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新型混合励磁磁通切换型磁阻电机的非线性等效电感模型

DOI: 10.13334/j.0258-8013.pcsee.2014.36.014, PP. 6485-6492

Keywords: 混合励磁,磁通切换型磁阻电机,傅里叶级数,等效电感,非线性模型

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Abstract:

新型混合励磁磁通切换型磁阻电机(hybridexcitationfluxswitchingmotor,HEFSM)中电枢绕组、励磁绕组、永磁体三者所产生的磁场相互耦合,建立动态数学模型比较困难。为分析该电机的动态特性,该文提出一种构造三维非线性等效电感的方法,该方法是在将永磁体与励磁绕组的作用效果等效为一个整体励磁激励的基础上,利用傅里叶级数拟合单一电感曲线并利用特定转子位置的磁路确定电感非线性比例系数。最后进行了实验研究,仿真计算和实验结果的对比表明:该文所建立的电感模型能够较好地反映电机的实际特性,为该类电机的动态分析、控制策略研究等提供了参考。

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