摘要
将小波包变换应用于风力发电机转子故障诊断中,用Matlab小波分析将转子断条故障情况下定子侧的电流模拟信号进行多层小波分解,提取转子断条故障的故障特征,并与傅里叶分析结果对比,得到一种简易的故障诊断方法。结果表明,该方法能够准确提取故障特征,是一种优良的信号特征提取方法。
Wavelet packet transform is applied to wind turbine rotor fault diagnosis in this pa per. The analog current signal on the stator side in lhe rotor under a broken bar condition is de- composed into multiple layers using wavelet analysis to extract features of the fault. Comparing with the Fourier analysis results, a simple method of fault diagnosis is obtained. The results show that the method can accurately extract the fault characteristics, giving a good signal fealure exlrae-
出处
《上海电机学院学报》
2013年第5期272-276,共5页
Journal of Shanghai Dianji University
基金
国家青年自然科学基金项目资助(1120126)
上海市自然科学基金项目资助(12ZR1411600)
关键词
小波包
转子断条
故障诊断
wavelet packet
rotor broken bar
fault diagnosis
