Stress Analysis of Induction Motor Core Considering Anisotropic Magnetic and Magnetostrictive Properties
Ben Tong1, Chen Long1, Yan Rongge2, Zhang Yujiao1, Yang Qingxin2
1.College of Electrical Engineering and New Energy China Three Gorges University Yichang 443002 China;
2.State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin 300130 China
Induction motor cores generate large vibration and noise because of the Maxwell electromagnetic stress between the stator and the rotor as well as the magnetostrictive stress of silicon steel. The non-oriented silicon steels in motor cores show remarkably anisotropic magnetic and magnetostrictive properties under sinusoidal and harmonic excitations. Thus, in order to compute motor stress accurately, this paper tests the anisotropic magnetic and magnetostrictive properties of silicon steel under sinusoidal and harmonic excitations. Then, an electromagneto-mechanical coupled model for motors considering anisotropic magnetic and magnetostrictive properties is proposed and stress distribution of motor cores is calculated. Finally, by comparing the model with and without considering the magnetic anisotropy, the stress distribution of anisotropy is analyzed. From the stress curve and spectrum under the harmonic excitation, it can be seen that the influence of harmonic on stress is obvious at 100 Hz and 200 Hz.
贲彤, 陈龙, 闫荣格, 张宇娇, 杨庆新. 考虑磁化及磁致伸缩特性各向异性的感应电机铁心电磁应力分析[J]. 电工技术学报, 2019, 34(1): 66-74.
Ben Tong, Chen Long, Yan Rongge, Zhang Yujiao, Yang Qingxin. Stress Analysis of Induction Motor Core Considering Anisotropic Magnetic and Magnetostrictive Properties. Transactions of China Electrotechnical Society, 2019, 34(1): 66-74.
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2019, Vol. 34 
