公开(公告)号：US06337802B1

公开(公告)日：2002-01-08

申请号：US09807992

申请日：2001-06-20

申请人： Tomas Larsson ,  Bjorn Thorvaldsson ,  Bo Akesson

发明人： Tomas Larsson ,  Bjorn Thorvaldsson ,  Bo Akesson

IPC分类号： H02H7125

CPC分类号： H02M7/1552 ,  Y10S323/908

摘要： A voltage-source converter is connected on its ac-voltage side to a three-phase electric power network via a transformer and on its dc-voltage side to capacitor equipment. The transformer has on its secondary side a first, a second, and a third phase winding, each one with a first and a second winding terminal. Resistor equipment is arranged at the transformer for limiting the current through the converter when connecting the transformer to the power network. The resistor equipment includes a first resistor, connected to the first winding terminal of the second phase winding, and switching equipment is adapted, in an initial position, to block current through the phase windings, in a transition position to form a current path which includes at least the first and the second phase windings and, in series therewith, the first resistor, which current path, when the converter is connected to the transformer, closes through the converter and the capacitor equipment, and, in an operating position, to interconnect all the first winding terminals for forming the common neutral point.

摘要翻译： 电压源转换器通过变压器和其直流电压侧连接到电容器设备，其交流电压侧连接到三相电力网络。 变压器在其二次侧具有第一，第二和第三相绕组，每个绕组具有第一和第二绕组端子。 电抗器设备设置在变压器上，用于在将变压器连接到电力网络时限制通过变流器的电流。 电阻器设备包括连接到第二相绕组的第一绕组端的第一电阻器，并且开关设备在初始位置适于在转变位置中阻断通过相绕组的电流，以形成电流路径，其包括 至少第一和第二相绕组和与其串联的第一电阻器，当转换器连接到变压器时，该电流路径通过转换器和电容器设备闭合，并且在操作位置中互连 所有用于形成共同中性点的第一个绕组端子。

公开(公告)号：US20140362619A1

公开(公告)日：2014-12-11

申请号：US14466690

申请日：2014-08-22

申请人： Mats Berglund ,  Bo Akesson

发明人： Mats Berglund ,  Bo Akesson

IPC分类号： H02M5/44

CPC分类号： H02M5/44 ,  H01F30/12 ,  H01F2038/006 ,  H02M5/4505 ,  H02M5/4585 ,  H02M7/003

摘要： An AC-AC converter system includes transformer arrangements and HVDC converter units on primary and secondary sides of the system, respectively. The system exhibits first and second three-phase AC networks, and the converter units are interconnected via a DC connection. By integrating at least part of two transformer arrangements in one transformer unit, a cost efficient transformer configuration can be achieved.

摘要翻译： AC-AC转换器系统分别包括系统的一次侧和二次侧的变压器布置和HVDC转换器单元。 该系统展示了第一和第二三相AC网络，并且转换器单元通过DC连接互连。 通过将两个变压器布置的至少一部分集成在一个变压器单元中，可以实现成本效益的变压器配置。