公开(公告)号：EP2644436A1

公开(公告)日：2013-10-02

申请号：EP12161614.8

申请日：2012-03-27

申请人： ALSTOM Transport SA

发明人： Barlini, Davide

IPC分类号： B60L9/16

CPC分类号： B60L9/22 ,  B60L3/003 ,  B60L2200/26 ,  B60L2220/42 ,  B60L2240/527 ,  B60L2260/28 ,  Y02T10/646

摘要： An improved hard pre charge in a traction system for railway comprising at least two different motors,
each motor being controlled by means of a least one of two inverters which are connected in parallel to a common power line that supplies a DC power signal by means of a respective DC-link, an isolation switch being provided for each of said two inverters, which isolates the corresponding inverter from said power line, each inverter being further connected to the common power line by a filter capacitor bank and means for pre-charging said capacitor banks, which pre-charging means include a crow bar resistor and an automatic power switch which transfer the DC power signal to said crow bar resistor when voltage exceeds a predetermined threshold.
In order to utilize the energy dissipated by the protection resistor, the invention provides means for alternately closing the isolation switches of one of the two inverters and a connection diverting the power signal from the crow bar resistor of the inverter connected to the power signal supply line by the said automatic power switch to the filter capacitor bank of the other inverter which is isolated from the power signal supply line.

摘要翻译： 在包括至少两个不同的电动机的用于铁路的牵引系统中的改进的硬预充电，每个电动机通过两个逆变器中的至少一个来控​​制，两个逆变器并联连接到公共电力线，公共电力线通过 相应的直流链路，为所述两个逆变器中的每一个提供隔离开关，其将相应的逆变器与所述电力线隔离，每个逆变器通过滤波电容器组进一步连接到公共电力线;以及用于对所述电力线预充电的装置 电容器组，其预充电装置包括一个撬棒电阻器和一个自动电源开关，当电压超过一个预定的阈值时，它将直流电源信号传送到所述撬棒电阻器。 为了利用由保护电阻器消耗的能量，本发明提供了用于交替关闭两个逆变器中的一个的隔离开关的装置，以及将连接到电源信号供应线的逆变器的来自防盗电阻的电源信号 通过所述自动电源开关到与电源信号电源线隔离的另一个逆变器的滤波电容器组。

公开(公告)号：EP2631104A1

公开(公告)日：2013-08-28

申请号：EP12156390.2

申请日：2012-02-21

申请人： ALSTOM Transport SA

发明人： Barlini, Davide

IPC分类号： B60L9/22 ,  H02M7/48

CPC分类号： H02M7/48 ,  B60L3/08 ,  B60L9/00 ,  B60L11/02 ,  B60L2200/26 ,  B60L2270/147 ,  H02P5/74 ,  Y02T10/646 ,  Y02T10/70 ,  Y02T10/7077

摘要： A DC-link decoupling circuit is provided in combination with two inverters which are connected in parallel to a common DC power supply line and each of which inverter driving one different traction motor, switch means being provided for each of said two inverters, for separating the corresponding inverter from said power supply line in case of failure.
The said DC-link decoupling circuit is provided with resonance oscillation attenuating/damping means in the form of an RL filter (resistor-inductor filter).
The invention relates also to an electric locomotive comprising at least two electric motors, each motor being controlled by one of two inverters, each of which inverters is powered by a common power supply line, switch means being provided for each of said two inverters, for separating the corresponding inverter from said power supply line in case of failure.
DC-link decoupling means are provided for decoupling the resonance condition of inverters, which means consist of an RL filter having a damping inductor and a damping resistor in parallel.