Method to estimate motor speed for stabilized motor control

Details Method to estimate motor speed for stabilized motor control Method to estimate motor speed for stabilized motor control

G - Physics

01

P

G01P 3/48 (2006.01) G06F 17/10 (2006.01) H02K 11/00 (2006.01)

Patent

CA 2401167

A method to estimate motor speed for extended stabilized rotational control of an induction motor at all speeds including slow speeds. The speed estimator supplies real- time motor control feedback information for a variable speed motor drive controller without a mechanical encoder. The speed estimator is based on an optimized fast orthogonal search algorithm with control of the carrier drive frequency to reduce computation time. The reduced processing time provides for an update rate to the motor controller sufficient to maintain motor stability to near zero the motor rated base speed.

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