Dynamic model of interior permanent magnet motor with skewed stator slots

Realistic predictions of the dynamic and steady state performances are important in motor drive system design. This paper discusses a dynamic modeling method applied to the interior permanent magnet (IPM) motor with skewed stator slots by integrating two-dimensional electromagnetic field solutions with the electric circuit model. A multi-segment technique was applied to model the skew effect. Phenomena such as saturation and rotor saliency are taken into considerations in the suggested modeling method. The IPM motor performance characteristics under various operating conditions are investigated. Particular attention is paid to the motor torque, speed and induced back EMF responses. Experimental and simulation results of the motor model are presented.