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Loss Calculation and Thermal Analysis of an Induction Motor under ITSC Fault Condition

As the working horse in the industrial world, induction motors are widely applied in many important areas. Hence, it is crucial to investigate the fault operation conditions that would cause their deterioration of working performance or even failures, such as the inter-turn short-circuit (ITSC) fault. This study aims at analyzing the extra generated loss and induced thermal response in an 11kW induction motor under such a fault scenario. Specifically, a new finite element model with separated conductors in the stator slot is built, which characterizes the physics of ITSC fault propagation at different stages by varying the numbers of shorted conductors. In addition, the ITSC fault is implemented in different positions of the stator slots and the consequent motor temperature distributions are analyzed as well.