公开(公告)号：US20170126008A1

公开(公告)日：2017-05-04

申请号：US15129526

申请日：2015-03-27

Applicant: General Electric Company

Inventor： Jie SHEN ,  Zhihui YUAN ,  Christof Martin SIHLER ,  Stefan SCHROEDER ,  Mark Aaron CHAN ,  Fei XU

IPC: H02J3/36 ,  H02M7/44 ,  H02M7/04

Abstract: A modular substation (10) for subsea applications includes a plurality of modular DC/AC converters (32) configured for converting DC electrical power transmitted along a DC transmission link (24) into AC electrical power for supplying to a plurality of subsea loads (56). The plurality of modular DC/AC converters (32) is configured to couple in series to the DC transmission link (24) and couple in parallel to an AC distribution network (52). At least a first modular DC/AC converter (32) is configured to be selectively electrically and mechanically disconnected from the DC transmission link (24) and the AC distribution network (52) to facilitate maintenance of the first modular DC/AC converters (32) while the AC distribution network (52) continues to supply AC electrical power to at least one of the plurality of subsea loads (56). The modular substation (10) also comprises protection and bypass circuits (26) intended to isolate faulty DC/AC converters (32) and to facilitate safe maintenance and repair.

公开(公告)号：US20190089350A1

公开(公告)日：2019-03-21

申请号：US16118518

申请日：2018-08-31

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Bo QU ,  Ying ZHANG ,  Marius Michael MECHLINSKI ,  Saijun MAO ,  Jingkui SHI ,  He XU ,  Zhihui YUAN ,  Jie SHEN ,  Stefan SCHROEDER

IPC: H03K17/30 ,  H02M1/088

Abstract: The present disclosure relates to a method for controlling voltage balance of a serialized power switching device, comprising generating a reference voltage based on actual individual voltage of each switch of the serialized power switching device or setting a reference voltage based on supplied voltage to the serialized power switching device; determining an individual blocking voltage mismatch of at least one switch when existing a difference between the reference voltage and the actual individual voltage of at least one switch, wherein the individual voltage mismatch is based on the difference between the reference voltage and the actual individual voltage; calculating an individual delay mismatch for the at least one switch; and compensating the individual delay mismatch for the at least one switch. The present disclosure also relates to a system for controlling voltage balance of a serialized power switching device. The present disclosure also relates to a power switching device.

公开(公告)号：US20180323697A1

公开(公告)日：2018-11-08

申请号：US15772953

申请日：2016-10-25

Applicant: General Electric Company

Inventor： Zhihui YUAN ,  Richard S. ZHANG ,  Stefan SCHROEDER ,  Yingqi ZHANG ,  Jie SHEN ,  Fan ZHANG

IPC: H02M1/32 ,  H03K17/081 ,  H02M5/458 ,  H02M1/088

CPC classification number: H02M1/32 ,  H02M1/088 ,  H02M5/4585 ,  H02M2001/325 ,  H03K17/08104 ,  H03K17/08116 ,  H03K17/107 ,  H03K17/127

Abstract: A method for controlling a plurality of series connected switch modules each including at least two parallel connected electronic switches, the method includes the step of, in response to failure of any electronic switch of one or more switch modules, turning on any non-faulty electronic switch of one or more faulty switch modules when the electronic switches of other non-faculty switch modules are controlled to be turned on.

公开(公告)号：US20180342943A1

公开(公告)日：2018-11-29

申请号：US15777919

申请日：2016-12-19

Applicant: General Electric Company

Inventor： Zhihui YUAN ,  Stefan SCHROEDER ,  Jie SHEN ,  Mohamed Ahmed Abdelmohsen HASHEM ,  Yunzheng CHEN

IPC: H02M1/12 ,  H02M5/42 ,  H02M1/32

Abstract: A power conversion system includes one or more power conversion devices coupled to a grid connection. Each of the power conversion devices includes a power converter for converting a first multiphase current provided by the grid connection into a second current; a grid side filter coupled between the grid connection and an input of the power converter; a load side filter coupled to an output of the power converter; neutral points of the grid side filter and the load side filter connected together to form a first node; wherein the first node is not directly grounded.

