Simulation Analysis of Electromagnetic Vibration of Rotor Compressor Motor Based on Modal Superposition Method

In order to study the electromagnetic vibration of the inverter compressor motor, a 6-pole 9-slot permanent magnet synchronous motor is taken as the research object. Firstly, the radial electromagnetic force wave generated by the air gap magnetic field of the motor under sine wave power supply is obtained by analytical method. Order and frequency distribution, and obtain the transient electromagnetic force on the stator core through electromagnetic software, simulate the modal of the motor stator assembly, obtain the low-order radial mode shape and frequency of the motor, and on this basis, we combines the electromagnetic force with the motor modal mesh to obtain the radial vibration response of the stator surface of the motor by modal superposition method, and conducts a bench test under the corresponding working conditions of the motor to measure the vibration spectrum of the motor. The results show that the simulation results are in good agreement with the test results, and the analysis process has important reference significance for predicting the electromagnetic vibration of different types of compressor motors.