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磁通切换型永磁电机非线性磁网络分析

, PP. 34-42

Keywords: 有限元分析,磁网络,磁通切换,永磁电机

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Abstract:

提出了一种磁通切换型永磁电机(Flux-SwitchingPermanentMagnet,FSPM)的通用非线性磁网络模型,该模型可以考虑磁场饱和的影响,能对气隙磁通密度分布、电枢线圈永磁磁通和感应电动势等电磁性能进行计算。针对一台三相定子12槽/转子10极的磁通切换永磁电机,首先建立了该电机的原始磁网络模型,并利用有限元法进行了验证。然后基于原始模型,进一步综合考虑局部饱和影响,提出了初始模型。为了进一步提高磁网络分析的精度,在初始模型基础上,又提出了两种新的磁网络模型——多段永磁支路模型和导磁桥模型,其计算结果更为精确。上述磁网络模型的分析结果均得到了二维有限元计算和实验结果的验证。通过对比可知,上述磁网络模型中导磁桥模型具有最高的分析精度。

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