摘要
在异步电机中,偏心是一种常见的故障类型,轻则电机性能下降,重则定转子扫膛,电机停机。因此,以异步电机偏心故障为研究内容,提出了基于端部漏磁分析的检测方法。首先利用磁势-磁导方法求出气隙磁场;然后间接获得端部漏磁分布特性,确定用于诊断偏心的特征谐波;最后通过有限元仿真验证理论分析结果的准确性。提出的方法为偏心检测提供了一个新的选择,具有一定的实用价值。
Eccentricity was a common fault type in the asynchronous motor. It would deteriorate the performance of the motor. It even made the stator-rotor rub and the motor break down. Therefore, the research content was about the asynchronous motor＇s eccentric fault and the detection method was proposed based on the end-leakage-flux analysis. Firstly, the air-gap magnetic field was calculated by the MMF and permeance wave approach. Then the end-leakage-flux was obtained and the corresponding characteristic harmonics for detecting eccentricity were defined. Finally, the accuracy of the theoretical analysis was verified by finite element simulation. The method provided a new choice for the eccentricity detection, which had a certain practical value.
出处
《电机与控制应用》
北大核心
2016年第7期81-85,共5页
Electric machines & control application
关键词
异步电机
偏心
端部漏磁
特征谐波
asynchronous motor
eccentricity
end-leakage-flux
characteristic harmonics
