Double-Faults of Induction Motor Diagnosis Based on IPD via Wavelet Packet Analysis
Xu An Wang · Small & Special Electrical Machines · 2012
For many deficiencies that exist in induction motor rotor bar broken faults and stator winding faults diagnosis,a method based on instantaneous power decomposition via wavelet packet was introduced.By analyzing the instantaneous power decomposition and characteristic of the faults frequency,the double faults model was built.The node characteristic of faults frequency was extracted using wavelet packet,and the faults were diagnosed using the node rate.Simulations show that the instantaneous power decomposition includes rich information about the double faults,and the wavelet packet analysis can easily extract the characteristic of the faults.The RMS rate can be used to diagnose the double faults.This method is effective,and easily to be used in engineering.