform representing a tap change operation, andextract information (ODT, AMP) indicative of the health of the tap change from said at least one waveform that represents the tap change operation,wherein the extracted information includes an operation duration time (ODT) covering at least a part of the tap change operation and/or an amplitude (AMP) of said at least one waveform representing the tap change operation ...

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Номер записи: 65
30-07-2015 дата публикации

SYSTEM AND METHOD FOR OPERATING AN ON-LOAD TAP CHANGER

Номер: US20150213971A1
Автор: BAERTHLEIN Eva-Maria, Gupta Rohit Kumar, Panosyan Ara, Schramm Simon Herbert, Schroeder Stefan, Wijekoon Piniwan Thiwanka Bandara
Принадлежит:

A system for operating an on-load tap changer (OLTC) includes a plurality of legs that include mechanical switches. At least one leg switches from a first to a second tap of the OLTC on receipt of a tap change signal. At least one mechanical switch is activated to establish an electrical connection between one of the first and the second tap and a power terminal of the OLTC. Further, the system includes semiconductor switches that are parallel to the mechanical switches and when activated electrically couple one of the first and the second tap and the power terminal. The system includes a processing unit that selectively activates and deactivates the mechanical and semiconductor switches in such a way that electrical contact is maintained between at least one of the taps and the power terminal during the transition of at least one leg from the first tap to the second tap. 1. A system for operating an on-load tap changer , the system comprising:a plurality of legs, at least one of which is triggered to switch from a first tap to a second tap of the on-load tap changer on receipt of a tap change signal, wherein each leg includes at least one mechanical switch, and wherein when at least one mechanical switch of at least one of the plurality of legs is switched on an electrical connection is established between one of the first and the second tap and a power terminal of the on-load tap changer; anda plurality of semiconductor switches, each semiconductor switch being placed parallel to the mechanical switches and when activated provide electrical connection between one of the first and the second tap and a power terminal of the on-load tap changer; anda processing unit configured to selectively activate and deactivate the mechanical switches and the semiconductor switches in such a way that electrical contact is maintained between at least one of the taps and the power terminal during the transition of at least one leg from the first tap to the second tap without ...

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Номер записи: 66
21-07-2016 дата публикации

SWITCHING SYSTEM WITH PRESELECTOR

Номер: US20160211089A1
Автор: Albrecht Wolfgang, BAEUML Gerhard, Bieringer Alfred, HAUSMANN Martin, Hurm Christian, KALTENBORN Uwe, Saveliev Anatoli, Stocker Andreas, STROF Thomas, ZERR Eduard
Принадлежит:

The invention relates to a step switch, comprising a preselector and a fine selector. The invention is characterized in that the step switch has a connection () between the pre-selector and the fine selector (), at least one coupling switch () being arranged in said connection. A pre-selector can be switched in a largely gas-free manner by means of said switchable connection with the aid of the fine selector. 1. A tap changer comprising a preselector and a fine selector , wherein the tap changer comprises an electrical connection having at least one coupling switch between the preselector and the fine selector.2. The tap changer according to claim 1 , wherein the preselector comprises at least one movable switching element and two switch contacts that are contactable by the switching element claim 1 , the electrical connection being connected with the switching element.3. The tap changer according to or claim 1 , wherein the preselector comprises at least one switching element mechanically or electrically coupled with at least one switching element of the coupling switch.4. The tap changer according to claim 3 , wherein the coupling is such that the switching element of the preselector is set to a non-connected neutral setting after closing of the switching element of the coupling switch.5. The tap changer according to claim 3 , wherein the coupling is such that the switching element of the coupling switch opens after closing of the switching element of the preselector.6. The tap changer according to claim 1 , wherein the coupling switch is actuatable by a transmission arranged between the load changeover switch and fine selector.7. The tap changer according to claim 1 , wherein the fine selector contacts are constructed as snap switches or contain a vacuum interrupter.8. The tap changer according to wherein the tap changer is constructed as a rotary switch.9. The tap changer according to claim 1 , wherein the fine selector is constructed as load selector.10. The ...

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Номер записи: 67
21-07-2016 дата публикации

Switching system with preselector

Номер: US20160211090A1
Автор: Alfred Bieringer, Anatoli Saveliev, Andreas Stocker, Christian Hurm, Eduard Zerr, Gerhard BAEUML, Martin Hausmann, Thomas Strof, Uwe Kaltenborn, Wolfgang Albrecht
Принадлежит: Maschinenfabrik Reinhausen GmbH

The invention relates to a switching arrangement ( 15 ) with a pre-selector ( 28 ) for a power transformer ( 10, 40 ) which has multiple windings ( 12, 14 ). The pre-selector is designed to optionally connect at least one first winding ( 12 ) to one of the two end contacts ( 30, 32 ) of at least one second winding ( 14 ). At least one first switch is arranged in the connection between the preselector ( 28 ) and the first winding ( 12 ), thereby allowing the pre-selector to be switched in an arc-free manner and thus in a gas-free manner as well.

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Номер записи: 68
20-07-2017 дата публикации

INTEGRATED DEVICE PACKAGE COMPRISING A TUNABLE INDUCTOR

Номер: US20170207022A1
Автор: Choi Sangjo, Lee John Jong Hoon, Song Young Kyu
Принадлежит:

Some features pertain to a package substrate that includes at least one dielectric layer, an inductor in the at least one dielectric layer, a first terminal coupled to the inductor, a second terminal coupled to the inductor, and a third terminal coupled to the inductor. The first terminal is configured to be a first port for the inductor. The second terminal is configured to be a second port for the inductor. The third terminal is a dummy terminal. In some implementations, the package substrate includes a solder resist layer over the dielectric layer, where the solder resist layer covers the third terminal. In some implementations, the package substrate includes a solder interconnect over the third terminal, such that the solder resist layer is between the third terminal and the solder interconnect. In some implementations, the package substrate is coupled to a die comprising a plurality of switches. 1. A package substrate comprising:at least one dielectric layer;an inductor in the at least one dielectric layer;a first terminal coupled to the inductor, wherein the first terminal is configured to be a first port for the inductor;a second terminal coupled to the inductor, wherein the second terminal is configured to be a second port for the inductor; anda third terminal coupled to the inductor, wherein the third terminal is a dummy terminal.2. The package substrate of claim 1 , further comprising a solder resist layer over the dielectric layer claim 1 , wherein the solder resist layer covers the third terminal.3. The package substrate of claim 2 , further comprising a solder interconnect over the third terminal claim 2 , such that the solder resist layer is between the third terminal and the solder interconnect.4. The package substrate of claim 1 , wherein the package substrate is coupled to a die comprising a plurality of switches.5. The package substrate of claim 4 , wherein the plurality of switches comprises a first switch and a second switch claim 4 , and wherein ...

