公开(公告)号：US20140008977A1

公开(公告)日：2014-01-09

申请号：US13937802

申请日：2013-07-09

Applicant: ABB OY

Inventor： Juha KOUKKARI ,  Tuomo LEPPINEN ,  Teemu RONKAINEN

IPC: H02J4/00

CPC classification number: H02J4/00 ,  B60L1/003 ,  B60L1/20 ,  B60L11/123 ,  Y02T10/6217 ,  Y02T10/7077 ,  Y10T307/344

Abstract: An electrical system and method include a DC link, a controlled rectifier connected between the DC link and a power source, an energy storage, a DC to DC converter connected between the DC link and the energy storage, a motor, and a DC to AC converter connected between the DC link and the motor. The converters are configured to transfer power in both directions. The rectifier controls the DC voltage of the DC link when the DC link voltage is in a first voltage range. The DC to DC converter controls the DC voltage of the DC link by charging the energy storage when the DC link voltage is in a second voltage range, which has higher voltage values than the first voltage range, or by discharging the energy storage when the DC link voltage is in a third voltage range, which has lower voltages than the first voltage range.

Abstract translation: 电气系统和方法包括DC链路，连接在DC链路和电源之间的可控整流器，能量存储器，连接在DC链路和能量存储器之间的DC到DC转换器，电动机和DC到AC 转换器连接在直流母线和电机之间。 转换器配置为在两个方向上传输电力。 当直流母线电压处于第一电压范围时，整流器控制直流母线的直流电压。 当DC链路电压处于比第一电压范围更高的电压值的第二电压范围内时，直流/直流转换器通过对能量存储器进行充电来控制直流链路的直流电压，或者当直流 链路电压处于第三电压范围，其具有比第一电压范围更低的电压。