Analysis of AC Losses in High-Speed Permanent Magnet Motors Based on the Equivalent Modeling Method
Analysis of AC Losses in High-Speed Permanent Magnet Motors Based on the Equivalent Modeling Method
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DOI：
10.1109/icelmach.2018.8506900
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发表时间：
2018-09
期刊：
影响因子：
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通讯作者：
F. Chai;Zongyang Li;Yanlei Yu
中科院分区：
文献类型：
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作者：
F. Chai;Zongyang Li;Yanlei Yu
对于高速永磁电机，平行股线中的交流损耗和邻近效应可能难以准确预测。通常情况下，在计算中使用完整的2D模型，但建模过程复杂，计算耗时。提出了一种计算高速永磁电机绕组电流密度分布和交流损耗的等效建模方法。该方法可以提供准确的结果，并节省了大量的建模和计算时间。等效模型计算的电流密度分布与完整模型计算的有限元结果吻合较好。本文研究了100 kW、30000 r/min永磁电机的邻近效应和交流损耗。该方法可以将电枢反应磁场和永磁体旋转磁场的作用分开分析。该方法可以大大提高高速电机的设计和优化效率。
For high-speed permanent magnet motors, the AC losses and proximity effect in the parallel strands can be difficult to predict accurately. Usually, the complete 2D model is used in calculation but the modeling process is complicated and the calculation is time consuming. This paper presents an equivalent modeling method to calculate the current density distribution in the windings and AC losses in the high-speed permanent magnet motors. This method can provide accurate results and save a lot of time in terms of modeling and computation. The current density distribution calculated by the equivalent model shows a good agreement with the FEA results calculated by the complete model. This paper investigates the proximity effect and AC losses in a 100kW, 30000r/min permanent magnet motor. With the proposed method, the effect of the armature reaction magnetic field and the permanent magnet rotating magnetic field can be analyzed separately. This method can greatly improve the efficiency of high-speed motor design and optimization.