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Номер записи: 69
20-07-2017 дата публикации

INTEGRATED DEVICE PACKAGE COMPRISING A REAL TIME TUNABLE INDUCTOR IMPLEMENTED IN A PACKAGE SUBSTRATE

Номер: US20170207293A1
Автор: Choi Sangjo, Lee Jong-Hoon, Song Young Kyu, THADESAR Paragkumar Ajaybhai
Принадлежит:

Some features pertain to a device package that includes a die and a package substrate. The die includes a first switch. The package substrate is coupled to the die. The package substrate includes at least one dielectric layer, a primary inductor, and a first secondary inductor coupled to the first switch of the die. The first secondary inductor and the first switch are coupled to a plurality of interconnects configured to provide an electrical path for a reference ground signal. The primary inductor is configurable to have different inductances by opening and closing the first switch coupled to the first secondary inductor. In some implementations, the primary inductor is configurable in real time while the die is operational. In some implementations, the die further includes a second switch, and the package substrate further includes a second secondary inductor coupled to the second switch of the die. 1. A device package comprising:a die comprising a first switch; and at least one dielectric layer;', 'a primary inductor; and', 'a first secondary inductor coupled to the first switch of the die, wherein the primary inductor is configurable to have different inductances by opening and closing the first switch coupled to the first secondary inductor., 'a package substrate coupled to the die, the package substrate comprising2. The device package of claim 1 , wherein the package substrate comprises a plurality of interconnects configured to provide an electrical path for a reference ground signal claim 1 , and wherein the first secondary inductor and the first switch are coupled to the plurality of interconnects.3. The device package of claim 2 , wherein the first secondary inductor include a first terminal and the second terminal claim 2 , wherein the first terminal and the second terminal of the first secondary inductor are coupled to the plurality of interconnects configured to provide an electrical path for a reference ground signal.4. The device package of claim 1 , ...

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Номер записи: 70
04-08-2016 дата публикации

Tunable inductive device for parametric audio systems and related methods

Номер: US20160225518A1
Автор: Elwood Grant NORRIS
Принадлежит: Turtle Beach Corp

An apparatus and method for optimizing a parametric emitter system having a pot core inductive device coupled between an amplifier and emitter. The pot core inductive device allows for adjustments of the air gap formed between the two halves of the pot core structure to adjust its inductive value. This post-manufacture adjustability allows for corrections of differences caused by operations of other components in the audio system and to account for slight differences in the electrical circuit of different amplifier/emitter combinations. As efficiency of the system is dependent on the functional relationship between the amplifier, inductive device, and emitter, this allows for fine tuning of the signal to obtain high quality.

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Номер записи: 71
03-08-2017 дата публикации

CHIP COMPONENT

Номер: US20170221611A1
Автор: KONDO YASUHIRO, MATSUURA Katsuya, TAMAGAWA Hiroshi, Yamamoto Hiroki
Принадлежит: ROHM CO., LTD.

A chip component includes a chip component main body, an electrode pad formed on a top surface of the main body, a protective film covering the top surface of the main body and having a contact hole exposing the pad, and an external connection electrode electrically connected to the pad via the hole and having a protruding portion, which, in a plan view looking from a direction perpendicular to a top surface of the pad, extends to a top surface of the film and protrudes further outward than a region of contact with the pad over the full periphery of an edge portion of the hole. A method for manufacturing the component includes forming the pad on the main body's top surface, forming the protective film, forming the hole in the film so as to expose the pad, and forming the electrode electrically connected to the pad via the hole. 1. A chip component comprising:a chip component main body;an electrode pad formed on a top surface of the chip component main body;a protective film covering the top surface of the chip component main body and having a contact hole exposing the electrode pad at a bottom surface; andan external connection electrode electrically connected to the electrode pad via the contact hole and having a protruding portion, which, in a plan view looking from a direction perpendicular to a top surface of the electrode pad, extends to a top surface of the protective film and protrudes further outward than a region of contact with the electrode pad over the full periphery of an edge portion of the contact hole.2. The chip component according to claim 1 , wherein the protective film has an inclining surface that spreads outward from the region of contact at the edge portion of the contact hole and the protruding portion of the electrode contacts the inclining surface.3. The chip component according to claim 1 ,wherein the protective film includes a passivation film and a resin film laminated on the passivation film,wherein the contact hole is formed to ...

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Номер записи: 72
20-08-2015 дата публикации

HIGH VOLTAGE TRANSFORMER HAVING A SENSOR SYSTEM, METHOD FOR MONITORING PHYSICAL CHARACTERISTIC VARIABLES OF A HIGH VOLTAGE TRANSFORMER AND SENSOR SYSTEM FOR MONITORING PHYSICAL CHARACTERISTIC VARIABLES

Номер: US20150235759A1
Автор: Hinz Ansgar, Micksch Frank
Принадлежит:

The invention relates to a high voltage transformer () having a sensor system () for monitoring physical characteristic variables. In particular, said sensor system has at least one sensor () that comprises a glass fiber () with a sensor head (). Said sensor head supports a plurality of Bragg gratings (). An evaluation unit () is associated with the sensor system and is connected to the at least one sensor head via said glass fiber. The invention is based on the general inventive concept of arranging the sensors of the sensor system between successive windings () of the high voltage transformer using spacers. In addition, the use of a plurality of Bragg gratings in the sensor head ensures that at least one of the Bragg gratings determines the actual physical characteristic variables such as temperature or contact force (A). 1. A combination with a high-voltage transformer , a sensor system for monitoring physical characteristic variables of the high-voltage transformer , the sensor system comprising;at least one sensor that comprises an optical fiber with a sensor head carrying a plurality of Bragg gratings,an evaluating unit connected with the at least one sensor head by the optical fiber is associated with the sensor system, anda support mechanically connected with the at least one sensor and situated between two successive windings of the high-voltage transformer.2. The sensor system according to claim 1 , wherein the sensor head comprises a first Bragg grating with a first characteristic Bragg wavelength l claim 1 , a second Bragg grating with a second characteristic Bragg wavelength land a third Bragg grating with a third characteristic Bragg wavelength l.3. The sensor system according to claim 1 , wherein the at least one sensor together with the support is clamped in place between the two successive windings of the high-voltage transformer.4. The sensor system according to claim 1 , wherein the sensor system comprises four of the sensors each connected with ...

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Номер записи: 73
20-08-2015 дата публикации

Actuator For A Tap Changer

Номер: US20150235760A1
Автор: Hedsten Harald, Krainer Per
Принадлежит: ABB TECHNOLOGY LTD

An actuator for a tap changer of an electrical transformer, including a piston, being hollow to define a piston space; a cylinder arranged around the piston such that the piston is arranged to be movable axially into and out of the cylinder; a piston ring fixed to the outside surface of the piston such that a cylinder space is formed between the piston and the cylinder and delimited by the piston ring, the cylinder space having a variable volume which is configured to vary with axial movement of the piston; and a spring engaging both the piston and the cylinder such that the spring is able to be compressed and elongated, respectively, with axial movement of the piston. The piston space is connected to the cylinder space via at least one hole through the hollow piston. The piston space is connected to an outside of the piston. 1. A tap changer for an electrical transformer , comprising a liquid-filled actuator , the actuator comprising:a movable piston having a longitudinal axis;an energy storing device, in mesh with the piston and being configured for storing energy during axial movement of the piston in a direction and for inducing axial movement of the piston in an opposite direction when the energy stored in the energy storing device is released;wherein a space is defined within the actuator, the space having a volume which varies with the axial movements of the piston; andat least one choke valve arranged for controlling a flow of the liquid, with which the actuator is filled, passing through the choke valve between the variable volume space and an outside of the actuator as a result of said axial movement of the piston when the energy stored in the energy storing device is released.2. The tap changer of claim 1 , wherein the variable volume space is a piston space formed within the piston claim 1 , and wherein the choke valve is arranged in a fluid flow path between the piston space and the outside of the actuator.3. The tap changer of claim 1 , wherein the ...

