Analytical model of open-circuit characteristics of two-layer spoke-type ferrite interior permanent magnet machines
Analytical model of open-circuit characteristics of two-layer spoke-type ferrite interior permanent magnet machines
复制标题
两层轮辐式铁氧体内置永磁电机开路特性解析模型
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
P. Luk
中科院分区：
文献类型：
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作者：
B. Xia;P. Luk
基于有效而简单的磁路模型，建立了双层轮辐式铁氧体内置永磁电机的二维分析方法。由于铁氧体磁体的低剩余磁通密度，通常提出具有磁通聚焦结构的常规辐式电机来增加磁通密度。然而，轮辐式电机中含有相当多的谐波成分。因此，多层配置用于改善气隙中的磁通分布和反电动势。首先建立了轮辐式结构的解析模型，并在此基础上建立了双层结构的解析模型。为了提高模型的精度，还包括更高次谐波。然后，永磁体（PM）磁极的大小和位置的影响进行了研究。最后，通过有限元分析（FEA）仿真和实验验证了模型。
Two Dimensional (2D) analytical methods are developed based on effective yet simple magnetic circuit models for the two-layer spoke type ferrite interior permanent magnet (IPM) configured machines. Due to the low residual flux density of ferrite magnets, conventional spoke type machines with flux-focusing structure are usually proposed to increase flux density. However, the spoke type machine contains considerable amount of harmonic contents. Thus multi-layer configurations are used to improve the flux distribution in the airgap and back EMF. The analytical model for a spoke type configuration is firstly developed, and the model for the two-layer configuration is established accordingly. To improve the accuracy of the models, higher order harmonics are also included. Then, the influence of the size and location of permanent magnet (PM) poles are investigated. Finally, the models are validated by both finite element analysis (FEA) simulations and experimentations.