Application of Sweep Frequency Response Analysis for the detection of winding faults in induction motor

The Sweep Frequency Response Analysis (SFRA) is one of the powerful graphical technique to detect and diagnosed different faults in transformer. This paper proposed novel approach for the detection of winding fault and constructional asymmetry in three phase induction motor (TPIM) using sweep frequency response analysis technique. In this paper, the sweep frequency response of three phase induction motor is analyzed during healthy and stator winding faults conditions. Due to manufacturer defects in an induction motor causes constructional asymmetry (mechanical), which is also analyzed using sweep frequency response analysis. The analysis of this technique strongly depends on expert opinion. In order to reduce dependency on the expert, this technique is further extended by estimating statistical parameters such as, Correlation Coefficient (CC), Standard Deviation (SD), Maximum Absolute Difference (DABS), Absolute Sum of Logarithmic Error (ASLE).