检测转子断条时定子电流故障特征分量的新方法  

A Novel Detection Method for the Current of Broken Bars Fault

作　　者：刘蕾蕾[1] 张春喜[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150040

出　　处：《石河子大学学报（自然科学版）》2006年第5期624-626,共3页Journal of Shihezi University(Natural Science)

摘　　要：本文探讨了一种笼型异步电动机转子断条故障在线检测方法,指出如何精确检测出电机转子断条故障信号是一个重要的问题。针对这一问题,提出了一种小波包分析结合FFT的处理方法。该方法弥补了单独使用FFT无时间分辨力和无法准确识别微弱故障特征信号的缺点。分析结果表明,该方法能够精确检测到电机转子断条故障信号,是切实可行的。This paper briefly introduces the ways to detect rotor bar breaking fault on-line, and points out that how to detect exactly the broken bars fault signal is still the essential problem up to now. In allusion to the problem, this paper presents a new method based on wavelet packets and FFT. Using this method can make up the weakness that using FFT has no resolution in time area and can not identify the weak fault signal, it is proved that using this method can accurately detect the broken bars fault signal of asynchronous motor.

关 键 词：转子断条 故障信号 小波包分析 FFT 

分 类 号：TM307[电气工程—电机]