Analysis of inter-turn short circuit fault in 2.5HP 3-phase induction motor

Abstract

The inter-turn stator fault of 3-phase induction motor has been studied in this paper. The fault has been induced in the hardware setup of the motor. The parameters of the motor in question have been calculated with the help of blocked rotor and no-load tests. The stator current signature of each phase has been recorded and then analyzed using Fast Fourier Transform and Discrete Wavelet Transform. The results obtained can be used to detect the fault in real time. Phasor diagrams for the healthy signals and fault induced signals have also been constructed and studied in this paper to analyze the variation in phase angles and magnitudes.