异步电动机轻载起动转子断条故障检测方法

Detection Method for Broken Rotor Bars in Induction Motors under Light Load and Start-up

结合笼型异步电机的轻载和起动特性,对笼型异步电动机转子断条故障特征进行了机理仿真与实验分析。在此基础上提出了基于短时傅里叶变换(STFT)的异步电动机转子断条故障检测方法。实例结果表明,该方法是行之有效的。

With the analysis of characteristic of cage induction machines under light load and start-up, this paper analyzed the fault features ofrotor bar breaking, and a series ofnovel detection schemes are presented. Tlaatfocuses on the early detection of the winding faults in asynchronous motors, as would help avoid catastrophic failure, reduce repair cost and outage time to a great extent.