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Electrical system using phase-shifted carrier signals and related operating methods

United States Patent

8,269,434
September 18, 2012
View the Complete Patent at the US Patent & Trademark Office
An automotive drive system and methods for making the same are provided. The system includes a three-phase motor and an inverter module. The three-phase motor includes a first set of windings each having a first magnetic polarity; and a second set of windings each having a second magnetic polarity that is opposite the first magnetic polarity. The first set of windings being electrically isolated from the second set of windings. The inverter module includes a first set of phase legs and a second set of phase legs. Each one of the first set of phase legs is coupled to a corresponding phase of the first set of windings, and each one of the second set of phase legs is coupled to a corresponding phase of the second set of windings.
Welchko; Brian A. (Torrance, CA), Campbell; Jeremy B. (Torrance, CA)
GM Global Technology Operations LLC (Detroit, MI)
12/ 473,933
May 28, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The United States government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided by the terms of contract number DE-FC26-07NT43123 awarded by the United States Department of Energy.