公开(公告)号：US08711591B2

公开(公告)日：2014-04-29

申请号：US13643985

申请日：2010-05-11

申请人： Tomas U Jonsson ,  Anshuman Shukla ,  Staffan Norrga ,  Kalpesh Hirjibhai Bhalodi ,  Praveen Kumar Barupati ,  Subhasish Mukherjee ,  Sasitharan Subramanian

发明人： Tomas U Jonsson ,  Anshuman Shukla ,  Staffan Norrga ,  Kalpesh Hirjibhai Bhalodi ,  Praveen Kumar Barupati ,  Subhasish Mukherjee ,  Sasitharan Subramanian

IPC分类号： H02M7/04

CPC分类号： H02M7/758 ,  H02J3/36 ,  H02M7/483 ,  H02M2007/4835 ,  Y02E60/60

摘要： The present invention relates to an AC/DC converter comprising at least two phase legs connected in series between first and second DC connection terminals of the AC/DC converter, wherein each phase leg comprises: an AC connection having first and second terminals arranged to connect the phase leg to a phase of an AC system; a phase branch comprising at least one converter cell and having first and second branch end terminals; and a capacitor. The capacitor is connected the between the first branch end terminal and the first AC connection terminal, so that the capacitor forms a DC blocking capacitor. The second AC terminal is connected to the second branch end terminal. The series connection of the phase legs between first and second DC connection terminal is such that a first series connection point in a phase leg is located between the first branch end terminal and the capacitor, while a second series connection point is located between the second branch end terminal and the second AC connection. The invention further relates to a method of operating such AC/DC converter.

摘要翻译： 本发明涉及一种AC / DC转换器，其包括在AC / DC转换器的第一和第二DC连接端子之间串联连接的至少两个相位支路，其中每个相位支路包括：具有布置成连接的第一和第二端子的AC连接 相位支路到交流系统的一个相位; 包括至少一个转换器单元并具有第一和第二分支端子的相位分支; 和电容器。 电容器连接在第一分支端子端子和第一AC连接端子之间，使得电容器形成隔直流电容器。 第二AC端子连接到第二分支端子。 第一和第二直流连接端子之间的相位线的串联连接使得相位支路中的第一串联连接点位于第一分支端子端子和电容器之间，而第二串​​联连接点位于第二支路 终端和第二AC连接。 本发明还涉及一种操作这种AC / DC转换器的方法。

公开(公告)号：US08614904B2

公开(公告)日：2013-12-24

申请号：US12933357

申请日：2008-03-20

申请人： Staffan Norrga ,  Tomas U. Jonsson

发明人： Staffan Norrga ,  Tomas U. Jonsson

IPC分类号： H02M7/217 ,  H02M7/219

CPC分类号： H02M7/483 ,  B60L15/007 ,  H02M7/49 ,  H02M7/5388 ,  H02M2001/325 ,  H02M2007/4835 ,  Y02T10/645

摘要： A Voltage Source Converter having at least one phase leg connected to opposite poles of a direct voltage side of the converter and including a series connection of switching cells has an arrangement configured to apply a pressure to opposite ends of stacks of semiconductor assemblies for pressing the assemblies towards each other so as to obtain electric contact between semiconductor assemblies in the stack while ensuring that the semiconductor assemblies of a first path of each switching cell of the converter go into a permanently closed circuit state in case of a failure of the respective switching cell. A second path of each switching cell has a member configured to keep the second path including an energy storing capacitor non-conducting upon occurrence of the failure.

摘要翻译： 具有连接到转换器的直流电压侧的相对极的至少一个相位支路并包括开关单元的串联连接的电压源转换器具有被配置为对半导体组件堆叠的相对端施加压力的装置，用于按压组件 朝向彼此，以便在堆叠中的半导体组件之间获得电接触，同时确保在各个开关单元发生故障的情况下，转换器的每个开关单元的第一路径的半导体组件进入永久闭合电路状态。 每个开关单元的第二路径具有构造成在发生故障时保持第二路径包括能量存储电容器不导通的构件。

公开(公告)号：US20130016541A1

公开(公告)日：2013-01-17

申请号：US13582293

申请日：2010-03-04

申请人： Staffan Norrga ,  Tomas U Jonsson ,  Anshuman Shukla

发明人： Staffan Norrga ,  Tomas U Jonsson ,  Anshuman Shukla

IPC分类号： H02M7/02 ,  H02H7/125

CPC分类号： H02J3/36 ,  H02M7/7575 ,  H02M2007/4803 ,  H02M2007/4835 ,  Y02E60/60

摘要： The present invention relates to an AC/DC converter station for interconnection of a DC transmission line and an AC network, the AC/DC converter station including an AC/DC converter and a control system configured to control the AC/DC converter. The AC/DC converter station comprises a capacitor connected in series between the AC/DC converter and the AC network, and a voltage measurement device arranged to measure the voltage across the capacitor. The AC/DC converter further comprises a control system connected to the voltage measurement device and arranged to receive, from the voltage measurement device, a signal indicative of a measured voltage. The control system is arranged to perform the control of the AC/DC converter in dependence of the signal received from the voltage measurement device. The invention further relates to a method of operating an AC/DC converter station.

