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首页> 外文期刊>IEEE Transactions on Magnetics >Cogging Torque and Unbalanced Magnetic Force Prediction in PM Machines With Axial-Varying Eccentricity by Superposition Method
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Cogging Torque and Unbalanced Magnetic Force Prediction in PM Machines With Axial-Varying Eccentricity by Superposition Method

机译：叠加法预测轴变偏心永磁电机的齿槽转矩和不平衡磁力

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摘要

This paper proposes a double superposition method to quickly and accurately predict the cogging torque and unbalanced magnetic force (UMF) of permanent magnet machines with axial-varying rotor eccentricities. The original axial-varying eccentric machine is cut into several uniform slices along the axial direction and each slice is considered to be axially uniform, i.e., axial even. For each axial-even eccentric machine slice, the circumferential superposition method can be used to predict the cogging torque and UMF of this slice. Finally, the cogging torque and UMF of the original axial-varying eccentric machine can be obtained by using an axial superposition technique which combines the cogging torque and UMF of each slice with different eccentricity magnitudes together. The 3-D finite-element analysis is adopted to validate the efficacy of the proposed method and the merit of high accuracy and computational efficiency is also identified by comparing the results predicted from these two methods.
机译：本文提出了一种双重叠加方法，可以快速准确地预测转子轴向偏心的永磁电机的齿槽转矩和不平衡磁力（UMF）。原始的变轴向偏心机沿轴​​向切成几个均匀的切片，每个切片被认为是轴向均匀的，即轴向均匀。对于每个轴向甚至偏心的机器切片，都可以使用周向叠加方法来预测该切片的齿槽转矩和UMF。最后，可以通过使用轴向叠加技术获得原始轴向可变偏心机的齿槽转矩和UMF，该技术将具有不同偏心度值的每个切片的齿槽转矩和UMF组合在一起。通过3-D有限元分析来验证该方法的有效性，并且通过比较这两种方法的预测结果，还可以识别出高精度和计算效率的优点。

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