Design Analysis of Six-phase Permanent Magnet Motor for Electric Vehicles

With the increasing development of electric vehicle technology, the research on the drive motor is also in-depth. Permanent magnet synchronous motor has the advantages of high power density, wide speed regulation range, high efficiency and small size, and has a broad application prospect in electric vehicles. Compared with the traditional three-phase motor, the multi-phase permanent magnet synchronous motor has the dual advantages of permanent magnet synchronous motor and multi-phase motor, which can reduce the torque fluctuation, has unique fault tolerance, and the phase deficiency can still work stably, greatly improving the reliability of the motor. According to the requirement of motor performance of electric vehicle, six-phase Y-shift 30 winding as stator winding and V-type structure as motor, and then the size design of permanent magnet is studied. At the same time, a 22kw six-phase permanent magnet synchronous motor was designed and the torque performance was analyzed with finite element software.