电动汽车轴径向混合磁通同齿极开关磁阻电机设计与分析

Design and analysis of an axial and radial hybrid flux switched reluctance motor with identical poles for electric vehicles

针对传统开关磁阻电机由于转矩脉动大、转矩密度低等缺点限制其在电动汽车驱动电机领域发展的问题,提出了一种新型电动汽车轴径向磁通分段转子开关磁阻电机结构。首先,阐述了新型电机的拓扑结构和工作原理。然后,根据功率方程给出主要设计参数。其次,选取4个结构参数,通过有限元进行正交试验矩阵分析,结合多目标影响程度的权重矩阵选取最佳的参数组合,进一步提高电机性能。最后,通过仿真实验对比和静、动态特性分析,分别验证了轴径向磁通分段转子开关磁阻电机模型的准确性和所提电机结构对于性能提升的有效性。

To address the shortcomings of traditional switched reluctance motors in electric vehicle drive applications,such as large torque pulsation and low torque density,a novel axial radial flux segmented rotor switched reluctance motor(ARFSRSRM)for electric vehicles is proposed.First,the topology and working principle of the motor are introduced,followed by the derivation of design parameters based on the power equation.Next,four structural parameters are selected for optimization using orthogonal test matrix analysis through finite element methods.The optimal parameter combination is determined by combining the weight matrix of multi-objective influence factors to further enhance motor performance.Finally,the accuracy of the ARFSRSRM model and the effectiveness of the proposed motor structure on performance enhancement are verified by comparing simulation experiment and the static and dynamic characteristics analysis,respectively.This work is supported by the National Natural Science Foundation of China(No.52007191).