SCIM diagnosis using 3-D plot CWT

Abstract EN

In this paper, a new results in induction motor diagnosis approach for identifying rotor broken bar / end-ring failures is presented, the approach is based on the analysis of the stator current in steady state, using the Windowed Fourier transform analysis and comparison between Continuous Wavelet Transform (CWT) in 2-D time-frequency plot and 3-D time frequency plot respectively Using the simplified dynamic model of the squirrel cage induction motor ; Simulation results are reported to validate the effectiveness of the wavelet transform and its ability to provide a local representation of the non stationary current signal particularly in 3-D time frequency plot and to overcome the limitation of the classical approaches based on Fourier Analysis .