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System and method for motor speed estimation of an electric motor

United States Patent

June 19, 2012
View the Complete Patent at the US Patent & Trademark Office
A system and method for a motor management system includes a computer readable storage medium and a processing unit. The processing unit configured to determine a voltage value of a voltage input to an alternating current (AC) motor, determine a frequency value of at least one of a voltage input and a current input to the AC motor, determine a load value from the AC motor, and access a set of motor nameplate data, where the set of motor nameplate data includes a rated power, a rated speed, a rated frequency, and a rated voltage of the AC motor. The processing unit is also configured to estimate a motor speed based on the voltage value, the frequency value, the load value, and the set of nameplate data and also store the motor speed on the computer readable storage medium.
Lu; Bin (Kenosha, WI), Yan; Ting (Brookfield, WI), Luebke; Charles John (Sussex, WI), Sharma; Santosh Kumar (Viman Nagar, IN)
Eaton Corporation (Cleveland, OH)
12/ 547,723
August 26, 2009
GOVERNMENT LICENSE RIGHTS The U.S. 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 for by the terms of Contract No. DE-FC36-04GO14000, awarded by the United States Department of Energy.