关键词: 电磁振动, 电磁力, 模态分析, 多目标优化

Abstract: To decrease electromagnetic vibration of vehicle permanent magnet synchronous motor under full-speed operating condition. Research on analysis and suppression exploration of electromagnetic vibration in vehicle permanent magnet synchronous motor. Aiming at the designed 6-pole-54-slot interior V-type vehicle motor. By using the equivalent radiated power level waterfall chart, calculate the significant electromagnetic vibration points under full-speed operating condition. Surround the spatiotemporal characteristics of electromagnetic force and stator model analysis to analyze the
causes of such electromagnetic vibrations. Under the full-speed operating condition,take the peak torque difference T_pk-pk,the average sound power W_avg and the average output torque T_avg as the dependent variable. Select the rotor-related dimensions that highly sensitive to the dependent variable and establish a response surface surrogate model for the dependent variable. Based on the non-dominated sorting genetic algorithm to perform multi-objective optimization on the response surface surrogate model. By conducting comparison and analysis of dependent variable before and after optimization verifies the rationality of optimization plan.

Key words: electromagnetic vibration, electromagnetic force, model analysis, multi-objective optimization