REAL-TIME DETECTION OF MOTOR FAULTS WITH THREE-PHASE SINE DRIVE MOTORS

摘要

A method of detecting a fault in a sinusoidally controlled permanent magnet synchronous motor (PMSM) (16). The method includes receiving a first rotor reference frame current demand, the first rotor reference frame current demand based on a current control for the PMSM and receiving a first rotor reference frame current feedback, the first rotor reference frame current feedback corresponding to the first rotor reference frame current demand received. The method also includes computing a first error of the rotor reference frame current based on the first rotor reference frame current demand and the first rotor reference frame current feedback and identifying a fault of the sinusoidally controlled PMSM if the first error exceeds a first selected threshold for a first selected duration.