Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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The Improvement of Current Waveforms for a PWM Variable Speed $3{\Phi}$ Induction Motor with the Low Pass LC Filter

저역통과 LC 필터를 이용한 PWM 가변속 3상 유도전동기의 전류파형 개선

  • Nam, Taek-Kun (Division of Marine Engineering, Korea Maritime University) ;
  • Park, Jin-Kil (Division of Marine Engineering, Korea Maritime University) ;
  • Kim, Pil-Jae (Division of Marine Engineering, Korea Maritime University)
  • 남택근 (한국해양대학교 기관공학부) ;
  • 박진길 (한국해양대학교 기관공학부) ;
  • 김필재 (한국해양대학교 기관공학부)
  • Published : 1996.07.22
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Abstract

An AC induction motor or constant speed characteristics has been widely used as power source because of simple structure and low maintenance cost in industrial field. The variable frequency AC source with a conventional inverter which is composed or power semi-conductors and drive systems contains much noises in sine wave current due to high speed switching or direct current. In this paper, the low pass LC filter for a variable speed induction motor driven by a full bridge inverter is introduced to solve EMI problem originated by much noise current. The modified LC filter based on the 3rd order Butterworth LC filter is used for the computer simulations and real experiments. The characteristics or proposed LC filter are investigated through FET analysis.

Keywords