Title: High-frequency equivalent model of AC motor for electric vehicle drive system

Authors: Yongming Yang; Hemeng Peng; Quandi Wang

Addresses: State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Room 423, University A Campus, No. 174, Shazhengjie Street, Shapingba District, Chongqing 400044, China ' State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Room 423, University A Campus, No. 174, Shazhengjie Street, Shapingba District, Chongqing 400044, China ' State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Room 423, University A Campus, No. 174, Shazhengjie Street, Shapingba District, Chongqing 400044, China

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.

Keywords: hybrid vehicles; hybrid electric vehicles; electromagnetic compatibility; AC motors; modelling; high-frequency equivalent circuits; motor drive systems; impedance measurement; electromagnetic interference.

DOI: 10.1504/IJEHV.2013.056304

International Journal of Electric and Hybrid Vehicles, 2013 Vol.5 No.2, pp.130 - 142

Received: 25 Apr 2013
Accepted: 03 Jul 2013
Published online: 09 Sep 2013 *

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