Analysis of stator current of dual-three phase induction motor drive under broken bar fault condition

Abstract

This paper deals with the analysis of the effect of broken bars fault in stator currents spectrums of a dual three phase induction motor drives. The influence of the unbalanced current between to sets resulting from the leakage inductances and phase winding resistances unbalances on the well-known characteristic frequencies of broken bars and the rotor slot harmonic (RSH) is discussed. The results show that the use of (x, y) current controllers allows not only to provide better performance of dual three phase induction motor but also to avoid error in the assess fault severity. Experimental results have been presented to validate the analytical and simulation results.