Determination of Maximum Electromagnetic Torque in PM Brushless Machines Having Two-Segment Halbach Array
Determination of Maximum Electromagnetic Torque in PM Brushless Machines Having Two-Segment Halbach Array
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DOI：
10.1109/tie.2013.2254101
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发表时间：
2014-02
影响因子：
7.7
通讯作者：
Yang Shen;G. Liu;Z. Xia;Z. Zhu
中科院分区：
文献类型：
--
作者：
Yang Shen;G. Liu;Z. Xia;Z. Zhu
本文建立了一个二维磁场分析模型，用于预测具有径向或平行磁化的两段Halbach阵列的空气和铁芯永磁（PM）无刷电机的磁场分布和相应的电磁性能。一个简单的方程推导出直接预测最大电磁转矩的最佳磁铁比，而最佳磁铁比的空气和铁芯电机的磁极对数和磁铁厚度的影响进行了研究。有限元分析和原型12槽/10极永磁无刷电机的测量验证了分析模型。
This paper develops a 2-D field analytical model for predicting the magnetic field distribution and the corresponding electromagnetic performance in air- and iron-cored permanent magnet (PM) brushless machines having radially or parallel magnetized two-segment Halbach array. A simple equation is derived to directly predict the optimal magnet ratio for maximum electromagnetic torque, while the influence of pole-pair number and magnet thickness on the optimal magnet ratio is investigated for both air- and iron-cored machines. The analytical model is validated by finite-element analyses and also measurements on a prototype 12-slot/10-pole PM brushless machine.