公开(公告)号：US20180337109A1

公开(公告)日：2018-11-22

申请号：US15981975

申请日：2018-05-17

Applicant: General Electric Company

Inventor： Saijun MAO ,  Bo QU ,  Jingkui SHI ,  He XU ,  Jie SHEN ,  Lin LAN ,  Rui LI ,  Zhihui YUAN ,  Alistair Martin WADDELL ,  Stefan SCHROEDER ,  Marius Michael MECHLINSKI ,  Mark Aaron CHAN

IPC: H01L23/473 ,  H01L23/367 ,  H01L25/07

CPC classification number: H01L23/473 ,  H01L25/072

Abstract: The present disclosure relates to an integrated power semiconductor packaging apparatus and a power converter containing the integrated power semiconductor packaging apparatus. The integrated power semiconductor packaging apparatus comprises a plurality of power semiconductor devices and an electrically insulative substrate formed integrally. The electrically insulative substrate comprises a flat surface, at least one separation wall protruding from the flat surface and a flow channel inside the electrically insulative substrate. The at least one separation wall is configured to separate the flat surface into a plurality of flat areas, and each of the plurality of flat areas is configured to receive one of the plurality of power semiconductor devices. The flow channel is configured for allowing a coolant flowing through to remove heat from the plurality of power semiconductor devices.

公开(公告)号：US20180306853A1

公开(公告)日：2018-10-25

申请号：US15766132

申请日：2015-10-05

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Max-Josef KELL ,  Stefan SCHROEDER ,  Jie SHEN ,  Zhihui YUAN ,  Yunzheng CHEN ,  Mohamed HASHEM

IPC: G01R31/08 ,  H02H1/00 ,  G01R31/02

CPC classification number: G01R31/086 ,  G01R31/025 ,  H02H1/0007 ,  H02H3/105 ,  H02H3/162 ,  H02H3/36 ,  H02H7/1216 ,  H02H7/122 ,  H02H7/125 ,  H02H7/22 ,  H02J3/36 ,  Y02E60/60

Abstract: A drive system includes a current sensor configured to generate a first current signal representative of a current flowing in one or more electrical devices electrically coupled together through a power supply bus, a power output bus, and a common ground. The drive system also includes a voltage sensor configured to generate a first voltage signal representative of a voltage with respect to the common ground in the one or more electrical devices. The drive system further includes a ground fault detection controller configured to determine a ground fault in the one or more electrical devices based on a change in at least one of the first current signal and the first voltage signal.

公开(公告)号：US20180210031A1

公开(公告)日：2018-07-26

申请号：US15861707

申请日：2018-01-04

Applicant: General Electric Company

Inventor： Marius Michael MECHLINSKI ,  Stefan SCHROEDER ,  Jie SHEN ,  Fan ZHANG ,  Zhihui YUAN

IPC: G01R31/327 ,  H02H3/20 ,  H02H3/08 ,  H02H5/04

CPC classification number: G01R31/3275 ,  H02H3/08 ,  H02H3/20 ,  H02H5/04 ,  H02M1/088 ,  H02M1/32 ,  H02M2001/322 ,  H03K17/102 ,  H03K2217/0027

Abstract: A method for protecting a circuit is provided, wherein the circuit comprises a plurality of switch devices connected in series. The method comprises detecting a failure risk indicator of each switch device; determining whether each switch device has a failure risk based on the corresponding failure risk indicator; and making each of the switch device(s) having the failure risk in a constant on-state to eliminate the failure risk and prevent a failure of the switch device optionally if a number of the switch device(s) which have or had the failure risk is less than or equal to a preset value.