The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2016
Filed:
Jun. 04, 2013
GM Global Technology Operations Llc, Detroit, MI (US);
Silva Hiti, Redondo Beach, CA (US);
Steven E. Schulz, Torrance, CA (US);
Millin Perisic, Cypress, CA (US);
William R. Cawthorne, Milford, MI (US);
Mark A. Vernacchia, Northville, MI (US);
Aubrey Walter Downs, Jr., Brighton, MI (US);
Gabriel Gallegos-Lopez, Lomita, CA (US);
Michael D. Haggerty, Sterling Heights, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
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.