Adaptive Filter and Very Narrow Band Notch Filter Rotor Broken Bars in Induction Fault Diagnosis
Xin Wang · Coal Mine Machinery · 2011
The method of RLS Algorithmic proposed is used to process noise of induction motor stator current.The extremely narrowband notch filter was used to deal subsidence with broken rotor bar signal.It can eliminate interference from power frequency component to frequency component of broken rotor bar and achieve precise identification to frequency component of broken rotor bar from FFT.Results show: the noise problem of stator current was solved by auto-adapted filter algorithm and extremely narrowband notch filter,which is good solution method can detect broken rotor bar frequency of induction motor stator current.