Halbach永磁阵列无刷直流电机转矩的解析计算和分析

发布时间：2018-04-26 06:36

本文选题：Halbach永磁阵列 + 无刷直流电机　；参考：《电工技术学报》2017年16期

【摘要】：Halbach永磁阵列具有灵活配置电机气隙磁通密度、磁屏蔽的特点,将其用于无刷直流电机以增加电磁转矩、降低齿槽转矩。在保角变换求解电磁场基础上,给出无刷直流电机电磁转矩与齿槽转矩的解析计算模型,通过有限元仿真对该模型的准确性进行证明;使用该模型分析每极两块(1P2p)、每极三块(1P3p)Halbach永磁阵列中主磁钢弧角和辅磁钢充磁方向角对无刷直流电机电磁转矩与齿槽转矩的影响,对比分析径向充磁、平行充磁和Halbach永磁阵列的无刷直流电机电磁转矩与齿槽转矩随永磁体厚度的变化规律。分析结果表明,合理配置无刷直流电机Halbach永磁阵列中主磁钢弧角和辅磁钢充磁方向角可提高电磁转矩、降低齿槽转矩,当永磁体厚度增加时,Halbach永磁阵列更有利于电磁转矩增加。
[Abstract]:Halbach permanent magnet array has the characteristics of flexible configuration of air gap flux density and magnetic shielding. It is used in brushless DC motor to increase electromagnetic torque and reduce slot torque. On the basis of conformal transformation to solve electromagnetic field, the analytical calculation model of electromagnetic torque and slot torque of brushless DC motor is given, and the accuracy of the model is proved by finite element simulation. The model is used to analyze the effects of the arc angle of main magnetic steel and the direction angle of magnetization of auxiliary magnetic steel on the electromagnetic torque and the grooving torque of brushless DC motor, and the radial magnetization is compared and analyzed. The variation of electromagnetic torque and grooving torque of brushless DC motor with parallel magnetization and Halbach permanent magnet array with the thickness of permanent magnet. The results show that the reasonable collocation of the main steel arc angle and the auxiliary magnetizing direction angle in the brushless DC motor Halbach permanent magnet array can increase the electromagnetic torque and reduce the tooth slot torque. When the thickness of permanent magnet increases, the Halbach permanent magnet array is more favorable for the increase of electromagnetic torque.
【作者单位】：西北工业大学自动化学院;国防科学技术大学航天科学与工程学院;
【分类号】：TM33

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