The multi-physical field coupling problem of electromagnetic vibration and noise of permanent magnet synchronous motors was studied.Based on magnetic solid coupling,and considering the influence of temperature field on the structure and electromagnetic characteristics of the motor,the finite element model of the motor of magnetic-solid-heat multi-physical field coupling was established.The structural deformation of the motor under the combined action of thermal stress and electromagnetic force was analyzed,and the electromagnetic force and vibration and noise under the strong coupling deformation and weak coupling deformation were highlighted and compared.With a 6-pole,36-slot built-in permanent magnet synchronous motor as the research object,its finite element model was established by comprehensively considering the coupling effects of multi-physical fields such as magnetic field,temperature field and structure.Various losses of the motor were accurately calculated by means of ANSYS Workbench code and temperature feedback was carried out.The accuracy of the model was verified by experiments.The results show that considering the temperature distribution and structural deformation is helpful to accurately predict and evaluate the vibration and noise level of the motor.
关键词
振动与波/永磁同步电机/有限元法/磁固热耦合/温度分布/电磁振动噪声
Key words
vibration and wave/permanent magnet synchronous motor/finite element method/magnetic-solid-thermal coupling/temperature distribution/electromagnetic vibration noise
维普
万方数据