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RSWPT for Induction Machine Fault Diagnosis Based on Transient Current Signal

This paper presents a novel technique to detect the Broken Rotor Bar (BRB) fault under transient operating conditions of the Induction Motor (IM). The contribution of this work lies in presenting the Recursive Wavelet Packet Transform (RSWPT) as an efficient technique for extracting the fault feature during the transient event. A comparative study of Power Spectral Density (PSD), Wavelet Packet Transform (WPT) and RSWPT techniques proved the superiority of this latter with regard to low hardware requirements and net distinction between the healthy and the faulty motor.