Dual-Inverter-Fed Open-End Winding InductionMotor based Bearing Currents and Shaft Voltage Reduction

Abstract

Connection of two 2-stage inverters on the two ends of anopen end winding induction motor with equal DC-hyperlink voltages isidentical to a traditional 3- level inverter. Better fault toleranceand adaptability in controlling is received in open-finish windingdesktop configuration in comparison with a traditional threephase neutral related electric motor. Two voltage entities, particularly, fashioned-mode voltage (CMV) and differential modevoltage are identified within the twin inverter, and all hybrid PWMs are envisaged aimed toward decreasing and likewise eliminatingthe CMV in it. The consequences of such attempts on motor shaft voltage and likewise the motor bearing currents are offeredin detail. Additionally, bearing present profiles of an open-finish winding induction motor are additionally presented with bothconventional and hybrid PWMs proposed in this paper. Electrical discharge machining discharge currents arewholly eradicated with the use of all hybrid PWM ways proposed in this paper. Moreover, implications offully disposing of the CMV are also awarded on this paper.