Abstract
In this paper, a multi-physics simulation model capable of electromagnetic noise prediction is established, and the effectiveness of the established simulation model in predicting and evaluating electromagnetic noise is verified. Based on the verified motor model, a rotor step skewing model which can affect electromagnetic noise is proposed, and the influence of the skewing angle on electromagnetic noise is investigated in detail. By studying the spectral characteristics of the low-order radial magnetic force which has a great influence on electromagnetic noise, the distribution of electromagnetic noise characteristics of the permanent magnet synchronous motor (PMSM) with or without the rotor step skewing is compared and analyzed. Therefore, it lays a technological foundation for predicting and suppressing the electromagnetic vibration noise of electric vehicle (EV) driving motor in the electromagnetic design.
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Dong, Q., Liu, X., Qi, H. et al. Analysis and evaluation of electromagnetic vibration and noise in permanent magnet synchronous motor with rotor step skewing. Sci. China Technol. Sci. 62, 839–848 (2019). https://doi.org/10.1007/s11431-018-9458-5
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DOI: https://doi.org/10.1007/s11431-018-9458-5