Mitigation of Circulating Bearing Current in Induction Motor Drive Using Modified ANN Based MRAS for Traction Application

Induction motors are popularly used in various applications because of the proposed modest construction, substantiated process, and limited size specific power. The traditional AC traction drives experimentally analyzed. There is a high circulating current due to Common-Mode Voltage (CMV). Circulating Bearing Current (CBC) major problem conventional two-level voltage source inverter fed parallel-connected sensor-based induction for applications. A sensorless method well known shrinking costs enhancing reliability an motor drive. modified artificial neural network-based model reference adaptive system designed realize speed estimation methods Four dissimilar multilevel network topologies being implemented reduce CBC drives. types T-bridge, Neutral Point Clamped Inverter (NPC), cascaded H-bridge, reduced switch topologies. four compared, best has been identified terms 80% less CMV compared one. H-bridge reduces parallel connected motor; it 50% method. analyzed associated with Finally, drive hardware implemented, performance