Dynamic Eccentricity Faut Diagnosis for Inverter-Fed Induction Motor Using Stator Current Temporal Envelope Estimation

This study presents the application of the temporal amplitude modulation signal of the stator current, extracted by a basic and reliable method for dynamic eccentricity diagnosis, of an induction machine running at varied load circumstances and fed by inverter. The suggested method is entirely dependent on detecting the stator current’s prominent peaks. The desired envelope is generated using spline interpolation and then analyzed in the frequency domain using the Fast Fourier transform (FFT). Theoretically, this strategy is given and empirically confirmed in the laboratory. Experimental outcomes achieved under different operating scenarios show the effectiveness and the robustness of the suggested approach for dynamic eccentricity fault diagnosis.