变负载工况下高速永磁电机转子动力学特性试验研究

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Abstract A test platform for a 45kW high speed permanent magnet motor’s rotor was established，and the rotor was supported with hybrid gas bearings. Dynamic characteristics of the shaft system under different loads were tested for 5 times based on this test platform. Bearing gas supply pressures were 0.8Mpa, and the motor rated load were 0kW, 15kW, 30kW, 60kW and 145kW for test 1~test 5. It was shown that the unbalanced magnetic pull increases with increase in rated load under the same rotating speed; the rotating speed for low frequency whirl occurrence decreases from 607.42Hz to 500 HZ when the rated load increases from 0kW to 145kW; when the rated loads are 60kW and 145kW, the rotor’s single low frequency whirl feature changes into the double-low frequency feature, and the rotating speed for rubbing occurrence decreases.

Key words： high speed permanent magnet motor varying rated load unbalanced magnet pull low frequency whirl double-low frequency

Received: 13 January 2017 Published: 28 July 2018

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	Articles by authors
	HAO Long
	YANG Jinfu
	TANG Changliang
	HAN Dongjiang
	LEI Huan

Cite this article:

HAO Long,YANG Jinfu,TANG Changliang, et al. Tests for dynamic characteristics of a high speed permanent magnet motor’s rotor under different loads[J]. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(15): 1-5.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2018/V37/I15/1

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