公开(公告)号：US20160072407A1

公开(公告)日：2016-03-10

申请号：US14888692

申请日：2014-04-03

Applicant: ALSTOM TECHNOLOGY LTD

Inventor： David Reginald TRAINER ,  Kevin J. DYKE ,  Colin OATES

IPC: H02M7/68 ,  H02J5/00 ,  H02J3/36

CPC classification number: H02M7/68 ,  H02J3/36 ,  H02J5/00 ,  H02M1/083 ,  H02M1/12 ,  H02M1/38 ,  H02M7/219 ,  H02M7/483 ,  H02M2001/0058 ,  H02M2007/4835

Abstract: A voltage source converter includes a converter limb having limb portions separated by an AC terminal and extending between DC terminals, each limb portion including a primary switching element to switch the limb portion into and out of circuit. The converter further includes an auxiliary limb. The primary switching element of each limb portion is switchable to switch the auxiliary limb into and out of circuit with the corresponding limb portion. The converter further includes a control unit to, in one mode, inject a circulation current that flows in one direction in one of the limb portions and minimize a current flowing in the opposite direction in that limb portion. Each primary switching element switches the respective limb portion into or out of circuit following the minimization of the limb portion current by the circulation current.

Abstract translation: 电压源转换器包括具有由AC端子分隔并在DC端子之间延伸的分支部分的转换器臂，每个肢体部分包括用于将肢体部分切换到电路中的主开关元件。 转换器还包括辅助肢体。 每个肢体部分的主要开关元件可切换，以使辅助肢体与相应的肢体部分进入和离开电路。 转换器还包括一个控制单元，以一种模式注入在一个肢体部分中沿一个方向流动的循环电流，并使在该肢体部分中沿相反方向流动的电流最小化。 每个初级开关元件将肢体部分电流的最小化通过循环电流切换到相应的肢体部分进入或离开电路。

公开(公告)号：US20170264187A1

公开(公告)日：2017-09-14

申请号：US15510398

申请日：2015-08-26

Applicant: ALSTOM TECHNOLOGY LTD

Inventor： Bartosz LUKASIK ,  Francisco Jose MORENO MUNOZ ,  David Reginald ,  Jonathan STURGESS ,  Colin OATES

IPC: H02M1/32 ,  H02M7/537 ,  H02H9/02 ,  H02M7/217

CPC classification number: H02M1/32 ,  H02H3/087 ,  H02H7/1206 ,  H02H9/021 ,  H02H9/023 ,  H02H9/026 ,  H02M7/217 ,  H02M7/537 ,  H02M2007/4835 ,  Y02E40/69

Abstract: A voltage source converter, for interconnecting electrical networks, comprises a converter structure which includes a terminal for connection to the first electrical network and a terminal for connection to the second electrical network. The converter structure also includes at least one module that is connected between the terminals. The module includes at least one energy storage device and at least one switching element. The energy storage element and switching element are operable to selectively provide a voltage source. The converter structure still further includes an integrated passive fault current limiter that is configured to present a first impedance to a normal current flowing in the voltage source converter during normal operation of the voltage source converter, and is configured to present a second impedance to a fault current flowing in the voltage source converter during a fault condition. The first impedance is lower than the second impedance.