公开(公告)号：US09866138B2

公开(公告)日：2018-01-09

申请号：US15128262

申请日：2015-03-23

Applicant: General Electric Technology GmbH

Inventor： Colin Donald Murray Oates ,  Kevin Dyke ,  David Reginald Trainer

IPC: H02M1/14 ,  H02M1/15 ,  H02M7/219 ,  H02M7/493 ,  H02M7/483 ,  H02M5/458 ,  H02M1/12 ,  H02M7/487 ,  H02M1/00 ,  H02M7/217

CPC classification number: H02M5/458 ,  H02M1/12 ,  H02M1/14 ,  H02M1/15 ,  H02M7/217 ,  H02M7/219 ,  H02M7/483 ,  H02M7/487 ,  H02M7/493 ,  H02M7/5388 ,  H02M2001/0058 ,  H02M2007/4835 ,  Y02B70/1491

Abstract: A voltage source converter of the controlled transition bridge type, having three phase limbs, each phase limb having a high &de director switch (Sw1 Sw3, Sw5) and a low side director switch (Sw4, Sw6, Sw2) connecting a respective DC terminal (DC+, DC−) to an AC node for that phase limb. Chain-link circuits for each phase limb comprise a plurality of series connect cells, each cell having an energy storage element that can be selectively connected in series or bypassed. The chain-link circuits are operated in a voltage mode to provide a defined voltage transition at the AC node during a transition between one director switch being turned off and the other director switch being turned on. Chain-link circuits are connected to a common node such that, in use, a current can flow from one phase limb to another via the respective chain-link circuits.

公开(公告)号：US20200177096A1

公开(公告)日：2020-06-04

申请号：US16608166

申请日：2018-03-26

Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH

Inventor： Rajaseker Ginnareddy ,  David Reginald Trainer ,  Carl David Barker

IPC: H02M7/483 ,  H02M1/12 ,  H02M1/14 ,  H02M7/5387

Abstract: A converter (30) comprises first and second DC terminals (32,34) connectable in use to a DC network (40), the converter (30) including a converter limb (36) extending between the DC terminals (32,34), the converter limb (36) including first and second limb portions separated by an AC terminal (38), the AC terminal (38) connectable in use to an AC voltage, each limb portion including at least one director switch (44) connected in series with a waveform synthesizer between the AC terminal (44) and a respective one of the first and second DC terminals (32,34), the waveform synthesizers operable to control the modulation of an AC voltage waveform at the AC terminal (38), each director switch (44) operable to switch the respective waveform synthesizer into and out of circuit between the respective DC terminal (32,34) and the AC terminal (38); and a controller (56) programmed to selectively control the switching of the director switches (44) to switch both of the limb portions into circuit concurrently to form a current conduction path between the DC terminals (32,34), the current conduction path configured to carry a current for presentation to the DC network (40), wherein the controller (56) is programmed to selectively operate the waveform synthesizers to inject at least one harmonic component to modulate the AC voltage waveform at the AC terminal (38) so that during the formation of the current conduction path the magnitude of the modulated AC voltage waveform is lower than the magnitude of the fundamental component of the AC voltage waveform, and wherein the at least one harmonic component is a non-triplen harmonic component.

公开(公告)号：US09825554B2

公开(公告)日：2017-11-21

申请号：US15123091

申请日：2015-03-04

Applicant: General Electric Technology GmbH

Inventor： David Reginald Trainer ,  Omar Fadhel Jasim ,  Jonathan Charles Clare

IPC: H02M7/217 ,  H02M7/483 ,  H02M7/219 ,  H02M1/00

CPC classification number: H02M7/2173 ,  H02M7/217 ,  H02M7/219 ,  H02M7/483 ,  H02M2001/0058 ,  H02M2007/4835 ,  Y02B70/1491

Abstract: A voltage source converter comprises first and second DC terminals for connection to a DC network, and at least one limb connected between the first and second DC terminals. The or each limb includes: a phase element including two parallel-connected sets of series-connected switching elements connected in an H-bridge to define first and second diagonal switching pairs, a respective junction between each set of series-connected switching elements defining an AC terminal for connection to an AC network; and a sub-converter configured to be controllable to act as a voltage waveform synthesizer. The voltage source converter further includes a controller to operate the sub-converter to selectively synthesize a driving commutation voltage to modify a DC side current at a DC side of the H-bridge to minimize any differences in magnitude and direction between the DC side current and an AC side current at an AC side of the H-bridge.