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Номер записи: 74
19-08-2021 дата публикации

CURRENT TRANSFORMER POWERED CONTROLLER

Номер: US20210257158A1
Автор: BUELL RICHARD RALPH
Принадлежит:

A system includes a current transformer including: a primary coil, and a secondary coil including at least two taps; a tap selection circuit; a current measurement apparatus configured to produce an indication of an amount of current flowing in the secondary coil; a power supply electrically connected to a first one of the taps, the power supply configured to receive electrical power from the first one of the taps; and a controller coupled to the power supply and the current measurement apparatus, the controller configured to receive electrical power from the power supply and to control the tap selection circuit based on the indication of an amount of current in the secondary coil. 1. A system comprising: a primary coil; and', 'a secondary coil comprising at least two taps;, 'a current transformer comprisinga tap selection circuit;a current measurement apparatus configured to produce an indication of an amount of current flowing in the secondary coil;a power supply electrically connected to a first one of the taps, the power supply configured to receive electrical power from the first one of the taps; anda controller coupled to the power supply and the current measurement apparatus, the controller configured to receive electrical power from the power supply and to control the tap selection circuit based on the indication of an amount of current in the secondary coil.2. The system of claim 1 , wherein the controller is configured to determine whether to electrically connect an additional one of the taps to the power supply and the current measurement apparatus based on the indication of the amount of current in the secondary coil.3. The system of claim 1 , wherein the controller is further configured to:compare the indication of the amount of current in the secondary coil to an overcurrent specification; anddetermine whether to generate a trip signal for a circuit breaker based on the comparison.4. The system of claim 1 , wherein the tap selection circuit comprises ...

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Номер записи: 75
17-08-2017 дата публикации

PRESELECTOR SWITCH ASSEMBLY FOR A VARIABLE TRANSFORMER

Номер: US20170236658A1
Автор: BAEUML Gerhard, BAUER Wladimir, BENGLER Moritz, ITTLINGER Benedikt, PANKOFER Martin, Rehkopf Sebastian, Stocker Andreas, ZERR Eduard, ZINTL Markus
Принадлежит:

The invention relates to a switch assembly (), in particular a preselector, for a variable transformer () having a first winding () and a second winding () with a first and a second tap (), said switch assembly comprising: a first connection terminal () that can be connected to the first winding (); a second connection terminal () that can be connected to the first tap (); a third connection terminal () that can be connected to the second tap (); a first, second, third and fourth fixed contact (); a vacuum interrupter (); a first moving contact () that can be contacted selectively with the first or second fixed contact (); a second moving contact () that can be contacted selectively with the third or fourth fixed contact (), wherein the second and the fourth fixed contact () are connected to the second connection terminal (), the first and the third fixed contact () are connected to the third connection terminal (), the first moving contact () is connected to the first connection terminal () via the vacuum interrupter (), and the second moving contact () is connected to the first connection terminal (). 1. A preselector switch assembly for a control transformer having a first winding with a first tap and a second winding with a second tap , the assembly comprising:a first connection terminal connectable with the first winding;a second connection terminal connectable with the first tap;a third connection terminal connectable with the second tap;first, second, third and fourth fixed contacts;a vacuum interrupter;a first movable contact selectably contactable with the first or second fixed contact; anda second movable contact selectably contactable with the third or fourth fixed contact the second and fourth fixed contacts connected with the second connection terminal. the first and third fixed contacts being connected with the third connection terminal, the first movable contact being connected with the first connection terminal by the vacuum interrupter, the second ...

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Номер записи: 76
25-07-2019 дата публикации

ON-LOAD TAP CHANGER, REGULATING TRANSFORMER WITH ON-LOAD TAP CHANGER, AND METHOD FOR CONNECTING AN ON-LOAD TAP CHANGER

Номер: US20190228922A1
Автор: Hammer Christian, Hoerl Marco, Stocker Andreas
Принадлежит:

An on-load tap changer includes: a fine selector, including: fixed contacts having a commutation contact, connectable with a main winding, and tap contacts, connectable with an associated tap of regulating windings; first and second arms that selectably contact the fixed contacts; a preselector, switchable between first and second settings, connectable with the regulating and main windings, and having: first, second, and third preselector fixed contacts, connectable in the first setting with the first preselector fixed contact and in the second setting with the second preselector fixed contact; and a load changeover switch, switchable between first and second changeover settings, and including: a first terminal connected with the first arm, a second terminal connected with the second arm, and a diverter line connected in the first changeover setting with the first terminal and in the second changeover setting with the second terminal. 1. A method for switching an on-load tap changer , wherein the on-load tap changer comprises: a plurality of selector fixed contacts comprising a commutation contact, which is connectable with a main winding of a regulating transformer, and a plurality of tap contacts, which are respectively connectable with an associated tap of a regulating winding of the regulating transformer;', 'a first selector arm, which is configured to selectably contact each of the selector fixed contacts; and', 'a second selector arm, which is configured to selectably contact each of the selector fixed contacts;, 'a fine selector, which comprises a first preselector fixed contact,', 'a second preselector fixed contact, and', 'a third preselector fixed contact, which is connected in the first setting with the first preselector fixed contact, and in the second setting, connected with the second preselector fixed contact; and, 'a preselector, which is switchable over from a first setting to a second setting, and conversely, which is connectable with the ...

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Номер записи: 77
24-08-2017 дата публикации

COIL ASSEMBLY FOR INDUCTIVE ENERGY TRANSMISSION, INDUCTIVE ENERGY-TRANSMISSION DEVICE, AND METHOD FOR MANUFACTURING A COIL ASSEMBLY FOR INDUCTIVE ENERGY TRANSMISSION

Номер: US20170243691A1
Автор: Diekhans Tobias, Stewing Felix
Принадлежит:

The invention relates to a coil assembly () for inductive energy transmission, comprising: an electrically non-conductive substrate (), which has a first side () and a second side (); a plurality of conducting tracks (), which are arranged on the first side () and on the second side () of the substrate () and which form a coil () for inductive energy transmission; a plurality of vias () in the substrate () for feeding the conducting tracks () through the substrate (); wherein at least two of the plurality of conducting tracks () are arranged in a twisted manner in relation to each other in the substrate (). The invention further relates to an energy transmission device and to a method for producing a coil assembly () for inductive energy transmission. 11. A coil assembly () for inductive energy transmission , comprising{'b': 2', '10', '11, 'an electrically non-conductive substrate () which has a first side () and a second side ();'}{'b': 30', '10', '11', '2', '50, 'a plurality of strip conductors () which are disposed on the first side () and on the second side () of the substrate (), and which form a coil () for inductive energy transmission; and'}{'b': 4', '2', '30', '2, 'a plurality of vias () in the substrate () for routing the strip conductors () through the substrate ();'}{'b': 30', '2, 'wherein at least two of the plurality of strip conductors () are disposed in a twisted manner in relation to each other in the substrate ().'}2122021222425. The coil assembly () as claimed in claim 1 , wherein the substrate () is formed from multiple substrate segments (; ; ; ; ).31. The coil assembly () as claimed in claim 2 , wherein the substrate segments are circular segments.4123130. The coil assembly () as claimed in claim 1 , wherein the substrate () comprises a strip conductor section () which is configured for the variable interconnection of the strip conductors ().51313550. The coil assembly () as claimed in claim 4 , wherein the strip conductor section () comprises ...

