Thermal Field and Stress Analysis of Induction Motor with Stator Inter-Turn Fault

Inter-turn fault (ITF), a typical motor fault, results in significant variations the thermal characteristics of motor. For temperature rise (TR) experiments and field-stress field simulations an induction are carried out to reveal related ITF. First, based on actual structure cooling type motor, whole-domain simulation model was established. The reasonable equivalence calculation heat transfer boundaries were conducted during modeling process. Then, three-dimensional transient under rated load before after obtained, accuracy could be validated through comparison measured TR at several temperature-measuring points. heat-transfer law notable can presented by analyzing simulated data. In addition, feature is proposed provide reference for diagnosis using difference winding different positions moments. Finally, rotor stress distribution normal faulty obtained thermal-stress-coupled calculation, which used evaluate possibility caused