Analysis of Voltage Distribution in Stator Windings of Induction Motor Driven by IGBT PWM Inverter

摘要

IGBT PWM inverter has been concerned that insulation breakdown and irregular voltage distribution on stator winding due to high rate of voltage rise (dv/dt) caused by high-frequency switching and impedance mismatches between inverter and motor. In this paper, voltage distribution in stator windings of induction motor driven by IGBT PWM inverter is studied. To analyze the irregular voltage of stator winding, high frequency parameter is computed by using finite element method (FEM). Electro-magnetic transient program (EMTP) analysis of the whole system, induction motor and PWM inverter, is proposed. An induction motor. 50 [HP], with taps from one phase and a switching surge generator were built to consider the voltage distribution.