At present, with the wide application of permanent magnet synchronous motor, the research on many performances of permanent magnet motor is getting deeper and deeper. In order to improve the back electromotive force waveform of permanent magnet synchronous motor and reduce the distortion rate of air gap magnetic field waveform. Parameterized design is used to optimize the shape of rotor punching shape and the width of stator slot. The motor model is established by Maxwell for simulation analysis. The analysis results show that the optimized magnetic density waveform of motor air gap is closer to sine wave, the torque ripple is reduced, and the servo performance of motor is improved.
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