A permanent magnet hysteresis hybrid synchronous motor for electric vehicles

Abstract
This paper presents the design, analysis and PWM vector control of a hybrid permanent magnet hysteresis synchronous (PMHS) motor with a view to improve the performances of motors for electric vehicle applications. This hybrid design combines the advantageous performance features of both conventional hysteresis motors and permanent magnet motors. Electrical equivalent circuits of the PMHS motor are developed for both the synchronous and asynchronous modes of operation. PWM vector control simulation results for the motor drives are given. Finally, a laboratory prototype hybrid hysteresis permanent magnet motor was built. Test results validate the superior performances of the new motor.

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