摘要翻译： 本发明涉及一种用于直流传输线和交流网络互连的AC / DC转换站，该AC / DC转换站包括AC / DC转换器和配置成控制AC / DC转换器的控制系统。 AC / DC转换站包括串联连接在AC / DC转换器和AC网络之间的电容器，以及布置成测量电容器两端的电压的电压测量装置。 AC / DC转换器还包括连接到电压测量装置并被布置成从电压测量装置接收指示测量电压的信号的控制系统。 控制系统被配置为根据从电压测量装置接收的信号执行AC / DC转换器的控制。 本发明还涉及一种操作AC / DC转换器站的方法。

公开(公告)号：US20120201059A1

公开(公告)日：2012-08-09

申请号：US13395359

申请日：2009-09-11

申请人： Bertil Berggren ,  Staffan Norrga ,  Tomas U. Jonsson

发明人： Bertil Berggren ,  Staffan Norrga ,  Tomas U. Jonsson

IPC分类号： H02H7/125

CPC分类号： H02J3/36 ,  H02H7/268 ,  H02M1/32 ,  H02M2007/4835 ,  Y02E60/60

摘要： A method, voltage source converter and computer program product for limiting the current in a DC power transmission system are disclosed. The voltage source converter has an AC side and a DC side and a fault current path between these sides. It furthermore includes a control unit and at least one switching unit of a first type provided in the fault current path and that includes a primary switching element together with an anti-parallel secondary controllable rectifying element. Based on a fault being detected in the DC power system when the primary switching elements of the converter are blocked, the control unit changes the control of the controllable rectifying element from acting as a non-controllable rectifying to acting as a controllable rectifying element.

摘要翻译： 公开了一种用于限制直流电力传输系统中的电流的方法，电压源转换器和计算机程序产品。 电压源转换器具有交流侧和直流侧以及两侧之间的故障电流路径。 此外，还包括设置在故障电流路径中的控制单元和至少一个第一类型的开关单元，并且包括主开关元件以及反并联次级可控整流元件。 基于在转换器的主开关元件被阻塞时在直流电力系统中检测到的故障，控制单元改变可控整流元件的控制作为不可控整流作为可控整流元件。

公开(公告)号：US20120086412A1

公开(公告)日：2012-04-12

申请号：US13270883

申请日：2011-10-11

申请人： Filippo Chimento ,  Frans Dijkhuizen ,  Jean-Philippe Hasler ,  Falah Hosini ,  Tomas Jonsson ,  Peter Lundberg ,  Mauro Monge ,  Staffan Norrga ,  Jan R. Svensson ,  Fredrik Tinglow

发明人： Filippo Chimento ,  Frans Dijkhuizen ,  Jean-Philippe Hasler ,  Falah Hosini ,  Tomas Jonsson ,  Peter Lundberg ,  Mauro Monge ,  Staffan Norrga ,  Jan R. Svensson ,  Fredrik Tinglow

IPC分类号： G05F1/70

CPC分类号： H02J3/1842 ,  H02M7/49 ,  H02M2007/4835 ,  Y02E40/22

摘要： Power exchanging arrangement, in shunt connection, with a three-phase electric power network including on one hand for each said phase a reactive impedance element and a Voltage Source Converter connected in series with said element, and on the other hand a control unit configured to control semiconductor devices of turn-off type of said converter for generating a voltage with a fundamental frequency being equal to the fundamental frequency of the voltage of the respective said phase and by that control a flow of reactive power between said arrangement and the respective phase of said electric power network. Each Voltage Source Converter includes a series connection of switching cells in the form of so-called H-bridges including two switching elements connected in parallel and each having at least two semiconductor assemblies connected in series. Each switching cell further comprises at least one energy storing capacitor connected in parallel with said switching elements.

摘要翻译： 在分流连接中的电力交换装置，具有三相电力网络，一方面包括每个所述相位与所述元件串联的无功阻抗元件和电压源转换器，另一方面，一种控制单元，被配置为 控制所述转换器的关断型半导体器件，用于产生基本频率等于相应的所述相的电压的基频的电压，并且通过该控制，所述装置与相应的相位之间的无功功率的流动 说电力网。 每个电压源转换器包括以所谓的H桥形式的开关单元的串联连接，包括并联连接的两个开关元件，并且每个具有至少两个串联连接的半导体组件。 每个开关单元还包括与所述开关元件并联连接的至少一个储能电容器。

公开(公告)号：US06507503B2

公开(公告)日：2003-01-14

申请号：US09922649

申请日：2001-08-07

申请人： Staffan Norrga

发明人： Staffan Norrga

IPC分类号： H02M3335

CPC分类号： H02M7/758

摘要： An apparatus for converting direct voltage into alternating voltage and conversely comprises a VSC-converter (8) having a direct voltage intermediate link (9) and at least one phase leg (12, 13). Each current valve (14-17) of the phase legs has at least one semiconductor device of turn-off type and a rectifying member connected in anti-parallel therewith. A transformer (19) has two opposite ends of a first winding (20) thereof connected to an output (21, 22) each of the VSC-converter and a second winding (23) connected to a direct converter having at least one phase leg. Each of the current valves of the direct converter being able to conduct current and block voltage in both directions and to turn on by gate control. A midpoint (27) of the phase leg of the direct converter is provided with a phase output for forming a terminal for the alternating phase voltage between this output and a further phase output (28).