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:
Dec. 16, 2014
Filed:
Feb. 01, 2013
GM Global Technology Operations Llc, Detroit, MI (US);
Konstantin S. Majarov, Torrance, CA (US);
David Tang, Rancho Cucamonga, CA (US);
Reynaldo Arturo Suazo Zepeda, Redondo Beach, CA (US);
Nitinkumar R. Patel, Cypress, CA (US);
Daniel L. Kowalewski, Redondo Beach, CA (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for monitoring an inverter module for a multi-phase electric motor/generator includes deactivating operation of the inverter module, monitoring voltage on a high-voltage bus configured to supply electric power to the inverter module, detecting occurrence of a true fault when a change in the voltage on the high-voltage bus is greater than a predetermined threshold, and detecting occurrence of a false fault when the change in the voltage on the high-voltage bus is less than the predetermined threshold.