公开(公告)号：US20160172992A1

公开(公告)日：2016-06-16

申请号：US14571436

申请日：2014-12-16

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Rangarajan Tallam ,  Doyle F. Busse ,  Alia Rebecca Strandt

IPC: H02M5/458

CPC classification number: H02M7/062 ,  H02M1/36

Abstract: Power converters are presented having a precharging resistance and a normally closed precharging switch with a controller to limit inrush current during precharging of a DC bus circuit capacitance while preventing operation of rectifier switching devices until the DC bus voltage reaches a threshold value, and then to open the precharging switch and allow selective operation of the rectifier switching devices, with a second capacitance coupled across a rectifier output to mitigate rectifier output voltage spikes due to common mode currents flowing through a DC link choke, and additional capacitors coupled between positive and negative rectifier output terminals and ground to limit the rectifier output terminal voltages with respect to ground.

Abstract translation: 具有预充电电阻的电源转换器和具有控制器的常闭预充电开关，以在DC总线电路电容预充电期间限制浪涌电流，同时防止整流器开关器件的工作直到直流母线电压达到阈值，然后打开 预充电开关并且允许整流器开关器件的选择性操作，其中跨过整流器输出耦合的第二电容以减轻由于流过直流链路扼流圈的共模电流引起的整流器输出电压尖峰以及耦合在正整流器输出和负整流器输出之间的附加电容器 端子和接地以限制整流器输出端电压相对于地。