Skip to Content
Find More Like This
Return to Search

Methods, systems and apparatus for controlling operation of an electric machine in an overmodulation region

United States Patent

8,829,827
September 9, 2014
View the Complete Patent at the US Patent & Trademark Office
Embodiments of the present disclosure relate to methods, systems and apparatus for controlling operation of an electric machine in a vector controlled motor drive system when the electric machine operates in an overmodulation region. The disclosed embodiments can reduce variations/errors in the phase voltage command signals applied to the multi-phase machine so that phase current may be properly regulated thus reducing current/torque oscillation, which can in turn improve machine efficiency and performance, as well as utilization of the DC voltage source.
Kinoshita; Michael H. (Redondo Beach, CA), Perisic; Milun (Torrance, CA), Gallegos-Lopez; Gabriel (Lomita, CA), Ransom; Ray M. (Big Bear City, CA)
GM Global Technology Operations, LLC (Detroit, MI)
13/ 339,256
20130169201
December 28, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The disclosed embodiments were made with Government support under GAF1-DPN-DE-FC26-07NT43123, awarded by the US-Department of Energy. The Government has certain rights in this application and patents issuing therefrom.