变负载工况下高速永磁电机转子动力学特性试验研究

郝龙, 杨金福, 唐长亮,韩东江,雷欢

振动与冲击 ›› 2018, Vol. 37 ›› Issue (15) : 1-5.

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (15) : 1-5.
论文

变负载工况下高速永磁电机转子动力学特性试验研究

  • 郝龙, 杨金福, 唐长亮,韩东江,雷欢
作者信息 +

Tests for dynamic characteristics of a high speed permanent magnet motor’s rotor under different loads

  • HAO Long,YANG Jinfu,TANG Changliang,HAN Dongjiang,LEI Huan
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文章历史 +

摘要

设计搭建了由动静压混合气体轴承支承的45kW高速永磁电机转子试验平台,基于该试验平台开展了接入不同额定负载工况下,轴系受到变不平衡磁拉力的动力学特性试验。共进行五次试验,供气压力均为0.80Mpa,接入额定负载分别为0kW,15kW,30kW,60kW,145kW。接入额定负载增大,相同转速下轴系受到不平衡磁拉力增大,低频涡动出现转速提前,接入额定负载为60kW,145kW时,转子单一低频涡动频率发展为双低频振动特性,并出现碰摩降速现象。试验结果表明增加电机额定负载,轴系受到不平衡磁拉力增加,造成低频涡动出现转速降低,稳定阈值降低,且在大额定负载下,单一涡动频率发展为双低频振动频率,出现轴系的碰摩失稳故障特性。

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.

关键词

高速永磁电机 / 变负载 / 不平衡磁拉力 / 低频涡动 / 双低频

Key words

 high speed permanent magnet motor / varying rated load / unbalanced magnet pull / low frequency whirl / double-low frequency

引用本文

导出引用
郝龙, 杨金福, 唐长亮,韩东江,雷欢. 变负载工况下高速永磁电机转子动力学特性试验研究[J]. 振动与冲击, 2018, 37(15): 1-5
HAO Long,YANG Jinfu,TANG Changliang,HAN Dongjiang,LEI Huan. 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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