蔡云,戴鹏,宋中仓,周书颖.基于小波包改进算法的电机转子断条故障诊断[J].电测与仪表,2012,49(8):1-4,50. CAI Yun , DAI Peng , SONG Zhong-cang , ZHOU Shu-ying.Fault Diagnosis of Motor Rotor Bar Breaking Based on the Improved Algorithm of Wavelet Packet[J].Electrical Measurement & Instrumentation,2012,49(8):1-4,50.
基于小波包改进算法的电机转子断条故障诊断
Fault Diagnosis of Motor Rotor Bar Breaking Based on the Improved Algorithm of Wavelet Packet
When rotor bar breaking of asynchronous motor occurred,frequency components(1-2s)f regarded as fault feature frequency were appeared in the stator current.However,when it is relative to the fundamental frequency f,its amplitude is small and close to the fundamental frequency easily be drowned.An improved algorithm of wavelet packet decomposition and reconstruction of single node which can highlight the fault feature frequency components(1-2s)f and avoid the influence of fundamental frequency was used in this paper.The results of simulation and experiments showed that the method can accurately diagnose rotor bar breaking fault.
