The harmonic components of stator winding current in induction motor will change under the condition of stator inter-turn short circuit. According to these characteristics

in this paper

a novel technique based on morphological maxlifting scheme is proposed for identification of induction motor stator inter-turn short circuit. A max-lifting scheme is applied to process stator winding currents to extract these characteristics. An indicator

r

is computed to identify the short circuit. The transient model of induction motor is employed to simulate oneturn to six-turn stator inter-turn short circuits in an induction motor. Extensive simulation work has been conducted under normal conditions

abnormal conditions (voltage imbalance and varying load)

stator inter-turn short circuit conditions

and conditions of any combinations of the above. The results have shown that the scheme proposed in this paper has a high identification rate for induction motor stator inter-turn short circuit.