Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A New Space-Vector PWM Inverters without Phase Current Sensors

상전류센서 없는 새로운 방식의 공간 전압 벡터 PWM 인버터

  • Joo, Hyeong-Gil (R&D Center, Leechun Electric Mfg. Co. Ltd.) ;
  • Shin, Hwi-Beom (Department of Electrical Engineering, Gyeongsang National University) ;
  • Kim, Chang-Gyun (Department of Electrical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Youn, Myung-Joong (Department of Electrical Engineering, Korea Advanced Institute of Science and Technology)
  • Published : 1996.07.22
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Abstract

A method for detecting the three-phase currents of a voltage-fed pulsewidth modulated(PWM) inverter is proposed by utilizing only one current sensor placed on the dc-link. The proposed space vector PWM technique is two phase modulated PWM, this enables to detect the phase currents from only one DC link current sensor. The proposed method is simple, reduces the cost, and provides the small detection errors.

Keywords