DOI QR코드

DOI QR Code

Analytic Model of Four-switch Inverter-fed Driving System for Wye or Delta-connected Motor with Current Ripple Reduction Scheme

  • Lee, Dong-Myung (School of Electronic and Electrical Engineering, Hongik University) ;
  • Jung, Jin-Woo (Division of Electronics and Electrical Engineering, Dongguk University) ;
  • Heo, Seo Weon (School of Electronic and Electrical Engineering, Hongik University) ;
  • Kim, Tae Heoung (Dept. of Electrical Engineering, ERI, Gyeongsang National University)
  • 투고 : 2015.05.06
  • 심사 : 2015.07.26
  • 발행 : 2016.01.01

초록

This paper proposes an analytic model for four-switch inverter (FSI)-driven wye (Y) or delta (Δ)-connected motors with a current ripple reduction algorithm. FSIs employ four switches in controlling three-phase load instead of using six switches. They have split dc-link stage, and due to this inherent structure there exists the voltage difference between upper and lower capacitors, which results in distortion of the inverter output voltage. To study characteristics of FSIs, this paper presents an advanced simulation models of FSI-driven control system for 3-phase motor that can has a wire connection either Y or Δ. In addition, this paper introduces a current ripple reduction scheme that mitigates degradation of control performance due to the voltage difference between the dc-link capacitors. The validity of the proposed method and the analytic model is verified by simulations and experiments carried out with 1-HP induction machine with Y or Δ-connection

키워드

과제정보

연구 과제번호 : DFIG 풍력발전시스템의 계통 이상 회피 및 계통 전압 안정화 알고리즘 개발

연구 과제 주관 기관 : 홍익대학교

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