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1. 发明申请

US20220103091A1 SWITCHING VALVE 有权
公开(公告)号：US20220103091A1
公开(公告)日：2022-03-31
申请号：US17485205
申请日：2021-09-24
申请人： General Electric Technology GmbH
发明人： Stéphane Pierre BREHAUT , Guillaume DE PREVILLE , Timothy STOTT
IPC分类号： H02M7/483
摘要： There is provided a switching valve for a voltage source converter. The switching valve comprises a plurality of modules, each module including at least one switching element and at least one energy storage device, the or each switching element and the or each energy storage device in each module arranged to be combinable to selectively provide a voltage source, the switching valve including a controller configured to selectively control the switching of the switching elements to select one or more of the modules to contribute a or a respective voltage to a switching valve voltage, wherein the controller is configured to selectively carry out a module selection by: assigning each module with a respective address in an address queue; in a respective one of a plurality of sampling events, selecting one or more voltage contributing modules in order of its assigned address in the address queue; and between different sampling events, changing the order of selecting the or each voltage contributing module based on its assigned address in the address queue.

2. 发明申请

US20210249969A1 VOLTAGE SOURCE CONVERTER 有权
公开(公告)号：US20210249969A1
公开(公告)日：2021-08-12
申请号：US17270814
申请日：2019-08-19
申请人： General Electric Technology GmbH
发明人： Pablo Ariel BRIFF , Huy Quoc Si DANG , Richard S. ZHANG , Guillaume DE PREVILLE , Stéphane Pierre BREHAULT , Omar JASIM
IPC分类号： H02M7/483 , H02M1/42
摘要： In the field of high voltage direct current (HVDC) transmission, a voltage source converter comprises first and second DC terminals that are for connection to a DC network. The voltage source converter also includes at least one converter limb. The or each converter limb extends between the first and second DC terminals and includes first and second limb portions that are separated by a respective AC terminal for connection to a corresponding phase of an AC network. Each first limb portion extends between the first DC terminal and a corresponding AC terminal, and each second limb portion extends between the second DC terminal and the corresponding AC terminal. Each limb portion includes a respective chain-link converter which is defined by a plurality of series-connected switching modules which are operable in combination to provide a stepped variable voltage source. In addition the voltage source converter also includes a control apparatus that is configured to coordinate operation of the chain-link converters to cause an exchange of power between the DC and AC networks. The control apparatus evaluates the combined performance of the switching modules within at least one chain-link converter and acts to modify the coordinated operation of the chain-link converters when the combined performance of the switching modules becomes degraded to a predetermined extent.

3. 发明申请

US20220102979A1 RELATING TO POWER TRANSMISSION NETWORKS 有权
公开(公告)号：US20220102979A1
公开(公告)日：2022-03-31
申请号：US17485246
申请日：2021-09-24
申请人： General Electric Technology GmbH
发明人： Guillaume DE PREVILLE , Julian FREYTES , Jiaqi LI , Marc THOUVENIN , Omar JASIM
IPC分类号： H02J3/36
摘要： In the field of high voltage direct current (HVDC) power transmission networks, there is a need for improvements to allow a single power converter to control individual AC network voltages carried by multiple AC transmission conduits to multiple AC network elements, such as respective wind parks.
A power transmission network (10; 100) comprises a power converter (12) which has first and second DC converter terminals (14, 16) that are for connection, in use, to a DC network. The power converter (12) also includes an AC converter terminal (22) which is electrically connected to a plurality of AC transmission conduits (241, 242, 24n), each of which is for connection, in use, to a respective AC network element (261, 262, 26n) that is configured to operate at a respective individual AC network voltage. The power converter (12) further includes a primary converter controller (34) which is programmed, in use, to control the transfer of power through the power converter (12) and thereby between the DC network and the plurality of AC network elements (261, 262, 26n). The primary converter controller (34) is further programmed, in use, to control each individual AC network voltage by establishing a virtual voltage which is representative of the plurality of AC network voltages and altering a single AC converter voltage produced by the power converter (12) at the AC converter terminal (22) to adjust the virtual voltage and thereby adjust each individual AC network voltage.

4. 发明公开

US20230402935A1 ELECTRICAL ASSEMBLY 审中-公开
公开(公告)号：US20230402935A1
公开(公告)日：2023-12-14
申请号：US18249873
申请日：2021-10-14
申请人： General Electric Technology GmbH
发明人： Jari LAVAPURO , Stephane BREHAUT , Guillaume DE PREVILLE
IPC分类号： H02M5/12 , H02M7/539 , H02M1/32
CPC分类号： H02M5/12 , H02M7/539 , H02M1/325 , H01F29/02
摘要： An electrical assembly includes a converter-based electrical device and a transformer for connecting the converter-based electrical device to an AC electrical network, a first transformer side of the transformer connected to the converter-based electrical device, a second transformer side of the transformer for connection to the AC electrical network, the transformer including a number of taps, the transformer including a tap changer operable to selectively connect to the or each tap to modify a turn ratio of the transformer. The transformer includes a controller configured to selectively operate the tap changer in an AC voltage modification mode, responsive to an abnormal operating state of the electrical assembly, to modify the turn ratio of the transformer so as to modify an AC voltage at the first transformer side.

5. 发明公开

US20230141230A1 IMPROVEMENTS IN OR RELATING TO CHAIN-LINK CONVERTERS 审中-公开
公开(公告)号：US20230141230A1
公开(公告)日：2023-05-11
申请号：US17910902
申请日：2021-03-31
申请人： General Electric Technology GmbH
发明人： Stéphane BREHAUT , Guillaume DE PREVILLE
IPC分类号： H02M7/49
CPC分类号： H02M7/49 , H02M1/325
摘要： In the field of chain-link converters operable to provide a stepped variable voltage source, there is a need for an improved method of operating such a chain-link converter. A method of operating a chain-link converter, the chain-link converter including a number of series connected chain-link modules, each chain-link module including at least one switching element and an energy storage device which together are selectively operable to provide a voltage source whereby the chain-link converter is able to provide a stepped variable voltage source, including the steps of: (i) identifying one or more unhealthy chain-link modules having a reduced performance characteristic compared to one or more healthy chain-link modules having a normal performance characteristic, (ii) utilizing the healthy chain-link modules normally in the operation of the chain-link converter, and (iii) reducing the utilization of the or each unhealthy chain-link module.

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