基于Ansoft泵用无刷直流电动机定子冲片的优化设计

Optimum design of brushless DC motor stator punching plate for pump based on Ansoft

为了获得结构更紧凑、体积更小的泵用永磁无刷直流电动机,对其定子冲片进行对称切边优化设计,提出了泵用永磁无刷直流电动机定子切边结构。利用Ansoft软件对不同切边半径的电动机进行有限元分析,分析结果表明,优化后的电动机定子体积减少、材料利用率提高、永磁体利用率略提高。最佳的切边方案不仅能削弱齿槽转矩,而且优化后的电动机空载反电势波形更理想。研究结果为泵用永磁无刷直流电动机定子冲片的优化设计提供了参考。

In order to obtain a more compact and smaller brushless permanent-magnet DC motor(BLDCM)for pumps,the symmetrical trimming optimization design of the stator punching plate is carried out,and the stator trimming structure of BLDCM for pump is presented.The finite element analysis of the motor with different cutting radius is made by using Ansoft software.The analysis results show that the stator volume of the optimized motor decreases,the material utilization rate increases,and the permanent magnet utilization rate increases slightly.The best trimming scheme can not only weaken the cogging torque,but also the optimized no-load back EMF waveform of the motor is more ideal.The research results provide a reference for the optimization design of BLDCM stator punch plate for pumps.