Loss Calculation and Thermal Analysis for High-Speed Permanent Magnet Synchronous Machines
Loss Calculation and Thermal Analysis for High-Speed Permanent Magnet Synchronous Machines
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DOI：
10.1109/access.2020.2994754
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发表时间：
2020
期刊：
影响因子：
3.9
通讯作者：
Chao Zhang;Lixiang Chen;Xiaoyu Wang;Renyuan Tang
中科院分区：
文献类型：
--
作者：
Chao Zhang;Lixiang Chen;Xiaoyu Wang;Renyuan Tang
高速永磁同步电机的小型化使得损耗密度增大，散热困难。永磁同步电机对温度敏感，特别是永磁体，由于温度过高，永磁体很可能会发生不可逆的退磁。本文研究了非晶合金定子铁心和内置永磁转子的高速永磁同步电机的损耗和热分析。首先，分析了采用正弦和脉宽调制（PWM）逆变电源的高速永磁同步电机典型部件的磁密轨迹。基于所提出的场路耦合方法，得到了铁损特性。然后，提出了电磁-热迭代计算的方法来分析温度分布。研究了不同参数对热行为的影响，为抑制温升提供参考。最后，基于一台高速永磁同步电机样机进行了实验，验证了理论分析的正确性。
The small size of high-speed permanent magnet synchronous machines (PMSMs) makes the increase of loss density and the difficulty of heat dissipation. PMSMs are sensitive to temperature, especially the permanent magnet (PM), which is likely to suffer irreversible demagnetization due to the excessively high temperature. This paper investigates the loss and thermal analysis of high-speed PMSMs with amorphous alloy stator core and interior permanent magnet (IPM) rotor. First, the trajectory of magnetic flux density in typical parts of high-speed PMSM with sinusoidal and pulsewidth modulation (PWM) inverter power supply is analyzed. The core loss characteristics based on the proposed field-circuit coupled method is obtained. Then, an electromagnetic-thermal iteration calculation method is proposed to analyze the temperature distribution. The effect of different parameters on thermal behavior is investigated, which provide references for the suppression of temperature rise. Finally, the theoretical analysis is verified through the experiments based on a high-speed PMSM prototype.