Influence of Skew and Cross-Coupling on Flux-Weakening Performance of Permanent-Magnet Brushless AC Machines
Influence of Skew and Cross-Coupling on Flux-Weakening Performance of Permanent-Magnet Brushless AC Machines
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DOI：
10.1109/tmag.2009.2013244
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发表时间：
2009-04
影响因子：
2.1
通讯作者：
G. Qi;J. Chen;Z. Q. Zhu;D. Howe;Libing Zhou;C. Gu
中科院分区：
文献类型：
--
作者：
G. Qi;J. Chen;Z. Q. Zhu;D. Howe;Libing Zhou;C. Gu
提出了一种考虑偏斜和d-q轴交叉耦合的永磁无刷交流电机弱磁性能预测方法。该方法基于d-q轴磁链模型，采用混合二维有限元（FE）解析法预测d轴和q轴电感。然而，它只需要对机器横截面上的磁场分布进行二维有限元分析。将该方法应用于单定子槽-螺距倾斜的永磁无刷交流电机的转矩-转速特性预测。这与机器直接有限元分析的预测结果进行了比较，并通过测量进行了验证。
A method is proposed for predicting the flux-weakening performance of permanent-magnet (PM) brushless ac machines accounting for skew and d-q axis cross-coupling. The method is based on a d-q-axis flux-linkage model, a hybrid 2-D finite-element (FE)-analytical method being used to predict the d- and q-axis inductances. However, it only requires 2-D FE analysis of the magnetic field distribution over a cross section of the machine. The developed method is used to predict the torque-speed characteristic of an interior PM brushless ac machine with one stator slot-pitch skew. This is compared with predictions from a direct FE analysis of the machine and validated by measurements.