公开(公告)号：US20160241127A1

公开(公告)日：2016-08-18

申请号：US15027669

申请日：2014-10-06

Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH

Inventor： Omar Fadhel Jasim ,  David Reginald Trainer

IPC: H02M1/12 ,  H02M7/04 ,  H02M1/14

CPC classification number: H02M1/12 ,  H02M1/14 ,  H02M7/04 ,  H02M7/483 ,  H02M2007/4835

Abstract: A voltage source converter includes at least one limb connected between DC terminals, the or each limb including: a phase element including switching elements to interconnect a DC electrical network and an AC electrical network; an auxiliary sub-converter configured to be controllable to act as a waveform synthesizer to modify a first DC voltage presented to the DC electrical network; and a tertiary sub-converter connected in parallel with the electrical block and controllable to act as a waveform synthesizer to modify a second DC voltage presented to a DC side of the phase element, the tertiary sub-converter (39) including at least one energy storage device. The voltage source converter includes a controller configured to selectively control the or each tertiary sub-converter to synthesize at least one tertiary voltage component so as to transfer energy to or from that tertiary sub-converter and thereby regulate an energy level of that tertiary sub-converter.

Abstract translation: 电压源转换器包括连接在直流端子之间的至少一个支路，该或每个支路包括：相元件，包括用于互连DC电网和交流电网的开关元件; 辅助子转换器被配置为可控制以用作波形合成器以修改呈现给DC电网络的第一DC电压; 以及与所述电气块并联连接并且可控制成波形合成器以修改呈现给所述相位元件的DC侧的第二DC电压的三次子转换器，所述第三子转换器（39）包括至少一个能量 储存设备。 电压源转换器包括控制器，其被配置为选择性地控制或每个第三子转换器以合成至少一个第三电压分量，以便将能量转移到该三次子转换器或从该三次子转换器传输能量，从而调节该次级转换器的能级， 转换器。

公开(公告)号：US20160141876A1

公开(公告)日：2016-05-19

申请号：US14896907

申请日：2014-06-06

Applicant: ALSTOM TECHNOLOGY LTD ,  General Electric Technology GmbH

Inventor： Colin Donald Murray Oates ,  David Reginald Trainer ,  Ralph Feldman ,  Michael Marc Claude Merlin ,  Timothy Charles Green

IPC: H02J3/18

CPC classification number: H02J3/18 ,  H02J3/36 ,  H02M7/483 ,  H02M7/49 ,  H02M2001/0003 ,  H02M2007/4835

Abstract: An alternate arm converter includes at least one converter limb that defines first and second limb portions. Each limb portion includes at least one director switch connected in series with a chain-link converter between one of two DC terminals and an AC terminal of the converter. The chain-link converters are operable to generate a voltage waveform at the AC terminal, and the director switches are operable to switch the respective chain-link converters in and out of circuit between the respective DC terminal and the AC terminal. The converter also includes a controller configured to selectively control the switching of each director switch to form a current circulation path including each limb portion and the DC network. The controller, during formation of the current circulation path, forces an alternating current to flow through the current circulation path to transfer energy between the chain-link converters of the limb portions.

Abstract translation: 替代臂转换器包括限定第一和第二肢体部分的至少一个转换器肢体。 每个肢体部分包括至少一个导向开关，其与两个DC端子之一和转换器的AC端子之间的链节转换器串联连接。 链式转换器可操作以在AC端子处产生电压波形，并且导向开关可操作以在相应的DC端子和AC端子之间切换各个链节转换器进出电路。 该转换器还包括控制器，其被配置为选择性地控制每个导向开关的切换以形成包括每个肢体部分和DC网络的电流循环路径。 在形成当前循环路径期间，控制器迫使交流电流流过电流循环路径以在肢体部分的链节转换器之间传递能量。