Optimization of Pole and Slot Widths for Reluctance Torque Reduction in a Brushless DC Spindle Motor

T. Y. Chuang, D. Lieu, J. McAllister
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引用次数: 3

Abstract

A parametric study was conducted to determine the effect of motor stator slot widths and rotor permanent magnet pole separation widths on the reluctance torque. This study is based on a finite element analysis of a particular 6-pole/9-slot motor. The analysis can be expanded to other slot/pole combinations. Force and torque calculations were based on an integration of the Maxwell stresses along the center of the airgap. As a general rule, the reluctance torque may be reduced by decreasing the slot width for any given pole separation. For any given slot width, the reluctance torque can be reduced to zero by selection of the proper pole separation. The optimum slot widths are slightly different than those predicted by past analytical formulation. There will be, however, a noticeable effect on the main drive torque and the torque ripple.
无刷直流主轴电机磁阻减矩的极槽宽度优化
通过参数化研究,确定了电机定子槽宽度和转子永磁极分离宽度对磁阻转矩的影响。本研究是基于一个特定的6极/9槽电机的有限元分析。该分析可以扩展到其他槽/极组合。力和扭矩的计算是基于沿气隙中心的麦克斯韦应力的积分。一般来说,对于任何给定的极距,通过减小槽宽可以减小磁阻转矩。对于任何给定的槽宽,通过选择适当的极间距,磁阻转矩可以减小到零。最佳槽宽与以往分析公式预测的槽宽略有不同。然而,主驱动转矩和转矩脉动会有明显的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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