公开(公告)号：EP1324481A3

公开(公告)日：2004-11-10

申请号：EP02079436.8

申请日：2002-10-24

申请人： Eni Technology, Inc.

发明人： Lubomirsky, Vadim

IPC分类号： H02M7/06 ,  H02M1/00

CPC分类号： H02M7/064 ,  H02M7/066 ,  H02M7/08 ,  H02M7/10 ,  H02M2001/009 ,  Y10T307/305 ,  Y10T307/582

摘要： A rectifier circuit powers three power conversion modules using a three phase AC input without a neutral connection. First, second and third bridge rectifiers are connected to first, second and third phases of the three phase AC input and produce first, second and third rectified waveforms, respectively. A connection between the first, second, and third bridge rectifiers forms a virtual neutral. Capacitors are connected across the bridge rectifies to filter the rectified waveforms and to create a DC rail voltage. The DC rail voltages feed power conversion modules. Two of the three power conversion modules remain powered at a decreased voltage level when the remaining power conversion module fails. Inductors are connected between the bridge rectifiers and the capacitors to further smooth the DC rail voltages and increase the power factor. Alternately, inductors are connected between the phases of the three phase AC input and the bridge rectifiers.

公开(公告)号：EP1324481A2

公开(公告)日：2003-07-02

申请号：EP02079436.8

申请日：2002-10-24

申请人： Eni Technology, Inc.

发明人： Lubomirsky, Vadim

IPC分类号： H02M7/06

CPC分类号： H02M7/064 ,  H02M7/066 ,  H02M7/08 ,  H02M7/10 ,  H02M2001/009 ,  Y10T307/305 ,  Y10T307/582

摘要： A rectifier circuit powers three power conversion modules using a three phase AC input without a neutral connection. First, second and third bridge rectifiers are connected to first, second and third phases of the three phase AC input and produce first, second and third rectified waveforms, respectively. A connection between the first, second, and third bridge rectifiers forms a virtual neutral. Capacitors are connected across the bridge rectifies to filter the rectified waveforms and to create a DC rail voltage. The DC rail voltages feed power conversion modules. Two of the three power conversion modules remain powered at a decreased voltage level when the remaining power conversion module fails. Inductors are connected between the bridge rectifiers and the capacitors to further smooth the DC rail voltages and increase the power factor. Alternately, inductors are connected between the phases of the three phase AC input and the bridge rectifiers.

摘要翻译： 整流电路使用三相交流输入为三个电源转换模块供电，无需中性点连接。 首先，第二和第三桥式整流器连接到三相交流输入的第一，第二和第三相，分别产生第一，第二和第三整流波形。 第一，第二和第三桥式整流器之间的连接形成虚拟中性线。 电容器连接在桥上整流，以对整流波形进行滤波，并产生直流导轨电压。 直流轨电压供电电源转换模块。 当剩余电源转换模块发生故障时，三个电源转换模块中的两个将以降低的电压电平保持供电。 电感器连接在桥式整流器和电容器之间，以进一步平滑直流电源电压并增加功率因数。 或者，电感器连接在三相AC输入和桥式整流器的相位之间。