横向磁阻电机磁路设计方法比较

J. Doering, W. Hofmann
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引用次数: 1

摘要

横向磁阻电机的磁路在三个空间方向上产生磁通。三维有限元法可用于磁路设计,但计算时间较长。因此,三维有限元法并不是一种有效的优化工具。本文比较了四种更快的设计方法:简单解析法、磁等效网络、改进的二维有限元模型和简化的非常粗糙的三维有限元模型。因此,使用36种不同的电机设计(具有不同的极距,直径和齿几何形状)和2种不同的电流值(一种导致强饱和)来评估这些方法的准确性和局限性。基于统计概率分布,讨论了磁通和转矩与三维有限元分析结果(ANSYS®Maxwell®)的偏差。结果表明,等效网络和二维有限元法并不适用于所研究的所有电机设计。
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Comparison of magnetic circuit design methods of transverse flux reluctance machines
The magnetic circuit of transverse flux reluctance machines causes magnetic flux in three spatial directions. 3-D FEM can be used designing the magnetic circuit, but it requires a relatively long computation time. Therefore 3-D FEM is not useful for an optimization tool. This paper compares four much faster design methods: A simple analytical approach, a magnetic equivalent network, a modified 2-D FEM model, and a simplified and very coarse 3-D FEM. Thereby 36 different motor designs (with different pole pitch, diameter and tooth geometry) and 2 different current-values (one causes strong saturation) are used to evaluate the accuracy and limits of those methods. The deviations of magnetic flux and torque from 3-D FEM results (ANSYS® Maxwell®) are discussed based on statistical probability distributions. The results will show that the equivalent network and the 2-D FEM are not useful for all of the investigated motor designs.
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