摘要
针对目前每极2段式Halbach阵列分类不明确、缺少磁场性能对比分析、设计困难等问题,本文将常用的每极2段式Halbach阵列分为标准型、径向型和简化型,并对三种Halbach阵列的气隙磁场性能进行研究。以Halbach阵列内转子永磁电机为研究对象,建立三种Halbach阵列的气隙磁场解析计算模型。在解析计算的基础上,对比分析了设计参数对三种Halbach阵列永磁电机气隙磁密的影响。研究结果表明,对于确定尺寸的三种Halbach阵列,都存在最优的主磁极占比和极对数;从基波幅值和正弦畸变率的角度来评价,标准型Halbach的性能要优于其他两种类型的Halbach阵列;三种Halbach阵列的最优基波幅值都随着永磁体厚度比的增大而持续减小。
Aiming at the problems of unclear classification of 2-segment Halbach array PMs,lack of comparative analysis of magnetic field performance,and difficulty in designing,this paper divided the commonly used 2-segment Halbach arrays into standard,radial,and simplified types,the analysis and research on the magnetic field of the three types of Halbach arrays were carried out.Taking the Halbach array inner rotor permanent magnet motor as the research object,the analytical calculation model for the air-gap magnetic field of the three types of 2-segment Halbach array were established respectively.Based on the analytical calculation,the influence analysis of the design parameters on the air-gap magnetic field of three types of Halbach arrays was analyzed and compared.It is found that for the three types of Halbach arrays with certain size,there are optimal ratio of main magnetic pole and pole pairs,evaluated from the perspective of fundamental amplitude and total harmonic distortion,the performance of the standard Halbach is better than that of the other two types of Halbach arrays,the optimal fundamental amplitude of the three types of Halbach arrays continues to decrease with the increase of permanent magnet thickness ratio.
作者
李玉凯
孟军
鲁植元
吴影生
LI Yukai;MENG Jun;LU Zhiyuan;WU Yingsheng(No.38 Research Institute of China Electronics Technology Group Corporation,Hefei 230028,China;63898 Unit of the PLA,Jiyuan Henan 459000,China)
出处
《微电机》
2024年第9期47-55,共9页
Micromotors
关键词
两段式Halbach阵列
气隙磁场
解析计算模型
对比分析
2-segment Halbach array
air-gap magnetic field
analytical calculation models
comparative analysis
