Stator winding inter-turn short-circuit diagnosis and experimental research on doubly-fed wind generator

When occurrence of doubly-fed wind generator stator winding slight inter-turn short circuit,the three-phase stator current changes very little,but the Park'vector figure of three-phase stator current has obvious changes in fault.The paper simulates doubly-fed machine based on multi-loop theory and makes test mode of action to draw the Park'vector figure between normal and inter-turn short circuit conditions.Through the shape and the width of comparison of the Park'vector track,this paper determines whether it has inter-turn short circuit or not and estimates the severity of short-circuit.