Thermal Optimization of a High-Speed Permanent Magnet Motor

Thermal Optimization of a High-Speed Permanent Magnet Motor
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高速永磁电机的热优化

DOI:
10.1109/tmag.2013.2285017
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发表时间:
2014-02
影响因子:
2.1
通讯作者:
Yang Hui
Yang Hui
中科院分区:
工程技术4区
文献类型:
--
作者:
Dong Jianning;Huang Yunkai;Jin Long;Lin Heyun;Yang Hui

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本文研究了高速永磁电机的损耗。铁损是通过考虑集肤效应和旋转损耗的模型计算的。采用考虑端部效应的快速混合方法估计转子涡流损耗。损耗计算中考虑了电压源逆变器(VSI)带来的脉宽调制(PWM)谐波。然后利用计算的损耗结果和计算流体动力学 (CFD) 建模来评估电机的温度分布。最后,基于CFD结果,对电机结构进行优化,以实现更好的转子冷却。外部槽关闭以迫使冷却空气流过转子表面。计算出的温度分布和优化结果通过测量进行验证。
This paper investigates the losses of a high-speed permanent magnet motor. The iron losses are calculated by a model that can consider the skin effect and rotational loss. The rotor eddy current losses are estimated by a fast hybrid method that can consider the end effect. Pulse-width modulation (PWM) harmonics brought by the voltage source inverter (VSI) are considered in the loss calculations. Then the temperature distribution of the motor is evaluated by using the calculated loss results and computational fluid dynamic (CFD) modeling. Finally, based on the CFD results, the motor structure is optimized to achieve better rotor cooling. The outer slots are closed to force the cooling air flow through the rotor surface. Calculated temperature distributions and optimization results are verified by measurements.
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