Abstract：In order to analyze the impact of static and dynamic eccentricity, a quasi-3D analytical model of air-gap magnetic field was firstly built for an axial-flux in-wheel motor (AFWM) without eccentricity, and the slotting effect and fringing effect was taken into account through complex relative air-gap permeance and correction function respectively. Then the analytical model under eccentric condition was gained by means of considering the variation of air gap length, and finite element (FE) analysis results indicate that the model can predict air gap flux density precisely at arbitrary position of the AFWM with both static and dynamic eccentricity. Finally, the effects of eccentricity on magnetic field and electromagnetic force were analyzed via the established model and the method to calculate bending moment was proposed. The results reveal that apart from unbalanced magnetic pull, eccentricity in AFWM will produce extra bending moment, which is quite different from radial-flux motor. The bending moment may cause eccentric degree further deterioration.
邓文哲, 左曙光, 林福, 吴双龙, 毛钰. 偏心条件下轴向磁通轮毂电机不平衡弯矩建模与分析[J]. 电工技术学报, 2017, 32(13): 153-161.
Deng Wenzhe, Zuo Shuguang, Lin Fu, Wu Shuanglong, Mao Yu. Modeling and Analysis of Unbalanced Moment for an Axial-Flux in-Wheel Motor with Eccentricity. Transactions of China Electrotechnical Society, 2017, 32(13): 153-161.
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2017, Vol. 32 
