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FRACTIONAL SLOT WINDING CONFIGURATION FOR ELECTRIC MOTORS

United States Patent Application

20110012466
A1
View the Complete Application at the US Patent & Trademark Office
Methods and apparatus are provided for stator assembly for use with an electric motor assembly. The stator assembly includes, but is not limited to a stator core that has an inner surface and a plurality of stator slots defined in the inner surface. A fractional slot winding having a plurality of conductors is coupled to the stator core. Each stator slot contains a group of the conductors arranged in a radially adjacent configuration. The groups of conductors in each of the stator slots together form a plurality of concentric rings of conductors. The conductors in each mixed group are arranged such that conductors carrying differing phases of electric current are arranged in a radially alternating configuration.
BLISSENBACH, ROLF (ROLLING HILLS ESTATES, CA), DANG, DANG DINH (GARDEN GROVE, CA), HATCH, ERIK (CYPRESS, CA), MILANI, MICHAEL (RANCHO PALOS VERDES, CA), SCHAUER, DAVID (NEW ULM, MN), WATTLEWORTH, JOHN (MANKATO, MN)
GM GLOBAL TECHNOLOGY OPERATIONS, INC. (DETROIT MI)
12/ 503,683
July 15, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] This invention was made with Government support under Integrated Traction Drive System for HEV, PHEV, FCV (DE-FC26-07NT43123), awarded by the US-Department of Energy. The Government has certain rights in this invention.