永磁同步电机共模EMI模型的参数化研究

Research on Parameterization of Common Mode EMI Model for PMSM

提出了一种电机共模EMI模型的建模方法。通过测量电机的端口差共模阻抗,利用每种阻抗在不同串并联谐振频率处的值确定模型中的R,L,C参数,该方法在确定电机共模EMI模型的参数时,简便实用。所建模型可用于永磁交流伺服驱动系统共模EMI噪声的仿真预测。

A modeling method of the motor CM EMI model is proposed.The DM and CM imped-ance of the motor terminal through measuring is obtained.The R,L,C parameters are achieved by extracting the value of each impedence at different series resonat frequencies or parallel resonat fre-quencies.This presented method is simple and ef-fective to parameterize the CM EMI model.The modeling approach is used for predicting the CM EMI of permanent magnet AC servo drives.