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Номер записи: 78
01-09-2016 дата публикации

DOUBLE DEAD BAND TAB SWITCH FOR TRANSFORMER AND CONTROL METHOD

Номер: US20160254106A1
Автор: Jang Gilsoo, SONG Chong Suk
Принадлежит: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

The present invention relates to a tap switch control method, which comprises the steps of: measuring data of a distribution system; calculating a second dead band and a reference voltage using the measured data; comparing the difference between the measured actual voltage and the reference voltage with a first dead band; comparing the difference between the actual voltage and the reference voltage with the second dead band, when the difference between the actual voltage and the reference voltage is outside the first dead band as a result of the comparison with the first dead band; and controlling the tap of the transformer, when the difference between the actual voltage and the reference voltage is outside the second dead band as a result of the comparison with the second dead band. Accordingly, it is possible to suppress a frequent operation of tap switching due to the fluctuations of the system and distributed power supply by applying the double dead band and to ensure the transformer's lifespan. 1. A tap switch control method , comprising:measuring data of a distribution system;calculating a second dead band and a reference voltage using the measured data;comparing the difference between the measured actual voltage and the reference voltage with a first dead band;comparing the difference between the actual voltage and the reference voltage with the second dead band, when the difference between the actual voltage and the reference voltage is outside the first dead band as a result of the comparison with the first dead band; andcontrolling the tap of the transformer, when the difference between the actual voltage and the reference voltage is outside the second dead band as a result of the comparison with the second dead band.2. The tap switch control method according to claim 1 ,wherein in the measuring of data of a distribution system, at least one of a current of each feeder, a secondary bus voltage, a tap state, and a capacity of a distributed power source is ...

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Номер записи: 79
17-09-2015 дата публикации

MAGNETOTHERMAL CURRENT LIMITING DEVICE

Номер: US20150263515A1
Автор: Caillault Nathalie, Schuster Philippe
Принадлежит:

A current limiting device including a transformer including an element made from a magnetothermal material, a primary conductor, and a secondary winding. Heat is generated by the current flowing through the primary conductor and when the current exceeds a certain threshold it modifies the coupling coefficient of the transformer, which makes it possible to limit the current in the primary conductor. 110-. (canceled)11. A current limiting device comprising:a primary configured to be connected to an electrical line;a secondary comprising a limiting resistance; anda magnetic circuit for coupling the primary and the secondary, wherein the magnetic circuit comprises a magnetocaloric material, magnetization of which increases with temperature above a first temperature greater than or equal to 330 K.12. The device as claimed in claim 11 , wherein the magnetocaloric material is an alloy of nickel and manganese.13. The device as claimed in claim 12 , wherein the magnetocaloric material is of NiCoMnX type claim 12 , wherein X∈{Al claim 12 , In claim 12 , Sb claim 12 , Sn}.14. The device as claimed in claim 11 , wherein the magnetization of the material reaches a maximum at a second temperature of less than 420 K claim 11 , the magnetization maximum being greater than 40 emu/g.15. The device as claimed in claim 14 , wherein the magnetocaloric material has a magnetization maximum that increases with a magnetic field applied to the material.16. The device as claimed in claim 11 , wherein the magnetic circuit forms a torus with first portions made of magnetocaloric material and second portions made of material for which the magnetization is not modified above the first temperature.17. The device as claimed in claim 16 , wherein the first and second portions alternate to form sectors of the torus.18. The device as claimed in claim 11 , wherein the secondary comprises a winding of a conducting wire around the magnetic circuit.19. The device as claimed in claim 11 , wherein limiting ...

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Номер записи: 80
15-08-2019 дата публикации

Transformer Device with Modified Voltage Tap Arrangement

Номер: US20190250655A1
Автор: Manhart James S., Ryan John
Принадлежит: SAI Advanced Power Solutions

A transformer configured to receive a primary incoming voltage and provide at least two secondary output voltages. The transformer includes at least one secondary output assembly which includes at least two secondary voltage stabs, the number of voltage stabs being the same as the number of secondary output voltages, connected and configured to provide access to a respective secondary output voltage. The chosen secondary output voltage is connected by coupling a tap change link between a lug landing and either of the at least two secondary voltage stabs. Another of the secondary output voltages is provided by connecting coupling the tap change link between the lug landing and the other of the at least two secondary voltage stabs. 1. A transformer for providing selectively configurable output voltages , the transformer configured to receive a primary incoming voltage and provide at least two secondary output voltages , the transformer comprising: at least two secondary voltage stabs, wherein the number of voltage stabs is the same as the number of secondary output voltages, and wherein the secondary voltage stabs are connected and configured to provide access to a respective secondary output voltage of the at least two secondary output voltages;', 'a lug landing;', 'at least one secondary cable attachment lug supported on and electrically connected with the at least one lug landing;', 'a tap change link, the tap change link being configured for attachment to the lug landing and either of the at least two secondary voltage stabs;', 'at least one fastener coupling the tap change link to the lug landing; and', 'at least one fastener coupling the tap change link to one of the at least two secondary voltage stabs., 'at least one secondary output assembly, the secondary output assembly including2. The transformer according to claim 1 , including three secondary output assemblies claim 1 , wherein each secondary output assembly includes two secondary voltage stabs.3. The ...

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Номер записи: 81
04-12-2014 дата публикации

Compact step-programmable optimization of low-noise amplifier signal-to-noise

Номер: US20140354389A1
Автор: Cliff Richard
Принадлежит:

A new family of programmable low-noise RF impedance transformers has been developed. These new transformers can be configured and operated to compensate for variable antenna output impedance. This enables better optimization of RF receiving-system SNR. For some applications, these new devices can be more compact and less expensive than any previously available. 1. A new construction for miniature (or approximately centimeter-scale) remotely-controlled (or programmable) step-variable low-noise inductors which employs linear pneumatic actuation is claimed. The new inductors are comprised of the following elements: two conductors wound on parallel linear ferromagnetic or non-ferromagnetic cores to form solenoid coils; a rolling or sliding contactor which electrically connects the two coils and is free to move between and parallel to them; a bi-directional linear pawl-and-rack ratchet which limits the movement of the contactor at each actuation step; a bi-directional linear pneumatic actuator which moves the contactor; a supporting frame; a protective package; one or more external pneumatic connections to the actuator; and external electrical connections to the variable inductance.2. A new construction for miniature (or approximately centimeter-scale) remotely-controlled (or programmable) step-variable low-noise inductors which employs rotating pneumatic actuation is claimed. The new inductors are comprised of the following elements: two conductors each wound part way around a ferromagnetic or non-ferromagnetic toroid core; a rolling or sliding contactor which electrically connects the two coils and is free to rotate between them; a bi-directional rotating pawl-and-rack ratchet which limits the movement of the contactor at each actuation step; a bi-directional rotating pneumatic actuator which moves the contactor; a supporting frame; a protective package; one or more external pneumatic connections to the actuator; and external electrical connections to the variable ...

