| 发明名称 |
METHOD AND APPARATUS FOR MONITORING A MULTI-PHASE ELECTRICAL SYSTEM ON A VEHICLE |
| 摘要 |
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. |
| 申请公布号 |
US2014354292(A1) |
申请公布日期 |
2014.12.04 |
| 申请号 |
US201313910096 |
申请日期 |
2013.06.04 |
| 申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
HITI SILVA;SCHULZ STEVEN E.;PERISIC MILLIN;CAWTHORNE WILLIAM R.;VERNACCHIA MARK A.;DOWNS, Jr. AUBREY WALTER;GALLEGOS-LOPEZ GABRIEL;HAGGERTY MICHAEL D. |
| 分类号 |
G01R31/00 |
主分类号 |
G01R31/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. Method for monitoring a multi-phase power circuit between an inverter and an electric machine, comprising:
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; and detecting presence of an open circuit fault in the multi-phase power circuit based upon the comparison. |
| 地址 |
DETROIT MI US |
