Analysis of Overvoltage Distribution in Stator Winding of Induction Motor Driven by IGBT PWM Inverter

IGBT 인버터 구동 유도전동기 고정자 권선에서의 과도전압 분포 해석

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, equivalent circuit model of inverter-cable-motor was proposed and high frequency parameter is computed by using finite element method (FEM). Electro-magnetic transient program (EMTP) analysis of the whole system for induction motor and PWM inverter is proposed. Induction motor, 50[HP], and a switching surge generator was built to consider the voltage distribution. The results of EMTP analysis compared with experimental results.