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Номер записи: 82
04-12-2014 дата публикации

TAP CHANGER

Номер: US20140354390A1
Автор: De Doncker Rik W., Dohnal Dieter, Engel Stefan, Viereck Karsten, Von Bloh Jochen
Принадлежит:

The invention relates to a tap changer for voltage regulation, comprising semiconductor switch units (S S S S) on a variable transformer having a regulating winding, wherein two parallel load branches () are provided, in each of which several series-connected semiconductor switch units are arranged. Parts of the regulating winding (W W W) and bridges (B B) are provided alternately and run parallel between the two load branches, alternating such that by corresponding connection of the semiconductor switch units in both load branches, the parts of the regulating wiring can be operated arbitrarily in a subtractive and/or additive manner. 1. A tap changer for voltage regulation , the tap changer comprising:a regulating transformer with a regulating winding having a fixed unregulated part,a load diverter;semiconductor units at the regulating transformer, the tap changer being between the fixed, unregulated part of the regulating winding and the load diverter,first and second parallel load branches,semiconductor switching units in series connection in the first load branch,further semiconductor switching units similarly in series connection in the second load branch in such a manner that each semiconductor switching unit of the first load branch and each semiconductor switching unit of the second load branch are opposite one another as a pair, andrespective sub-windings of the regulating winding and electrical bridges connected in parallel between the two load branches in alternation between the semiconductor switching units opposite one another in pairs.2. The tap changer according to claim 1 , wherein the sub-windings have different winding numbers.3. The tap changer according to claim 1 , wherein the individual semiconductor switching units consist of thyristor pairs in anti-parallel connection.4. The tap changer according to claim 1 , wherein at least one of the semiconductor switching units consists of a series connection of two or more individual semiconductor ...

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Номер записи: 83
11-12-2014 дата публикации

STEPPING SWITCH WITH VACUUM SWITCHING TUBES

Номер: US20140360983A1
Автор: Hoepfl Klaus, Wrede Silke
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

The invention relates to a stepping switch with vacuum switching tubes () according to the preamble of the first claim. According to the invention, the general inventive concept consists in providing a second cam disc () which is rotationally fixed to the driveshaft () in addition to the first cam disc () which is rotationally fixed to the driveshaft () and which is known from the prior art for applying the force of the opening stroke of the contact system of the vacuum switching tubes (). The second cam disc exerts a sufficiently high closing force onto the movable follower of the vacuum switching tubes () via a spring-lever system provided on the rocker arm arrangement () even in the event of a short-circuit stress and additionally allows a tolerance compensation of the contact system. 1. A tap changer with vacuum switching tubes for controlling a transformer having taps , comprising:a selector for power-free selection of the tap to be switched over, toa load changeover switch for actual switching over from the connected tap to the new, pre-selected tap, the load changeover switch having a rotatable to switch shaft,a first cam disk fixed against rotation on the switch shaft,a rocker lever arrangement with a first roller for actuating the vacuum switching tube,a second cam disk rotationally fixed on the switch shaft,two further limbs of U-shaped construction on the rocker lever arrangement,a lever having a free end provided with a second roller that co-operates with the second cam disk, the lever being between the further limbs and mounted to be rotatable about an axis, anda compression spring arranged between the lever and the further limb.2. The tap changer with vacuum switching tubes according to claim 1 , wherein laterally opposite pins that engage in corresponding slots of an actuating lever are provided at the end of the rocker lever arrangement remote from the switch shaft3. The tap changer with vacuum switching tubes according to claim 1 , wherein a further ...

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Номер записи: 84
22-08-2019 дата публикации

POWER ELECTRONIC TAP CHANGER MODULE FOR TRANSFORMER

Номер: US20190259530A1
Автор: Aloszko Pawel, Czopek Marcin, Grecki Filip, Jez Jaroslaw, Obrebski Krzysztof, Ostrogorska Magdalena
Принадлежит:

The subject of the application is a power electronic tap changer module for transformer using power electronic elements connected to sections of a primary winding of the transformer. The power electronic tap changer module is equipped with valves having a pair of a thyristor or transistors connected with a controller and the valves are connected in series with the fuses, respectively. The module is equipped with an additional oversized tap line having an oversized valve rated for short circuit current, which valve is connected with an overvoltage triggering circuit. The oversized valve is equipped with a pair of thyristor or transistors connected with a thermally protected voltage suppressing device. 1. A power electronic tap changer module for transformer , connected to the section of the primary winding of a transformer through tap lines respectively , where each of the tap lines is equipped with valves; each valve has a pair of a thyristors or transistors connected with a controller through a triggering circuit and a control signal receiver connected in parallel; the pair of thyristors or transistors is connected in antiparallel to each other and in parallel with a transient voltage suppressor device for basic short-term overvoltage protection , wherein the valves of the lines are connected in series with the fuses , respectively; the module is equipped with an additional oversized tap line having an oversized valve rated for short circuit current , which oversized valve is equipped with an overvoltage triggering circuit; the oversized valve is equipped with a second pair of thyristors or transistors connected in antiparallel to each other and is connected in parallel with a thermally protected voltage suppressing device.2. The power electronic tap changer module according to claim 1 , wherein the overvoltage triggering circuit has a MOV device or TVS diodes and a pair of diodes with reverse polarity.3. The power electronic tap changer module according to claim 1 ...

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Номер записи: 85
21-09-2017 дата публикации

ON-LOAD VOLTAGE REGULATION TAP SWITCH FOR TRANSFORMER AND SWITCH CONTROL METHOD

Номер: US20170271096A1
Автор: Wang Hai
Принадлежит:

Disclosed is an on-load voltage regulation tap switch for a transformer, comprising a main switch group, a switch contact protection branch and a switch control circuit, wherein the main switch group comprises a plurality of switch contacts, one end of the switch group is connected to a corresponding transformer winding tap, and the other end of the switch group is connected in parallel and is then connected to a power source; the switch contact protection branch is a series circuit formed by a plurality of groups of diodes and auxiliary switch contacts, and is respectively connected to both ends of a corresponding main switch in parallel; and the switch control circuit is composed of a power source, a single chip microcomputer and a peripheral circuit, and controls all of the main switches and auxiliary switches to act in a certain time sequence to complete the switching of the transformer windings.

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Номер записи: 86
21-09-2017 дата публикации

SWITCHING ARRANGEMENT FOR A CONTROL TRANSFORMER, IN PARTICULAR POLARITY SWITCHING MEANS

Номер: US20170271098A1
Автор: BAEUML Gerhard, BAUER Wladimir, BENGLER Moritz, HEROLD Stefan, ITTLINGER Benedikt, PANKOFER Martin, Rehkopf Sebastian, Stocker Andreas, ZERR Eduard, ZINTL Markus
Принадлежит:

A switching arrangement (), in particular a polarity switching means, for a control transformer () which comprises a first winding () for a phase of an AC power supply system, which phase is to be controlled, comprises—a first connection terminal () which can be connected to the winding ();—a second connection terminal () which can be connected to a discharge line ();—a vacuum interrupter ();—an isolator ();—a resistor () which is connected in series with the vacuum interrupter () and the isolator (); wherein—the first connection terminal () is connected to the second connection terminal () by means of the series circuit.

