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公开(公告)号：US10439393B2
公开(公告)日：2019-10-08
申请号：US15339266
申请日：2016-10-31
Applicant: General Electric Company
Inventor： Antonio Caiafa , Ahmed Elasser , Dong Dong
IPC: H02J3/00
Abstract: A switching system includes a switching assembly and a transformer. The switching assembly includes multiple sets of switch cells conductively coupled to different power conductors that extend between a power source and a load and conduct different phases of current. Each set of switch cells controls conduction of a different phase of current to the load. The transformer has a primary winding and multiple secondary windings that are conductively coupled to the sets of switch cells. Responsive to receiving an activation control signal from the transformer via the secondary windings, the sets of switch cells are configured to activate to conduct the multiple phases of current from the power source to the load along the power conductors.
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公开(公告)号：US20180330862A1
公开(公告)日：2018-11-15
申请号：US15594745
申请日：2017-05-15
Applicant: General Electric Company
Inventor： William James Premerlani , Omar Mendez Zamora , Enrique Betancourt Ramirez , Ibrahima Ndiaye , Ahmed Elasser
CPC classification number: H01F27/004 , H01F29/025
Abstract: A flexible transformer system includes conductive windings extending around a magnetic core of a transformer phase and impedance-varying windings extending around the magnetic core of the transformer phase. The conductive windings and the impedance-varying windings are configured to conduct electric current around the magnetic core of the transformer phase. The system includes an impedance switch coupled with the impedance-varying windings and with the conductive windings. The impedance switch is configured to change an impedance of the system by changing which impedance-varying winding of the impedance-varying windings is conductively coupled with the conductive windings and which impedance-varying winding of the impedance-varying windings is disconnected from the conductive windings.
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23.发明申请公开(公告)号：US20180164362A1
公开(公告)日：2018-06-14
申请号：US15379160
申请日：2016-12-14
Applicant: General Electric Company
Inventor： William James Premerlani , Ibrahima Ndiaye , Kum-Kang Huh , Ahmed Elasser
CPC classification number: G01R31/007 , B60L11/1809 , B60L2210/10 , B60L2270/00 , G01R15/18 , G01R19/0092 , G01R31/025 , G01R31/08 , H02M1/32 , Y10S903/903
Abstract: The DC leakage current detector for detecting leakage current in a DC bus includes a pair of transformers each comprising a magnetic core and excitation and detection windings would about the magnetic core, with the magnetic core positionable about a pair of conductors that create a magnetic field that is a sum of currents in the conductors. An excitation and biasing circuit is connected to the excitation winding in each transformer to inject a current signal thereto that creates a changing magnetic flux in the core of each transformer and a detector output connected to the detection winding in each transformer to receive a voltage therefrom generated responsive to the magnetic flux in the core of each transformer, wherein the voltage on the detection windings provides a net voltage at the detector output whose value is indicative of a presence of a leakage current on the DC bus.
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公开(公告)号：US09856722B2
公开(公告)日：2018-01-02
申请号：US14808713
申请日：2015-07-24
Applicant: General Electric Company
Inventor： Dong Dong , Antonio Caiafa , Mohammed Agamy , Ahmed Elasser
IPC: E21B43/12 , H03K17/10 , H03K17/691 , H02M1/08 , E21B41/00 , H05G1/58 , H03K17/687
CPC classification number: E21B43/128 , E21B41/0085 , H02M1/08 , H03K17/102 , H03K17/6874 , H03K17/691 , H05G1/58 , Y10T307/406 , Y10T307/76
Abstract: Power systems and methods are disclosed herein. The systems and methods use a switching system coupled with a power source and subterranean pumps for pumping a resource from beneath a surface of earth. A first capacitor is between a first switching device and a first transformer, and stores electric energy received from the first transformer to activate the first switching device. A bias capacitor is between the first capacitor and the first switching device, and receives a bias voltage via a second transformer. The bias capacitor applies the bias voltage to the first switching device to prevent the first switching device from activating unless a combination of the voltage received by the first switching device via the first transformer and the bias voltage is at least as large as the activation voltage of the first switching device.
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公开(公告)号：US20170022766A1
公开(公告)日：2017-01-26
申请号：US14808783
申请日：2015-07-24
Applicant: General Electric Company
Inventor： Dong Dong , Antonio Caiafa , Mohammed Agamy , Ahmed Elasser , Philip Michael Cioffi
CPC classification number: H02J4/00 , E21B43/128
Abstract: A switch assembly includes one or more solid state semiconductor switches configured to be disposed within a downhole pipe assembly. The one or more switches are configured to operate in a closed state to conduct electric current supplied by a power source disposed above a surface to pumps disposed beneath the surface to cause the pumps to extract a resource from beneath the surface via the pipe assembly. The one or more switches also are configured to operate in an open state to stop conducting the electric current from the power source to the pumps.
