轮毂多盘式无铁心永磁同步电机永磁体结构优化
刘福贵，王彦刚，陈玉民，杨乾坤
（河北工业大学 电磁场与电器可靠性省部共建重点实验室，天津 300130）
摘 要：将不等厚排列技术与90°Halbach 阵列以及不等宽排列技术相结合应用到两个外转子磁钢分析，中间盘采用普通磁钢排列，通过改变磁钢排列的厚度及宽度，来进一步提高多盘式无铁心永磁同步电机气隙磁密的基波幅值和波形的正弦性，从而提高电机性能。对16 极盘式永磁同步电机进行仿真建模，将“不等宽排列技术+ 90°Halbach 阵列”模型以及其优化模型“不等厚排列技术+ 90°Halbach 阵列+ 不等宽排列技术”进行静态气隙磁场对比分析。仿真数据表明，“不等厚排列技术+ 90°Halbach 阵列+ 不等宽排列技术”使得周向磁密波形和切向磁密波形都大为改善，磁场波形更接近于正弦分布特征，其中周向磁密波形畸变率改善了67.02%，气隙周向磁密幅值提高了8.15%。
关键词：轮毂多盘式无铁心永磁同步电机；永磁体排列结构；有限元仿真；气隙磁密；不等厚排列；90°Halbach 阵列；不等宽排列
中图分类号：TM341 文献标识码：A 文章编号：1007-3175(2016)10-0025-06
Permanent Magnet Structure Optimization in Coreless
Permanent Magnet Synchronous Motor with
Wheel Hub Multiple-Disc
LIU Fu-gui, WANG Yan-gang, CHEN Yu-min, YANG Qian-kun
（Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical
Apparatus Reliability, Hebei University of Technology,Tianjin 300130, China）
Abstract: Analysis was made to the application of the combination of different thickness array technology, 90°Halbach array and different breadth array technology in two outer rotor magnetic steel. The telophragma adopted the common magnetic steel array, whose thickness and breadth were changed to further improve the fundamental current amplitude and wavelike sine performance of coreless permanent magnet synchronous motor with wheel hub multiple-disc, so that the performance of the motor was improved. The sixteen poles disc permanent magnet synchronous motor was carried out simulation and modeling and this paper analyzed the model of different breadth array technology with 90° Halbach array and its optimization model, the different thickness array technology with 90° Halbach array and different breadth array technology was carried out static state air-gap field contrastive analysis. The simulation data show that the optimization model makes the axial and tangential magnetic flux density waveform improved, the magnetic field waveforms are more close to the sine distribution characteristics, where the circumferential flux density waveform distortion rate is improved by 67.02% and the tangential air-gap flux density amplitude value is increased by 8.15%.
Key words: coreless permanent magnet synchronous motor with wheel hub multiple-disc; permanent magnet array structure; finite element; gas flux density; different thickness array; 90 degree Halbach array; different breadth array
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