公开(公告)号：US20170077797A1

公开(公告)日：2017-03-16

申请号：US15309398

申请日：2015-05-12

Applicant: General Electric Technology GmbH

Inventor： Timothy James STOTT ,  Francisco Jose MORENO MUÑOZ ,  Philip Robin COUCH

IPC: H02M1/088 ,  G01R31/02

CPC classification number: H02M1/088 ,  G01R31/02 ,  H02M1/32 ,  H02M7/483 ,  H02M2001/0003 ,  H02M2001/325 ,  H02M2007/4835

Abstract: A method of identifying a faulty sub-module of a chain-link converter is provided, wherein the chain-link converter includes a plurality of sub-modules with each sub-module including at least one switching element and an energy storage device which together are selectively operable to provide a voltage source. The method comprises the steps of: measuring a switching characteristic of each sub-module of the chain-link converter; establishing a switching characteristic signature of the chain-link converter; and identifying the or each sub-module with a switching characteristic that deviates from the switching characteristic signature as being a faulty sub-module.

Abstract translation: 提供了一种识别链式转换器的故障子模块的方法，其中链式转换器包括多个子模块，每个子模块包括至少一个开关元件和能量存储装置， 可选地可操作地提供电压源。 该方法包括以下步骤：测量链式转换器的每个子模块的开关特性; 建立链式转换器的切换特性签名; 并且将具有偏离于切换特性签名的切换特性识别为每个子模块作为有故障的子模块。

公开(公告)号：US20210328422A1

公开(公告)日：2021-10-21

申请号：US17270369

申请日：2019-08-14

Applicant: General Electric Technology GmbH

Inventor： Carl D. BARKER ,  Colin Charnock DAVIDSON ,  John Lewis OUTRAM ,  Timothy James STOTT ,  Robert Stephen WHITEHOUSE

IPC: H02H7/26 ,  H02J3/36

Abstract: The present disclosure relates to an electronic valve apparatus for a high voltage direct current, HVDC, power transmission system. The electronic valve apparatus comprises a first device chain (301) including a plurality of first devices (302, 303) connected in series between an input node (330) and an output node (332) of the electronic valve apparatus (300, 400, 500). Each of the plurality of first devices (302, 303) has an asymmetric transfer function configured substantially to block current flow through the device in a first direction, and the plurality of first devices (302, 303) are connected such that they all block current flow in the same direction. The electronic valve apparatus also includes a second device chain (311) including a plurality of second devices (312, 313) connected in series between the input node (330) and the output node (332). Each of the plurality of second devices (312, 313) has an asymmetric transfer function configured substantially to block current flow through the device in a first direction, and the plurality of second devices (312, 313) are connected such that they all block current flow in the same direction. The second device chain (311) is connected in parallel with the first device chain (301).

公开(公告)号：US20210135662A1

公开(公告)日：2021-05-06

申请号：US16480918

申请日：2017-08-22

Applicant: General Electric Technology GmbH

Inventor： Colin Charnock DAVIDSON ,  Adrian KEITLEY ,  Timothy James STOTT ,  Jérôme GREGOIRE

IPC: H03K17/082

Abstract: In the field of voltage source converters for high voltage direct current (HVDC) power transmission there is provided a protection arrangement for a switching device. The protection arrangement comprises a thyristor that has main current-carrying terminals which in use are connected in reverse parallel with a switching device to be protected, whereby during normal operation of the switching device a reverse voltage is applied to the thyristor. The protection arrangement also includes a trigger circuit that is operatively connected with a gate control terminal of the thyristor. The trigger circuit is configured to apply a voltage to the gate control terminal of the thyristor when the reverse voltage applied to the thyristor reaches a safety threshold voltage whereby the thyristor fails and presents an irreversible short-circuit across the main current-carrying terminals of the switching device.

公开(公告)号：US20160241125A1

公开(公告)日：2016-08-18

申请号：US15025766

申请日：2014-09-29

Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH

Inventor： Philip Robin COUCH ,  Timothy James STOTT

IPC: H02M1/08 ,  H04B10/079

CPC classification number: H02M1/08 ,  H02J3/1857 ,  H02M7/483 ,  H02M2001/0003 ,  H02M2007/4835 ,  H04B10/0793 ,  Y02E40/12 ,  Y02E40/16 ,  Y02E40/26

Abstract: An electrical apparatus comprises a chain-link converter which includes a plurality of chain-link sub-modules each of which is operable to provide a voltage source. The electrical apparatus also includes a switching control unit to control the chain-link sub-modules. The switching control unit is operatively interconnected with each chain-link sub-module by an electromagnetic radiation conduit. The length of the electromagnetic radiation conduit between the switching control unit and at least one chain-link sub-module differs from the length of the electromagnetic radiation conduit between the switching control unit and at least one other chain-link sub-module. The switching control unit is configured to discern a difference in the time taken for an electromagnetic signal to propagate through each different-length electromagnetic radiation conduit to thereby identify the or each chain-link sub-module associated with each different-length electromagnetic radiation conduit.

Abstract translation: 电气设备包括链式转换器，其包括多个链节子模块，每个链接子模块可操作以提供电压源。 电气设备还包括控制链式子模块的切换控制单元。 切换控制单元通过电磁辐射导管与每个链节子模块可操作地互连。 开关控制单元和至少一个链节子模块之间的电磁辐射导管的长度与开关控制单元和至少一个其它链节子模块之间的电磁辐射导管的长度不同。 开关控制单元被配置为识别电磁信号通过每个不同长度的电磁辐射导管传播的时间差，从而识别与每个不同长度的电磁辐射导管相关联的或每个链节子模块。