公开(公告)号：US08981691B2

公开(公告)日：2015-03-17

申请号：US13855309

申请日：2013-04-02

Applicant: Denso Corporation

Inventor： Kanta Arai ,  Hideki Kabune ,  Yasuhiko Mukai

IPC: H02H7/09 ,  H02P29/02 ,  H02P25/22

CPC classification number: H02P29/022 ,  H02P25/22 ,  H02P29/0241 ,  H02P29/028 ,  H02P29/032

Abstract: When a failure detection part detects a failure in an inverter circuit in a first power supply system, a drive control part stops the inverter circuit from driving a motor. An on/off control part turns off a first power supply relay of a power supply on/off part. Under a state that the inverter circuit stops a motor driving operation, a first coil set of the motor generates an induced voltage by rotation caused by an external force. The induced voltage is regenerated to a battery from the inverter circuit through a second power supply relay and a parasitic diode of the first power supply relay. Thus, circuit elements in the power supply system, which is failing, are protected from breaking down.

Abstract translation: 当故障检测部分检测到第一电源系统中的逆变器电路中的故障时，驱动控制部分停止逆变器电路驱动电动机。 开/关控制部分关闭电源开/关部分的第一电源继电器。 在逆变器电路停止电动机驱动动作的状态下，电动机的第一线圈组由外力产生旋转感应电压。 感应电压通过第二电源继电器和第一电源继电器的寄生二极管从逆变器电路再生成电池。 因此，电源系统中的电路元件故障不受破坏。