公开(公告)号：EP1750363A1

公开(公告)日：2007-02-07

申请号：EP05405462.2

申请日：2005-08-03

Applicant: ABB RESEARCH LTD.

Inventor： Meysenc, Luc ,  Stefanutti, Philippe ,  Noisette, Philippe ,  Hugo, Nicolas ,  Akdag, Alper

IPC: H02M7/219

CPC classification number: H02M7/219 ,  H02M5/297 ,  H02M7/4807 ,  H02M7/49 ,  H02M2001/0074

Abstract: The present invention is concerned with a power supply system for railway traction applications including a multilevel AC/DC converter. The converter comprises a plurality of series-connected single-stage cycloconverters or direct AC frequency converters (20, 20', 20") connected between an AC supply line (11) and a traction transformer (21). The transformer is operable at a transformer nominal frequency below 3 kHz and above the AC line frequency. On the secondary side of the transformer, more than one parallel-connected secondary converter (22, 22', 22") are provided and connected to a DC link (23). In case of failure of one of the secondary converters, the multilevel AC/DC converter may continue to operate with reduced power delivered by the remaining operating levels.

Abstract translation: 本发明涉及一种包括多电平AC / DC转换器的铁路牵引应用的供电系统。 转换器包括多个串联连接的单级循环变频器或连接在AC供电线路（11）和牵引变压器（21）之间的直接AC变频器（20,20'，20“），变压器可在 变压器额定频率低于3 kHz，高于交流线路频率，在变压器的次级侧，提供多个并联连接的二次转换器（22,22'，22“）并连接到直流母线（23）。 在二次转换器之一发生故障的情况下，多电平AC / DC转换器可以继续以由剩余操作电平传送的功率降低来运行。

公开(公告)号：EP1750361A1

公开(公告)日：2007-02-07

申请号：EP05405464.8

申请日：2005-08-03

Applicant: ABB Research Ltd

Inventor： Stefanutti, Philippe ,  Hugo, Nicolas ,  Meysenc, Luc ,  Noisette, Philippe ,  Piazzesi, Alice

IPC: H02M7/217 ,  B60L9/28

CPC classification number: H02M7/483 ,  H02M7/003

Abstract: The present invention is concerned with the provision of the necessary power to the gate-drives controlling the semiconductor devices of a multilevel converter used in railway traction applications. A power loop with a power-loop emitter and a power-loop receptor located in different housings and connected via a power-loop conductor that is at least partially exterior to both housings is proposed. By means of a current transformer inductively coupling the conductor to the emitter or receptor, the power-loop also provides for electrical insulation between the emitter and the receptor. The fact that emitter and receptor are distant from each other offers greater flexibility in the positioning and design of the galvanic separation between the emitter and the receptor or the supplied gate-drive, respectively. In particular, the local voltages of converter levels ranging up to the supply voltage of e.g. 21 kV RMS of the multilevel converter can thus be insulated from the global earth potential of the power-loop emitter. Several power-loop receptors can be coupled to the same power-loop conductor and thus fed by the same power-loop emitter.

Abstract translation: 本发明涉及向控制铁路牵引应用中使用的多电平转换器的半导体器件的栅极驱动器提供必要的电力。 提出了具有功率环路发射器和功率回路接收器的功率回路，该功率回路接收器位于不同的壳体中，并且经由至少部分地外部的两个壳体的功率回路导体连接。 通过将导体感应耦合到发射极或受体的电流互感器，功率回路也提供发射极和受体之间的电绝缘。 发射极和受体彼此远离的事实分别在发射器和受体或所提供的栅极驱动之间的电隔离的定位和设计方面提供了更大的灵活性。 特别地，转换器电平的局部电压范围直到例如电源电压。 因此，多电平转换器的21 kV RMS可以与功率环路发射极的全局地电位绝缘。 几个功率环路接收器可以耦合到相同的功率环路导体，因此由相同的功率环路发射器馈电。

公开(公告)号：EP1750360A1

公开(公告)日：2007-02-07

申请号：EP05405461.4

申请日：2005-08-03

Applicant: ABB Research Ltd

Inventor： Meysenc, Luc ,  Noisette, Philippe ,  Stefanutti, Philippe ,  Biller, Peter ,  Hugo, Nicolas

IPC: H02M7/00 ,  B60L9/28 ,  H01F27/12 ,  H05K7/20

CPC classification number: H05K7/20927 ,  H01F27/12 ,  H01F27/40 ,  H02M7/483

Abstract: The present invention is concerned with the cooling of a medium voltage multilevel power electronic converter for converting a single-phase high voltage of a supply line to a lower voltage of a DC link in railway traction applications. The proposed unique cooling circuit is based on the use of the same cooling fluid to cool both the transformer and the power converters of the multilevel converter. This allows to save at least one circulation pump and one heat exchanger as compared to two separate cooling circuits for the converters and the transformer. Due to its intrinsic insulating properties, oil is used as a preferred coolant. Additionally, as the power semiconductor modules are in good thermal and likewise electrical contact with cold plates that are part of the cooling circuit, the cold plates of the different converter levels are at different electrical potential and have to be insulated against each other and against ground potential by means of insulating sections provided in the pipes guiding the coolant to the individual converter levels.

Abstract translation: 本发明涉及用于将铁路牵引应用中的供给线的单相高压转换为直流母线的较低电压的中压多电平电力电子转换器的冷却。 所提出的独特的冷却回路基于使用相同的冷却流体来冷却多电平转换器的变压器和功率转换器。 与转换器和变压器的两个独立的冷却回路相比，这样可以节省至少一个循环泵和一个热交换器。 由于其固有的绝缘特性，油被用作优选的冷却剂。 另外，由于功率半导体模块具有良好的热性，并且与作为冷却回路的一部分的冷板同样地电接触，所以不同转换器级的冷板具有不同的电势，并且必须彼此绝缘并抵抗地面 通过设置在将冷却剂引导到各个转换器级的管道中的绝缘部分的电位。