基于热固耦合的高速永磁电动机转子强度分析

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Abstract When the high-speed surface-mount permanent magnet motor is running at high speed, the rotor is subject to large impact and high temperature. In order to ensure the operating strength of the high-temperature high-speed rotor, it is necessary to check the strength of the rotor considering the temperature field. Based on the 3D temperature field, the thermal-solid coupling method is used to analyze the rotor strength of the high-speed permanent magnet motor, and the stress distribution changes under the cold state and operating temperature are compared. It is concluded that the high-speed permanent magnet motor must consider the influence of temperature rise on the rotor strength. At the same time, further considering the influence of interference, sleeve thickness, and segmentation on the thermal strength of the rotor, it is concluded that the permanent magnet motor meets the size of the rotor components under high-speed and high-temperature conditions, which provides a reliable basis for the design of this type of high-speed permanent magnet motor.

Key words： high-speed motor permanent magnet sleeve strength analysis thermo-solid coupling

Received: 28 September 2020

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	LIU Zhuang
	HAN Xueyan
	GAO jun

Cite this article:

LIU Zhuang,HAN Xueyan,GAO jun. Strength analysis of high-speed permanent magnet motor rotor based on thermo-solid coupling[J]. Electrical Engineering, 2021, 22(5): 1-5.

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http://dqjs.cesmedia.cn/EN/Y2021/V22/I5/1

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