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Номер записи: 87
08-10-2015 дата публикации

SINGLE-PHASE ELECTRIC FURNACE TRANSFORMER

Номер: US20150287526A1
Автор: Guan Junjun, Tirilly Serge
Принадлежит:

A single-phase electric furnace transformer is provided according to the basic principle of the invention, comprising: a single magnetic core, said magnetic core comprising two side columns and at least one main column; a main transformer, comprising a first primary side winding and a first secondary side winding which are disposed on said at least one main column, wherein said first primary side winding consists of a first winding and a second winding which are connected in series with each other; and a voltage regulating autotransformer, which is disposed on one of two side columns of said magnetic core, and which comprises a second primary side winding and a second secondary side winding, wherein said second secondary side winding is an adjustable winding having on-load tap switch, and said adjustable winding is connected in series between the first winding and the second winding of said main transformer. The direct effect on the regulating winding and the regulating switch by the over-voltage of the grid can be avoided in the single-phase electric furnace transformer of the invention, and the voltage between two terminals of the primary winding of the main transformer can be reduced. Furthermore, the winding of the voltage regulating transformer is disposed on the side column of the main transformer in the invention, so that the material and the transformer loss can be reduced, and the installation space of the transformer can be decreased. 1. A single-phase electric furnace transformer , comprising:a single magnetic core, said magnetic core having two side columns and at least one main column;a main transformer, having a first primary side winding and a first secondary side winding which are disposed on said at least one main column, wherein said first primary side winding consists of a first winding and a second winding which are connected in series with each other; anda voltage regulating autotransformer, disposed on one of the two side columns of said ...

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Номер записи: 88
29-08-2019 дата публикации

VDT WITH HIGH PERMEABILITY SHIELD

Номер: US20190267175A1
Автор: Avritch Steven A., Eldridge Jeffrey A.
Принадлежит:

An example actuator assembly includes an actuator configured to move a rod. A variable differential transformer (VDT) is situated adjacent to the actuator. The VDT includes a core coupled to the rod such that movement of the rod causes a corresponding movement of the core. A plurality of windings surround the core for measuring displacement of the core. A shield surrounds the plurality of windings and shields the plurality of windings from a magnetic field of the actuator. The shield having a maximum permeability of 50,000-500,000. A LVDT configuration method is also disclosed. 1. An actuator assembly comprising:an actuator configured to move a rod; and a core coupled to the rod such that movement of the rod causes a corresponding movement of the core;', 'a plurality of windings that surround the core for measuring displacement of the core; and', 'a shield that surrounds the plurality of windings and shields the plurality of windings from a magnetic field of the actuator, the shield having a maximum permeability of 50,000-500,000., 'a variable differential transformer (VDT) situated adjacent to the actuator, the VDT comprising2. The actuator assembly of claim 1 , wherein the shield has a maximum permeability of at least 60 claim 1 ,000.3. The actuator assembly of claim 1 , wherein the shield has a maximum permeability of at least 70 claim 1 ,000.4. The actuator assembly of claim 1 , wherein the shield has a maximum permeability of at least 75 claim 1 ,000.5. The actuator assembly of claim 1 , wherein the shield comprises nickel and iron.6. The actuator assembly of claim 5 , wherein the shield comprises non-zero amounts of carbon claim 5 , silicon claim 5 , and manganese claim 5 , each non-zero amount less than 1% of the composition of the shield.7. The actuator assembly of claim 1 , wherein:the actuator is a linear actuator comprising at least one stator that surrounds a portion of the rod and is configured to move the rod along a longitudinal axis;the VDT is a ...

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Номер записи: 89
25-12-2014 дата публикации

Transformer with on-load tap changer

Номер: US20140375407A1
Автор: Dieter Dohnal, Jochen von Bloh, Karsten Viereck, Volker Karrer
Принадлежит: Maschinenfabrik Reinhausen GmbH

The invention relates to a transformer with a tap changer, wherein optionally the primary or secondary side can be regulated by the tap changer, and wherein, on the side of the transformer to be regulated, a main winding and at least one regulating winding, which is connectable by the tap changer, are provided. According to the invention, the main winding is divided into two main winding parts, and the at least one regulating winding and the tap changer ( 3 ) connecting the regulating winding are arranged electrically between the two main winding parts ( 1, 2 ).

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Номер записи: 90
06-10-2016 дата публикации

METHOD TO OPTIMIZE OPERATION OF A TRANSFORMER COOLING SYSTEM, THE CORRESPONDING SYSTEM AND A METHOD TO DETERMINE THE VFD CAPACITY

Номер: US20160293314A1
Автор: Chen Yao, WANG Zhao, Yang Xiaoxia, Yu RongRong
Принадлежит:

The present application discloses a method to optimize operation of a transformer cooling system, the corresponding cooling system, and a method to determine the capacity of Variable Frequency Drives (VFD) that are used in the transformer cooling system. The method comprises: preprocessing the initial data input by user; collecting the on-line data, and calculating the optimized control command to meet the requirement of the transformer loss, top-oll temperature variation and noise; and executing the control actions by controlling a controllable switch and/or sending a control command to a VFD. Compared with the existing prior arts, the proposed solutions are much more intuitive and practical in the field of the cooling system. 1. A method to optimize operation of the transformer cooling system , comprising:preprocessing the initial data input by a user;collecting the on-line data, and calculating the optimized control command to meet the requirement of the transformer loss; andexecuting the control actions by controlling a controllable switch and/or nding a control command to a Variable Frequency Drive (VFD).2. The method according to claim 1 , wherein said calculating the optimized control command includes considering the requirement of the top-oil temperature variation and/or the noise level.3. The method according to claim 2 , wherein said calculating the optimized control command includes considering the requirements according to the weighting factors of the transformer loss claim 2 , the top-oil temperature variation and the noise level.4. The method according to wherein said preprocessing comprising:collecting parameters of the transformer type, the transformer ratio, and the ratio o load losses at rated current to no-load losses;collecting parameters of the transformer thermal model;collecting parameters of the tap changer mid position, the step voltage and the present tap changer, position;collecting parameters of the cooler type, the fart rurnber and the ...

