In order to optimize and analyze the cogging torque of hybrid stator motor, a hybrid stator motor is taken as the research project. The axial distribution of air gap magnetic flux density was analyzed, and the analytical formula of the cogging torque of the hybrid stator motor was derived. Combinedwith the cogging torque analytical formula, the superposition calculation method of cogging torque of hybrid stator motor was proposed, and the correctness of the superposition calculation method was verified by simulation analysis. The silicon steel segment and the amorphous alloy segment of hybrid stator core were optimized by using the uneven air gap structure, and the optimized results of the silicon steel segment and the amorphous alloy segment were obtained by two-dimensional simulation. Based on the results of two-dimensional simulation analysis, a three-dimensional model was built for simulation analysis. After optimization, the cogging torque of the motor was weakened by 48.1% and the torque ripple was reduced by 1.32%, while the loss and output torque remained basically unchanged.

中文翻译：

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混合定子永磁电动机齿槽转矩优化与分析

为了优化和分析混合定子电动机的齿槽转矩，以混合定子电动机为研究项目。分析了气隙磁通密度的轴向分布，推导了混合式定子电动机齿槽转矩的解析公式。结合齿槽转矩解析公式，提出了混合定子电动机齿槽转矩的叠加计算方法，并通过仿真分析验证了该计算方法的正确性。利用不均匀气隙结构优化了混合定子铁芯的硅钢段和非晶合金段，并通过二维仿真获得了硅钢段和非晶合金段的优化结果。根据二维仿真分析的结果，建立了三维模型进行仿真分析。经过优化，电机的齿槽转矩减小了48.1％，转矩脉动减小了1.32％，而损耗和输出转矩则基本保持不变。