Simulation of a Three-Phase Induction Motor with Stator Inter-Turn Short-Circuit Fault

Three-Phase induction motors (TPIMs) are frequently used in the industry in view of its appealing characteristics. The initial stage in analyzing the various types of faults and investigating their impact on induction motors is to develop a mathematical model and its simulation. If stator winding inter-turn faults are not recognized early on, they might cause catastrophic failure of a TPIM. Hence, to comprehend the impact of stator inter-turn fault and their severity, a mathematical model of an IM with a stator inter-turn short-circuit was developed in this paper. This created mathematical model is implemented using MATLAB. A 7.5 hp, 4-pole, 415 V TPIM is employed in the developed model's simulation to study the motor's performance under full load conditions with variable fault severity. The implication of this kind of fault on currents, electromagnetic torque, and THD fluctuations as fault severity varies is explored. The fault severity changes with fault resistance and the fault current through the shorted turns varies. As a consequence, the model that was developed can identify a stator inter-turn defect as well as determine its severity to predict how a TPIM would function under faulty conditions.