High-frequency equivalent model of AC motor for electric vehicle drive system
by Yongming Yang; Hemeng Peng; Quandi Wang
International Journal of Electric and Hybrid Vehicles (IJEHV), Vol. 5, No. 2, 2013

Abstract: The application of the motor drive system in electric and hybrid-electric vehicles can lead to a significant increase in electromagnetic compatibility. The AC motor as an important part of motor drive system must be considered. In this paper, a high frequency modelling method of the AC motor is presented. The modelling method consists of deriving the motor model parameters from mathematical resolution of the electrical circuit equations and observation of the variations of the motor impedance with the frequency. All parameters of the proposed models are obtained by differential mode (DM) and common mode (CM) impedance measurement in the frequency domain. The model is verified by impedance measurement of a synchronous motor. The method proposed can be used to obtain a high-frequency equivalent circuit of an AC motor and predict conducted electromagnetic interference in a motor drive system.

Online publication date: Mon, 09-Sep-2013

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