Analytical Model of Eddy Current Loss in Windings of Permanent-Magnet Machines Accounting for Load
Analytical Model of Eddy Current Loss in Windings of Permanent-Magnet Machines Accounting for Load
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DOI：
10.1109/tmag.2012.2187791
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发表时间：
2012-02
影响因子：
2.1
通讯作者：
L. Wu;Z. Zhu;D. Staton;Mircea Popescu;D. Hawkins
中科院分区：
文献类型：
--
作者：
L. Wu;Z. Zhu;D. Staton;Mircea Popescu;D. Hawkins
本文提出了一个分析模型，预测开路，电枢反应和有载电阻限制的涡流损耗的表面安装的永磁电机的导体，基于子域场模型占齿尖。该分析模型可应用于具有单层、两径向层或两周向层绕组的电机。在交流铜损的计算中准确地考虑了空间谐波之间的相互作用。研究表明，在分析模型中忽略相互作用的预测总的交流铜损耗的影响可以忽略不计，但在导体之间的损耗分布的预测结果显着误差。齿尖尺寸的影响，导体分割，和电流上的交流铜损的分析模型也进行了研究。有限元分析验证了所建立的分析模型的有效性。
This paper presents an analytical model for predicting open-circuit, armature reaction and on-load resistance limited eddy current losses in the conductors of surface-mounted permanent-magnet machines, based on the subdomain field model accounting for tooth-tips. The analytical model can be applied to machines having single-layer, two-radial-layer, or two-circumferential-layer windings. The interaction between spatial harmonics is accurately accounted for in the calculation of the AC copper loss. The investigation shows that neglecting the interaction in the analytical model has negligible influence on the prediction of total AC copper loss but results in significant error in the predicted loss distribution among conductors. The influence of tooth-tip dimension, conductor segmentation, and current on the AC copper loss is also investigated by the analytical model. The finite element analysis has verified the validity of the developed analytical model.