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Номер записи: 91
06-10-2016 дата публикации

ELECTRICAL SWITCHING SYSTEM FOR A THREE-PHASE NETWORK

Номер: US20160293325A1
Автор: KIRCHNER Laurenc, SHEIKO Stanislav, SPAETH Matthias
Принадлежит:

An electrical system () for a three-phase alternating current network, comprising 1. An electrical system for a three-phase alternating current network having first , second , and third phases , the electrical system comprisingfirst, second, and third transformers each with a primary side and a secondary side for the respective phases of the alternating current network, each primary side or secondary side of each transformer having a main winding and a regulating winding for the respective phase;respective separate first, second and third transformer housings for the first, second, and third transformers; anda switching assembly connected to the transformers and designed to connect each regulating winding with each of the main windings, the switching assembly being in one of the transformer housings or in its own switch housing.2. The electrical system according to claim 1 , further comprising:an insulation medium filling at least one of the transformer housings or the switch housing.3. The electrical system according to claim 1 , whereinthe switching assembly is designed according to one of the following claims.4. A switching assembly for use in an electrical system according to claim 1 , whereinthe switching assembly is designed for or serves for switching at least one of the regulating windings to a respective one of the main windings during operation of the electrical system;a respective first, second, or third subassembly is provided for each phase to be switched, and each subassembly has respective movable and fixed contacts that are selectively switchable in each subassembly by the respective movable switch contact, each movable switch contacts being fastened on a switching mechanism; anda first electric line, a second electric line, and a third electric line conductively connecting the contacts in each subassembly such that the contacts of the various subassemblies are each contacted once by the first, second, and third electric line.5. The switching ...

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Номер записи: 92
05-10-2017 дата публикации

Resonant Transformer

Номер: US20170287629A1
Автор: Mashikian Matthew S., Szatkowski Andrzej Pawel
Принадлежит: Instrument Manufacturing Company

Exemplary embodiments of the present disclosure are directed to resonant transformers (or reactors) and coil arrangements associated with resonant transformers. The coil arrangements can include a grounding coil configured to generate a net-zero induced voltage between a first end of the grounding coil and a second end of the grounding coil layer, and one or more step-up coil layers formed by one or more layers of pressure tape, insulating materials, and wire wrapped to form coils about a portions of a split magnetic core. The split magnetic core can include a first core segment and a second core segment, where one of the core segments is disposed within a main housing and one of the core segments is disposed external to the main housing. A gap between the first and second core segments can be manipulated to control an inductance of the resonant transformer. 1. A resonant transformer comprising:a magnetic core;a core mandrel wrapped over a leg of the magnetic core; and a grounding coil layer configured to provide a net-zero induced voltage between opposite ends of the ground coil layer; and', 'a plurality of step coil layers, the plurality of step coil layers being wound coaxially and concentrically about the grounding coil layer,', 'wherein each successive step-up coil layer in the plurality of step-up coil layers includes fewer turns than a preceding step-up coil lay in the plurality of step-up coil layers., 'a coil having a coil arrangement wrapped coaxially and concentrically over the core mandrel, the coil arrangement includes2. The resonant transformer of claim 1 , wherein each end of the coil arrangement includes grading tape to control an electrical stress along each end of the coil arrangement.3. The resonant transformer of claim 1 , wherein the grounding coil layer includes a grounding coil alternating between a specified number of turns in a first direction and the specified number of turns in a second direction.4. The resonant transformer of claim 3 , ...

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Номер записи: 93
22-10-2015 дата публикации

Mems tunable inductor

Номер: US20150302982A1
Автор: Christopher D. Meyer, Nathan S. Lazarus
Принадлежит: US Army Research Laboratory

Embodiments of the present invention provide a tunable inductor having a magnetic core which has an air gap. In order to vary the inductance of the inductor, the inductor includes a tuner that is moveable relative to the magnetic core in the vicinity of the air gap. An actuator is attached to the tuner which, upon actuation, moves the tuner relative to the magnetic core to thereby vary the spacing between the tuner and the core in the vicinity of the air gap. The variation of the spacing between the tuner and the magnetic core varies the effective air gap of the overall inductor in the desired fashion.

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Номер записи: 94
12-10-2017 дата публикации

VOLTAGE REGULATION FOR MULTI-PHASE POWER SYSTEMS

Номер: US20170294846A1
Автор: Daley Daniel Joseph, Rapant Fred Joseph, Sauer Daniel Michael
Принадлежит: Cooper Technologies Company

A power system can include a first tap changer for a first regulated transformer, where the first tap changer has a plurality of first positions. The power system can also include a second tap changer for a second regulated transformer, where the second tap changer has a plurality of second positions. The power system can further include at least one first instrument transformer coupled to the first regulated transformer. The power system can also include at least one second instrument transformer coupled to the second regulated transformer. The power system can further include a controller coupled to the at least one first instrument transformer and the at least one second instrument transformer, where the controller adjusts the first tap changer to a first adjusted position among the first positions based on the first measurements of the first regulated transformer and the second measurements of the second regulated transformer. 1. A power system comprising:a first tap changer for a first regulated transformer, wherein the first tap changer has a plurality of first positions;a second tap changer for a second regulated transformer, wherein the second tap changer has a plurality of second positions;at least one first instrument transformer coupled to the first regulated transformer, wherein the at least one first instrument transformer harvests a plurality of first measurements of the first regulated transformer;at least one second instrument transformer coupled to the second regulated transformer, wherein the at least one second instrument transformer harvests a plurality of second measurements of the second regulated transformer; anda controller coupled to the at least one first instrument transformer and the at least one second instrument transformer, wherein the controller adjusts the first tap changer from a first position to a first adjusted position among the plurality of first positions based on the plurality of first measurements of the first regulated ...

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Номер записи: 95
19-09-2019 дата публикации

Monitoring Tap Changer Switching

Номер: US20190288503A1
Автор: Stenestam Bengt-Olof
Принадлежит:

The present disclosure relates to a method of monitoring switching by an on-load tap changer (OLTC) from a first contact to a second contact of a transformer winding The method includes measuring a voltage of the transformer. The method also includes measuring a temperature of the OLTC. The method also includes, based on the measured voltage and temperature, determining whether the switching from the first contact to the second contact has been successful. 1. A method of monitoring switching by an on-load tap changer , OLTC , from a first contact to a second contact of a transformer winding during a switching time period , the method comprising:{'b': '1', 'measuring (M) a phase voltage of the transformer over time;'}{'b': '2', 'measuring (M) a temperature of the OLTC over time;'}{'b': '3', 'based on the measured voltage and temperature, determining (M) that the switching from the first contact to the second contact has not been successful;'}{'b': '3', 'wherein the determining (M) includes determining that the measured voltage has changed during the switching time period and that the change is above a predetermined threshold; and'}{'b': '3', 'wherein the determining (M) includes determining that the measured temperature continues to rise after the end of the switching time period.'}23. The method of claim 1 , wherein the determining (M) includes determining that a quotient between the measured phase voltage and a measured current of the same phase has changed during the switching time period and that the change is above a predetermined threshold.3. The method of claim 1 , wherein the method further includes tripping the transformer.41. The method of any claim 1 , wherein the measuring (M) of a voltage includes measuring a voltage at a bushing of the transformer.52. The method of claim 1 , wherein the measuring (M) of a temperature includes measuring a temperature of insulation liquid claim 1 , e.g. claim 1 , oil claim 1 , in the OLTC by means of a temperature sensor ...

