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Winding Control Improvement of Drive Motor for Hybrid Electric Vehicle

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
This invention uses winding connection control and bidirectional on/off switches to supply reasonable level voltage to a motor without a booster. This invention also can raise the speed of the motor to double (or higher) of its original speed in order to free up the rooms in the slots for the additional winding. Besides lowering the battery requirement at starting, this invention can also increase the energy recovery when decelerating at low speed due to the additional turns of the motor winding-2 that produces higher voltage at low speed for charging the battery, hence higher miles per gallon.
Hsu, John S. (Oak Ridge, TN)
UT-BATTELLE, LLC (One Bethel Valley Road 4500N, MS-6258 Oak Ridge TN)
11/ 463,984
August 11, 2006
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0002] This invention was made with United States Government support under Contract No. DE-AC05-00OR22725 between the United States Department of Energy and U.T. Battelle, LLC. The United States Government has certain rights in this invention.