Proceedings of the KSR Conference (한국철도학회:학술대회논문집)

The Korean Society for Railway (한국철도학회)
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Measurement and Analysis of Transient Overvoltages on Inverter-fed Induction Motors

인버터 구동 유도전동기에서 과도전압의 측정과 분석

  • 박대원 (한국해양대학교 대학원) ;
  • 김일권 (한국해양대학교 대학원) ;
  • 최수연 (한국해양대학교 대학원) ;
  • 박찬용 (한국해양대학교 대학원) ;
  • 길경석 (한국해양대학교 전기전자공학부)
  • Published : 2007.11.08
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Abstract

Induction motors are the main driving force of electric vehicles and operated by pulse width modulation (PWM) inverters in speed control. Contrary to full-voltage operation of induction motors, inverter-fed induction motors (IFM) generates transient overvoltages up to 10 kV/us and transient overvoltages accelerate the deterioration of winding insulation. We investigated transient overvoltages produced by the operation of IFM and analyzed its peak value and dv/dt depending on power cable length and operation frequency. The experimental results showed that transient overvoltages measured at the motor terminal increased with the cable length between inverter and motor.

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