Sinusoidal back-EMF of vernier Permanent Magnet machines
Sinusoidal back-EMF of vernier Permanent Magnet machines
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DOI：
10.11142/jicems.2014.3.1.40
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发表时间：
2012-10
期刊：
影响因子：
--
通讯作者：
Dawei Li;R. Qu
中科院分区：
文献类型：
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作者：
Dawei Li;R. Qu
分析了游标永磁电机的正弦反电动势波形。推导了电机电动势的解析表达式，分析了电机电动势的谐波，以及永磁电机转子极数与定子极数之比对电动势波形的影响。此外，本文提出了几个有限元分析（FEA）模型，以验证所提出的表达式的基础上的分析，和齿宽比，即齿宽与齿距的比例，对游标永磁电机的反电动势的影响，最佳齿宽比，并通过有限元分析进行了验证。最后，本文从电动势解析表达式的角度对游标永磁电机和传统永磁电机的电动势波形进行了比较。
Sinusoidal back-EMF waveform of vernier Permanent Magnet (PM) machines is analyzed in this paper. An analytical expression of Electromotive Force (EMF) of electric machines including vernier machines is developed to analyze EMF harmonics, and the effect of vernier PM machine pole ratio, the ratio of number of rotor poles to stator poles, on the EMF waveform. Moreover, this paper represents several Finite Element Analysis (FEA) models to verify the analysis based on the proposed expression, and the effect of tooth width ratio, which is the ratio of tooth width to tooth pitch, on back-EMF of vernier PM machines, and optimal tooth width ratio is obtained and verified by FEA. Finally, this paper makes comparisons between EMF waveform of vernier PM machines and that of traditional PM machines from the point of view of analytical EMF expression.