外永磁转子爪极电机磁路模型的建立与参数计算

外永磁转子爪极电机是近年来出现的一种新型结构电机,在节能调速和汽车电气系统中具有很好的应用前景。本文在对该种电机的结构特点以及运行机理进行综合分析的基础上,详细分析了电机复杂的主磁通及漏磁通情况,并建立了其简化的等效磁路模型。之后根据电机的结构特点推导出了磁路模型中磁阻和电机电抗参数的解析计算公式,并通过磁路模型得到了该种电机的反电动势计算式。为了验证磁路模型的正确性,本文研制的实验样机的实验结果与磁路模型计算值的一致性表明了理论工作的正确性和可行性。该研究工作为该种新型结构电机的深入研究打下了技术基础。

Magnetic Circuit Model and Parameter Calculation of a Claw Pole Machine with Outer PM Rotor

Claw pole machine with outer PM rotor(PMCPM) is a new structural machine occurring in the recent few years with good application perspective in energy-saving,speed-regulating and electrical system of auto.On the basis of analyzing structure,characteristics and operating mechanism,complex main magnetic flux and leakage magnetic flux of PMCPM are analyzed in detail.Simplified equivalent magnetic circuit model is built,and then formula of reluctances of this model and reactance parameters of electric machine are deduced according to structural chrematistics of PMCPM,and formula of back electromotive force of machine is derived by means of this model.In order to verify the equivalent magnetic circuit model,the prototype of PMCPM is designed and manufactured,Correctness and feasibility of theory work are verified through the comparison of experiment result and calculation values,and foundation is laid on further research on this kind of novel structural machine.