Abstract translation: 开关组件包括被配置为设置在井下管组件内的一个或多个固态半导体开关。 一个或多个开关被配置为在闭合状态下操作以传导由设置在表面上方的电源供应的电流，以泵送设置在表面下方的泵，以使得泵经由管组件从表面下方提取资源。 一个或多个开关还被配置为在打开状态下操作以停止将电流从电源传导到泵。
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Patent Agency Ranking
公开(公告)号：US10374591B2
公开(公告)日：2019-08-06
申请号：US15397443
申请日：2017-01-03
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Sayan Acharya , Han Peng , Maja Harfman Todorovic , Ahmed Elasser , Robert Thomas
IPC: H01L29/16 , H01L29/20 , H01L29/24 , H03K17/06 , H03K17/16 , H01L29/778 , H03K17/0812
Abstract: Systems and methods provided herein relate to a gate drive circuit for controlling operation of a wide bandgap semiconductor switch. The systems and methods receive a control signal and configuring an operation signal configured to activate a wide bandgap switch (WBG switch). A profile of the operation signal being based on electrical characteristics of first and second shaping circuits. The systems and methods further deliver the operation signal to the WBG switch.
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公开(公告)号：US20190068045A1
公开(公告)日：2019-02-28
申请号：US15682940
申请日：2017-08-22
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Robert James Thomas , Ahmed Elasser
IPC: H02M1/08 , H01F27/42 , H01F27/29 , H02M1/32 , H02M1/44 , H05K1/11 , H05K1/18 , H05K1/16 , H05K1/02
Abstract: A power electronics circuit is disclosed that includes a switching circuit comprising a first solid-state device coupled in series with a second solid-state device, with at least the first solid-state device comprising a solid-state switch having a gate terminal. The power electronics circuit also includes a current sense transformer positioned between the first and second solid-state devices and configured to sense a current flowing on a conductive trace connecting the first and second solid-state devices, and a controller coupled to the switching circuit and the current sense transformer so as to be in operable communication therewith. The controller is programmed to receive a current sense signal from the current sense transformer indicative of the current flowing on the conductive trace and modulate a gate voltage to the gate terminal of the first solid-state device based on the received current sense signal, so as to control switching thereof.
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公开(公告)号：US10203363B2
公开(公告)日：2019-02-12
申请号：US15379160
申请日：2016-12-14
Applicant: General Electric Company
Inventor： William James Premerlani , Ibrahima Ndiaye , Kum-Kang Huh , Ahmed Elasser
Abstract: The DC leakage current detector for detecting leakage current in a DC bus includes a pair of transformers each comprising a magnetic core and excitation and detection windings would about the magnetic core, with the magnetic core positionable about a pair of conductors that create a magnetic field that is a sum of currents in the conductors. An excitation and biasing circuit is connected to the excitation winding in each transformer to inject a current signal thereto that creates a changing magnetic flux in the core of each transformer and a detector output connected to the detection winding in each transformer to receive a voltage therefrom generated responsive to the magnetic flux in the core of each transformer, wherein the voltage on the detection windings provides a net voltage at the detector output whose value is indicative of a presence of a leakage current on the DC bus.
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公开(公告)号：US20180123468A1
公开(公告)日：2018-05-03
申请号：US15339266
申请日：2016-10-31
Applicant: General Electric Company
Inventor： Antonio Caiafa , Ahmed Elasser , Dong Dong
IPC: H02M5/293
CPC classification number: H02J3/005
Abstract: A switching system includes a switching assembly and a transformer. The switching assembly includes multiple sets of switch cells conductively coupled to different power conductors that extend between a power source and a load and conduct different phases of current. Each set of switch cells controls conduction of a different phase of current to the load. The transformer has a primary winding and multiple secondary windings that are conductively coupled to the sets of switch cells. Responsive to receiving an activation control signal from the transformer via the secondary windings, the sets of switch cells are configured to activate to conduct the multiple phases of current from the power source to the load along the power conductors.
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公开(公告)号：US09960687B2
公开(公告)日：2018-05-01
申请号：US15174042
申请日：2016-06-06
Applicant: General Electric Company
Inventor： Ahmed Elasser , Mohammed Agamy , Kum Kang Huh
CPC classification number: H02M3/33507 , H02M1/08 , H02M3/33561 , H02M3/33584 , H02M3/337 , H02M7/4807 , H02M2001/0058 , H02M2001/0093 , H02M2007/4815 , Y02B70/1441 , Y02B70/1491
Abstract: According to some embodiments, an electronic drive circuit is disclosed. The electronic drive circuit includes an energy storage device and a first bridge circuit coupled to the energy storage device. The first bridge circuit includes at least one leg having two switches. The electronic drive circuit also includes a transformer. The transformer includes a first winding coupled to the first bridge circuit and a second winding coupled to the energy storage device through a center tap. The electronic drive circuit further includes a second bridge circuit coupled to the second winding of the transformer. The second bridge circuit includes a pair of switches operable to conduct in both directions and block voltage in both directions. The electronic drive circuit additionally includes a DC bus coupled to the second bridge circuit and a controller, which is configured to buck or boost a DC voltage from the energy storage device to supply to the DC bus as well as buck or boost a DC voltage from the DC bus to supply to the energy storage device.
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