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公开(公告)号：US11705296B2
公开(公告)日：2023-07-18
申请号：US17825472
申请日：2022-05-26
CPC分类号： H01H47/325 , H01H9/542 , H01H47/02 , H01H2009/544
摘要： A system includes a contactor operatively connected to a coil for actuating the contactor to open and close a circuit. A pass element includes a source, a drain, and a gate, wherein the drain is electrically connected to the coil, and wherein the coil is in series between the pass element and ground. A voltage source is connected to the source of the pass element to pass current into the coil when the pass element is in a pass state. A current source control circuit with economizer is operatively connected to the gate of the pass element. A delay circuit is operatively connected to the current source control circuit with economizer and to a command line to command a lower current for holding the contactor closed after a delay has expired for the contactor to transition.
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公开(公告)号：US20210296069A1
公开(公告)日：2021-09-23
申请号：US16821654
申请日：2020-03-17
摘要： A system includes a contactor operatively connected to a coil for actuating the contactor to open and close a circuit. A pass element includes a source, a drain, and a gate, wherein the drain is electrically connected to the coil, and wherein the coil is in series between the pass element and ground. A voltage source is connected to the source of the pass element to pass current into the coil when the pass element is in a pass state. A current source control circuit with economizer is operatively connected to the gate of the pass element. A delay circuit is operatively connected to the current source control circuit with economizer and to a command line to command a lower current for holding the contactor closed after a delay has expired for the contactor to transition.
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公开(公告)号：US20210288605A1
公开(公告)日：2021-09-16
申请号：US16817977
申请日：2020-03-13
摘要： A system and method for controlling a DC midpoint terminal voltage of a three level inverter is provided. The method includes receiving an input power signal at a three level motor control system that includes a three level inverter, the three level inverter powering an electric motor, determining, in the three level motor control system, a speed value of the electric motor, and adjusting a zero-sequence inverter output voltage to adjust a midpoint voltage at the DC midpoint based on the determined speed value.
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公开(公告)号：US20210288567A1
公开(公告)日：2021-09-16
申请号：US16815199
申请日：2020-03-11
摘要： A system including a generator and a controller. The generator includes a permanent magnet generator (PMG), and an exciter. The controller manages operations of the generator. The controller includes an alternating current to direct current (AC-to-DC) converter that generates a direct current (DC) voltage, an exciter drive that provides a DC current to the exciter of the generator using the DC voltage created by the AC-to-DC converter in accordance with the control signal, and a regulator controller that drives the active AC-to-DC converter.
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公开(公告)号：US20230251329A1
公开(公告)日：2023-08-10
申请号：US17665867
申请日：2022-02-07
CPC分类号： G01R31/62 , H02J3/02 , H02J2310/44 , B64D41/007
摘要： A method includes performing a test for transformer rectifier unit (TRU) backfeed protection by removing AC power supplied to the TRU but keeping the TRU contactor closed for a first predetermined span of time. The method includes observing the TRU for a second predetermined span of time. The method includes determining if the contactor opens during the second span of time, that a TRU backfeed protection is functional and passes the test, and determining if the contactor does not open during the second span of time, that the TRU backfeed protection has failed the test.
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公开(公告)号：US20230145311A1
公开(公告)日：2023-05-11
申请号：US17522124
申请日：2021-11-09
发明人： Jordan K. Vanevenhoven , Jeffrey D. Myroth , Jef William Good , Shane R. Traser , John N. Buzzard , Kyle Stephen Ives
IPC分类号： H01H47/00
CPC分类号： H01H47/001
摘要： A closing mechanism controller includes contactor operating logic that generates a software or firmware based closing mechanism command signal. The controller also includes hardware interlock circuitry that generates an interlock signal, the hardware interlock circuity being configured to compare an interlock signal to the software based closing mechanism command signal and to provide an enable signal to the closing mechanism when the interlock signal matches the closing mechanism command signal.
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公开(公告)号：US20230142245A1
公开(公告)日：2023-05-11
申请号：US17521728
申请日：2021-11-08
CPC分类号： G01R31/343 , H02P9/305 , H02K21/02 , H02K21/14
摘要： In accordance with at least one aspect of this disclosure, a method can include measuring a voltage across a DC link of a generator system when a generator exciter is inactive and a generator permanent magnet is active, and detecting a short or open permanent magnet generator (SOPMG) fault condition in the generator system with a DC link monitor operatively connected to measure the voltage across the DC link.
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公开(公告)号：US20210297024A1
公开(公告)日：2021-09-23
申请号：US16821234
申请日：2020-03-17
发明人： Jordan K. Vanevenhoven , Jeffrey D. Myroth , Shane R. Traser , Jef William Good , John N. Buzzard , Kyle Ives
摘要： A system includes a first AC bus configured to supply power from a first generator. A first generator line contactor (GLC) selectively connects the first AC bus to the first generator. A second AC bus is configured to supply power from a second generator. A second GLC selectively connecting the second AC bus to the second generator. An auxiliary generator line contactor (ALC) is connected to selectively supply power to the first and second AC buses from an auxiliary generator. A first bus tie contactor (BTC) electrically connects between the first GLC and the ALC. A second BTC electrically connects between the ALC and the second GLC. A ram air turbine (RAT) automatic deployment controller is operatively connected to automatically deploy a RAT based on the combined status of the first GLC, the second GLC, the ALC, the first BTC, and the second BTC.
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公开(公告)号：US20210296885A1
公开(公告)日：2021-09-23
申请号：US16821385
申请日：2020-03-17
摘要： A method includes detecting a failure in a contactor economizer that is configured to provide a first current to a coil of a contactor to close the contactor, and to provide a second current lower than the first current to the coil after the contactor is closed to hold the contactor closed. The method includes at least one of: driving contactor actuation based on economizer failure status; and/or signaling failure of the economizer through built in test (BIT) indication.
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公开(公告)号：US12099096B2
公开(公告)日：2024-09-24
申请号：US17665867
申请日：2022-02-07
CPC分类号： G01R31/62 , H02J3/02 , B64D41/007 , B64D2221/00 , H02J2310/44
摘要： A method includes performing a test for transformer rectifier unit (TRU) backfeed protection by removing AC power supplied to the TRU but keeping the TRU contactor closed for a first predetermined span of time. The method includes observing the TRU for a second predetermined span of time. The method includes determining if the contactor opens during the second span of time, that a TRU backfeed protection is functional and passes the test, and determining if the contactor does not open during the second span of time, that the TRU backfeed protection has failed the test.
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