EVALUATION OF FAULT DETECTION TECHNIQUES USED FOR INDUCTION MOTOR WITH STATOR WINDING TURN FAULT

In this paper, a comparative study among various fault detection techniques used for induction motors with stator winding turn fault is presented. In these techniques the three-phase voltage and current waveforms at the terminal of the motor are used to extract the fault signature. This study is based on simulating the faulty motor on phase (abc) fiame. The effect of load, fault resistance, and fault location "faulty turns percentage" on the accuracy of fault detector determination are investigated. Also, the imperfections existed in motor and voltage source unbalance are studied and corrected to cancel their effects on fault signature. Applicability of each of the techniques to on-line use is examined. The results revealed the most appropriate technique among the compared fault detection techniques. +I d .Sp.dl> +L! &9i d U S Y L a 1 W l 691 L l j~ M i I& .L 3 4 4 1 &id + .MI A," 4 4 1 LA+I & d J @ 1 3 J&I p~ bb .e9% ,+i~d~zj,.~pij~&L!& ~ G ~ U ; J I L~~KJMI &+i; .ABC J&! >W~I I I 5 &&,dl @ I&L\~ .%& & &!& &i&! L\>J i;a .&yi > J d ! jl&p.d! &.hiJ*j & d l .+9yl GI & K p . d 2 pLk.yl dL%Y Lpl&l& $1 &&. dl &&I &d