公开(公告)号：US09787210B2

公开(公告)日：2017-10-10

申请号：US14596351

申请日：2015-01-14

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Yogesh P. Patel ,  Rangarajan Tallam ,  Brian P. Brown ,  Jiangang Hu ,  James J. Campbell

IPC: H02M5/44 ,  H02H9/00 ,  H02M7/12 ,  H02M1/12

CPC classification number: H02M5/44 ,  H02H9/001 ,  H02H9/002 ,  H02M7/125 ,  H02M2001/123

Abstract: Precharging systems and methods are presented for precharging a DC bus circuit in a power conversion system, in which precharging current is connected through a precharging resistance coupled between only a single AC input line and the DC bus circuit when the DC bus voltage is less than a non-zero threshold, and a controller individually activates controllable rectifier switching devices when the DC bus voltages greater than or equal to the threshold using DC gating or pulse width modulation to selectively provide a bypass path around the precharging resistance for normal load currents in the power conversion system.

公开(公告)号：US20160204709A1

公开(公告)日：2016-07-14

申请号：US14596351

申请日：2015-01-14

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Yogesh P. Patel ,  Rangarajan Tallam ,  Brian P. Brown ,  Jiangang Hu ,  James J. Campbell

IPC: H02M5/44

CPC classification number: H02M5/44 ,  H02H9/001 ,  H02H9/002 ,  H02M7/125 ,  H02M2001/123

Abstract: Precharging systems and methods are presented for precharging a DC bus circuit in a power conversion system, in which precharging current is connected through a precharging resistance coupled between only a single AC input line and the DC bus circuit when the DC bus voltage is less than a non-zero threshold, and a controller individually activates controllable rectifier switching devices when the DC bus voltages greater than or equal to the threshold using DC gating or pulse width modulation to selectively provide a bypass path around the precharging resistance for normal load currents in the power conversion system.

Abstract translation: 提出了预充电系统和方法，用于对电力转换系统中的直流总线电路进行预充电，其中当直流母线电压小于一个时，预充电电流通过仅在单个AC输入线和直流总线电路之间耦合的预充电电阻来连接 非零阈值，并且当DC总线电压大于或等于阈值时，控制器单独激活可控整流器开关器件，使用DC门控或脉冲宽度调制，以选择性地为电源中的正常负载电流提供围绕预充电电阻的旁路 转换系统