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Reducing current reversal time in electric motor control

United States Patent

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8,878,473
November 4, 2014
View the Complete Patent at the US Patent & Trademark Office
The time required to reverse current flow in an electric motor is reduced by exploiting inductive current that persists in the motor when power is temporarily removed. Energy associated with this inductive current is used to initiate reverse current flow in the motor.
13/152,067
June 2, 2011
318/400.21; 318/400.22;
H02H 7/08 (20060101);
;318/400.21,400.22,400.26,400.29
This invention was developed under Contract DE-AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.