AC Motor Shaft Current Suppression Using Active Auxiliary Quasi-Resonant DC Link Snubber-Assisted Inverter

Abstract

This paper presents the motor shaft current suppression scheme which is based upon three-phase voltage source inverter with an auxiliary quasi-resonant dc link snubber. The soft commutation operation in steady state of the active auxiliary quasi-resonant dc link snubber incorporated into the voltage source inverter treated here is described and the effectiveness on the motor shaft current suppression is substantially demonstrated on the basis of the experimental results.