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标题:基于田口算法的内置式永磁同步电机多目标优化设计
作者:王晓远,张力,许卫刚
2016年第5期 访问次数:226次

摘要:内置式永磁同步电机具有效率高、功率密度高、转矩密度高、弱磁调速性能好等优点,在电动汽车驱动领域应用广泛。但由于齿槽转矩和磁阻转矩的存在,相比于其他类型的永磁电机,内置式永磁同步电机的转矩脉动较大,从而影响电机运行的稳定性和使用寿命。为了提高电机的转矩特性,本文提出了基于田口算法的内置式永磁同步电机多目标优化设计。首先,合理选择电机转子关键结构参数作为优化变量。并以电机最大平均转矩、最小转矩脉动、最小齿槽转矩为优化目标,利用田口算法对电机进行优化,最终得到了优化后的转子结构参数。有限元仿真结果证明了所述优化方法的有效性。本文对车用内置式永磁同步电机的优化设计具有一定的理论意义和工程参考价值。
关键词:内置式永磁同步电机 ;田口算法 ;多目标优化设计 ;有限元方法

Abstract: Interior permanent magnet motor (IPMSM) is widely used in the electric vehicle drive, because of its high efficiency, high power density, high torque density, high fluxweakening level etc. But for the presence of the cogging torque and reluctance torque, the torque ripple of IPMSM is larger, compared to other kinds of permanent magnet motors, affecting the stability and lifetime of IPMSM. To improve the torque characteristics of IPMSM, multiobjective optimal design for the IPMSM based on the Taguchi method was proposed. First, key rotor structural parameters were selected as optimization variables reasonably. The maximum average torque, the minimum torque ripple, the minimum cogging torque were taken as optimization objectives to optimize the motor based on the Taguchi method. Finally, the optimized rotor structure parameters were obtained. The results of finite element method (FEM) simulation verify the validity of the proposed optimization method. This paper has certain theoretical significance and engineering reference value for design and optimization of IPMSM for electrical vehicles application.
Key words: interior permanent magnet motor; taguchi method; multiobjective optimal; finite element method

 
 
 
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