A Correlation Between Eccentricity Fault and AC Winding Losses of Permanent Magnet Synchronous Motors

In this study, the variation of AC winding losses in a permanent magnet synchronous motor (PMSM) under eccentricity fault conditions is investigated. To analyze how AC winding losses change during eccentricity faults, the motor is simulated using ANSYS@Motor-CAD software under static, dynamic, and mixed (static + dynamic) eccentricity faults. Analyses are conducted with three different stator conductor types and at various operating frequencies. The obtained results are extensively analyzed and compared for both healthy and eccentric motors. The analysis results show that the AC winding losses in the faulty condition increase compared to the healthy condition.