Title: Study on electromagnetic vibration of in-wheel motor for electric vehicle

Authors: Qiping Chen; Jiachao Xie; Qiang Xiao; Liming Lu; Ning Wang; Liang Wang

Addresses: Key Laboratory of Conveyance and Equipment Ministry of Education, East China Jiaotong University, Nanchang 330013, China ' Key Laboratory of Conveyance and Equipment Ministry of Education, East China Jiaotong University, Nanchang 330013, China ' Key Laboratory of Conveyance and Equipment Ministry of Education, East China Jiaotong University, Nanchang 330013, China ' Key Laboratory of Conveyance and Equipment Ministry of Education, East China Jiaotong University, Nanchang 330013, China ' Key Laboratory of Conveyance and Equipment Ministry of Education, East China Jiaotong University, Nanchang 330013, China ' Key Laboratory of Conveyance and Equipment Ministry of Education, East China Jiaotong University, Nanchang 330013, China

Abstract: In order to solve the electromagnetic vibration problem of in-wheel motors for electric vehicles, a numerical analysis method is presented for analysing the modal of in-wheel motor. The finite element models of inner stator core, inner stator core with winding and outer rotor are established respectively. The analysis results show that the higher the order of modal vibration shape, the higher the natural frequency. The critical speed of the outer rotor is analysed and studied, which shows that the outer rotor will not cause greater vibration to the in-wheel motor when it works. The harmonic response of in-wheel motor is analysed and the displacement-frequency curves of inner stator and outer rotor are obtained respectively. The analysis results show that the in-wheel motor is not in the frequency range of electromagnetic force wave. When the frequency is higher, the deformation displacement amplitude will reach the maximum.

Keywords: electric vehicle; in-wheel motor; electromagnetic vibration; numerical analysis; modal analysis; modal vibration shape; natural frequency; harmonic response.

DOI: 10.1504/IJVNV.2019.107916

International Journal of Vehicle Noise and Vibration, 2019 Vol.15 No.4, pp.205 - 219

Received: 28 Oct 2019
Accepted: 20 Jan 2020
Published online: 30 Jun 2020 *

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