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Номер записи: 96
25-10-2018 дата публикации

FLEXIBLE VOLTAGE TRANSFORMATION SYSTEM

Номер: US20180308632A1
Автор: Bala Sandeep, Henriksen Matthew Lee, Prieto Alberto, Radu Ion C., Upadhyay Parag, Zant Nikolaus
Принадлежит:

Unique systems, methods, techniques and apparatuses of a modular power transformer are disclosed. One exemplary embodiment is a matrix power transformer including a plurality of block assemblies each including a plurality of transformer modules, each transformer module including a primary winding coupled to an input and a secondary winding coupled to an output, the inputs of each transformer module in one block assembly being coupled together and the outputs of each transformer block being coupled together. One of the secondary windings includes a plurality of taps structured to be selectively coupled to the output of the associated transformer module assembly or another secondary winding of the associated module assembly. 1. A matrix power transformer system comprising:a plurality of block assemblies each including a plurality of transformer modules, each transformer module including a primary winding coupled to an input and a secondary winding coupled to an output, the inputs of each transformer module in one block assembly being coupled together and the outputs of each transformer block being coupled together,wherein one of the secondary windings includes a plurality of taps structured to be selectively coupled to the output of the associated transformer module assembly or another secondary winding of the associated module assembly.2. The matrix power transformer system of claim 1 , wherein each block assembly is structured to weigh less than 40 tons claim 1 , and wherein the matrix power transformer system has a power rating greater than 100 megavolt-amperes (MVA).3. The matrix power transformer system of claim 1 , wherein each transformer module includes a plurality of primary windings coupled in series or in parallel claim 1 , and wherein each transformer module includes a plurality of second windings coupled in series or in parallel.4. The matrix power transformer system of claim 3 , wherein each input includes two input terminals claim 3 , each input ...

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Номер записи: 97
12-11-2015 дата публикации

ON-LOAD TAP CHANGER WITH CONNECTION TO OIL RESERVOIR OF A TRANSFORMER

Номер: US20150325387A1
Автор: Bieringer Alfred, Dohnal Dieter, Frotscher Rainer, Hurm Christian
Принадлежит:

Disclosed is an on-load tap changer comprising a connection to an insulating liquid of a transformer. The on-load tap changer in a housing () and the transformer are in the transformer tank () and are surrounded by insulating liquid (). At least one opening () is formed in the housing base (B) and/or housing cover (M), said opening providing a fluidic connection between the insulating liquid in the transformer tank and the insulating liquid in the housing. 1. An on-load tap changer with a connection to an insulating liquid of a transformer , wherein the transformer and the insulating liquid are surrounded by a transformer tank , and the on-load tap changer is mounted in a housing consisting of a housing cover , a housing base and a housing shell , which housing projects into the transformer tank and is filled with the insulating liquid that also surrounds the on-load tap changer , the housing base and/or the housing shell being formed with at least one hole that forms a fluid connection between the insulating liquid in the transformer tank and the insulating liquid in the housing.2. The on-load tap changer according to claim 1 , wherein the at least one opening is formed in the housing base.3. The on-load tap changer according to claim 2 , wherein a single opening is formed in the housing base by a removed drain screw.4. The on-load tap changer according to claim 1 , further comprising:a respective movable closure element that closes or opens the at least one opening in the housing base and/or housing shell by an actuating element via the housing cover. The invention relates to an on-load tap changer with a connection to the oil reservoir of a transformer.A power transformer with a tap changer is disclosed in German Patent Specification DE 10 2008 027 274 [US 2011/063064]. The power transformer and the tap changer are oil-filled. The tap changer is arranged in the transformer tank of the power transformer. The tap changer has a connecting flange that leads by way of ...

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Номер записи: 98
10-11-2016 дата публикации

VARIABLE INDUCTOR AND VARIABLE INDUCTOR MODULE

Номер: US20160329149A1
Автор: CHEON Seong Jong, Yoon Sung Jae
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

A variable inductor includes: an inductor unit including an inductor pattern; a ground unit having a ground potential; and a space between the inductor pattern and the ground unit, the space being adjustable to vary an inductance value of the variable inductor. 1. A variable inductor comprising:an inductor unit comprising an inductor pattern;a ground unit comprising a ground potential; anda space between the inductor pattern and the ground unit, the space being adjustable to vary an inductance value of the variable inductor.2. The variable inductor of claim 1 , wherein the inductor unit comprises:a pattern part comprising the inductor pattern; andan electrode part configured to receive external voltage.3. The variable inductor of claim 2 , further comprising an insulating layer disposed between the pattern part and the ground unit.4. The variable inductor of claim 2 , wherein the inductor unit further comprises a path providing unit configured to prevent a short between an input line of the electrode part and the inductor pattern.5. The variable inductor of claim 2 , wherein the electrode part and the pattern part are positioned at a same height with respect to a surface of the variable inductor.6. The variable inductor of claim 2 , wherein the electrode part and the ground unit are positioned at a same height with respect to a surface of the variable inductor claim 2 , and the pattern part is positioned higher than the ground unit.7. The variable inductor of claim 2 , wherein the pattern part is configured to bend claim 2 , in response to the electrode part receiving the external voltage claim 2 , to adjust the space.8. The variable inductor of claim 1 , wherein the inductor unit and the ground unit are configured through a microelectromechanical system (MEMS) technique.9. The variable inductor of claim 1 , wherein the ground unit is positioned below the inductor unit.10. A variable inductor module comprising: an inductor unit comprising an inductor pattern,', 'a ...

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Номер записи: 99
10-11-2016 дата публикации

ON-LOAD TAP CHANGER ACCORDING TO THE REACTOR SWITCHING PRINCIPLE

Номер: US20160329168A1
Автор: Bieringer Alfred, Hammer Christian, KALTENBORN Uwe, Pircher Christian, Sachsenhauser Andreas, Schuster Thomas
Принадлежит:

The invention relates to an on-load tap changer () according to the reactor switching principle for uninterrupted load switching between different tap windings of a tapped transformer (), comprising: an inductor () which is designed as an inductive transition reactance; the inductor () being part of the on-load tap changer (). 2. The on-load tap changer according to claim 1 , whereinthe on-load tap changer is a load selector.3. The on-load tap changer according to claim 1 , whereinthe choke is at an upper end or at a lower end of the load selector.4. The on-load tap changer according to claim 1 , whereinthe on-load tap changer is a combination of a load-changeover switch and a selector.5. The on-load tap changer according to claim 1 , whereinthe choke is at the upper end or at a lower end of the load-changeover switch and/or the choke is at the upper end or at a lower end of the selector.6. The on-load tap changer according to claim 1 , wherein{'b': '7', 'the load-changeover switch and the selector are connected by an iron core ) of the choke and the choke is at the iron core between the load-changeover switch and the selector.'}7. The on-load tap changer according to claim 1 , whereinthe on-load tap changer is at an upper part of a transformer housing.8. The on-load tap changer according to claim 1 , whereinthe on-load tap changer is on an insulating foot at a lower part of a transformer housing.9. The on-load tap changer according to claim 1 , whereinthe on-load tap changer and the choke are so connected that the two have the same voltage potential relative to ground potential.10. Use of an on-load tap changer according to in a tapped transformer. The invention relates to an on-load tap changer according to the reactor switching principle for uninterrupted load changeover between different winding taps of a tapped transformer.A regulating transformer with a tap changer is known from U.S. Pat. No. 3,175,148 A. The transformer has a main winding and a regulating ...

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Номер записи: 100