公开(公告)号：US09335361B2

公开(公告)日：2016-05-10

申请号：US13910096

申请日：2013-06-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Silva Hiti ,  Steven E. Schulz ,  Millin Perisic ,  William R. Cawthorne ,  Mark A. Vernacchia ,  Aubrey Walter Downs, Jr. ,  Gabriel Gallegos-Lopez ,  Michael D. Haggerty

IPC: G01R31/00 ,  G01R31/02 ,  B60L3/00

CPC classification number: G01R31/005 ,  B60L3/0023 ,  B60L3/003 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/429 ,  G01R31/007 ,  G01R31/026 ,  Y02T10/642

Abstract: An electric machine electrically connects to an inverter via a multi-phase power circuit. A method for monitoring the multi-phase power circuit includes non-intrusively adjusting a commanded AC electric current from the inverter after a prescribed time period and comparing a measured magnitude of AC electric current in the multi-phase power circuit with a minimum threshold. Presence of an open circuit fault in the multi-phase power circuit can be detected based upon the comparison.

Abstract translation: 电机通过多相电力电路与逆变器电连接。 一种用于监视多相电力电路的方法包括在规定的时间段之后从逆变器非侵入式地调整指令的AC电流，并将多相电力电路中的测量的交流电流的大小与最小阈值进行比较。 可以基于比较来检测多相电源电路中的开路故障。