公开(公告)号：US09142955B2

公开(公告)日：2015-09-22

申请号：US13665809

申请日：2012-10-31

Applicant: GM Global Technology Operations LLC

Inventor： Kon-King M. Wang ,  William T. Ivan ,  Bryan M. Ludwig ,  Kris S. Sevel

IPC: H02H9/08 ,  H02P27/06 ,  B60K6/00 ,  H02M1/32

CPC classification number: H02H9/08 ,  B60K6/00 ,  H02M1/32 ,  H02P27/06 ,  Y02T10/62

Abstract: Systems and methods for a fault protection are provided that can be implemented in a hybrid electric vehicle (HEV) to limit the magnitude of a current that flows when an AC-to-chassis fault (ACF) occurs between an AC connection and the chassis of the HEV. An electric machine having a winding, an inverter sub-module (ISM) having a first switch and a second switch, and fault protection elements (FPEs), coupled to the ISM, are provided. The winding is coupled to the ISM coupled via the AC connection. The FPEs can include, for example, first and second inductances. To limit the magnitude of the current, the current can be passed along a first current path that includes the second inductance when the first switch is closed, and can be passed along a second current path that includes the first inductance when the second switch is closed.

Abstract translation: 提供了用于故障保护的系统和方法，其可以在混合电动车辆（HEV）中实现，以限制在AC连接和底盘之间发生AC到机箱故障（ACF）时流动的电流的大小 HEV。 提供具有绕组的电机，具有第一开关和第二开关的反相器子模块（ISM）以及耦合到ISM的故障保护元件（FPE）。 绕组耦合到通过AC连接耦合的ISM。 FPE可以包括例如第一和第二电感。 为了限制电流的大小，当第一开关闭合时，电流可以沿着包括第二电感的第一电流通路传递，并且当第二开关闭合时可以沿包括第一电感的第二电流通路通过电流 。