永磁球形电动机永磁体涡流损耗分析

发布时间：2018-05-07 19:21

本文选题：永磁球形电动机 + 双重傅里叶级数法　；参考：《电工技术学报》2015年12期

【摘要】：永磁球形电动机的磁极呈球面锥体结构,各定子线圈相互独立分布于定子球壳内表面,针对这些特性,提出了一种计算永磁球形电动机永磁体涡流损耗的三维解析模型。该模型将双重傅里叶级数法与矢量磁位解析法相结合,首先利用双重傅里叶级数法求得定子内径处电流密度分布,继而将其作为边界条件,借助三维拉普拉斯方程,获得了矢量磁位的特解,最后推导得到了永磁球形电动机永磁体涡流损耗的解析表达式。该模型充分考虑到了时间谐波与空间谐波对涡流损耗的影响,并分析了不同的电机结构参数对永磁体涡流损耗的影响。将解析法与有限元法所得结果进行了比较,结果一致,证明了该解析模型的有效性。
[Abstract]:The magnetic poles of the permanent magnet spherical motor are spherical conical and the stator coils are distributed independently on the inner surface of the stator spherical shell. In view of these characteristics a three-dimensional analytical model for calculating the eddy current loss of the permanent magnet of the permanent magnet spherical motor is presented. The model combines the dual Fourier series method with the vector magnetic potential analysis method. Firstly, the current density distribution at the inner diameter of the stator is obtained by using the dual Fourier series method, and then it is regarded as the boundary condition with the aid of the three-dimensional Laplace equation. The special solution of vector magnetic potential is obtained, and the analytical expression of eddy current loss of permanent magnet for permanent magnet spherical motor is derived. The influence of time harmonics and space harmonics on eddy current loss is fully considered, and the influence of different motor structure parameters on eddy current loss of permanent magnet is analyzed. The results obtained by the analytical method and the finite element method are in agreement with each other, and the validity of the analytical model is proved.
【作者单位】：天津大学电气与自动化工程学院;
【基金】：国家自然科学基金(51007061)
【分类号】：TM351

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