Vibration Analysis of Axial Flux Permanent Magnet Synchronous Machines

The magnitude of motor vibration and noise is an important indicator to evaluate the performance of the motor. In this paper, taking a double-stator single-rotor axial permanent magnet motor as an example, the electromagnetic force wave order distribution of the motor is obtained by magnetic potential magnetic conductivity method, and the axial air gap magnetic density and electromagnetic force wave of the motor are analyzed by means of two-dimensional Fourier decomposition. Secondly, a joint simulation model was established, and the vibration and noise of the motor was analyzed by the finite element method and the vibration and noise tests were carried out on the prototype, which verified the correctness of the analysis. Finally, the structure of the motor was optimized, the amplitude of the electromagnetic force wave of the motor was reduced, thereby reducing the vibration noise of the motor.