Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Current Controlled PWM Inverter Using Reduced-Order State Observer

최소 차원 상태 관측기를 사용한 전류 제어형 PWM 인버터에 관한 연구

  • Kim, J.S. (Dept. of Electrical Eng. Dong-A Univ.) ;
  • Lee, C.D. (Dept. of Electrical Eng. Dong-A Univ.) ;
  • Park, O.S. (SsangYong Heavy Industries Co.,Ltd) ;
  • Choi, S.Y. (Dept. of Electrical Eng. Dong-A Univ.) ;
  • Kim, Y.C. (SsangYong Heavy Industries Co.,Ltd) ;
  • Woo, J.I. (Dept. of Electrical Eng. Dong-A Univ.)
  • 김종석 (동아 대학교 전기 공학과) ;
  • 이채동 (동아 대학교 전기 공학과) ;
  • 박욱상 (쌍용 중공업 엔진기술 연구소) ;
  • 최선영 (동아 대학교 전기 공학과) ;
  • 김영철 (쌍용 중공업 엔진기술 연구소) ;
  • 우정인 (동아 대학교 전기 공학과)
  • Published : 1995.07.20
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Abstract

This paper describes a current control method for a single-phase PWM inverter. The proposed PWM inverter utilizes the instantaneous control method which is based on the real-time digital feedback control and the microprocessor-based deadbeat control. For the deadbeat current controller, the system's order becomes a high order and increases computation delay time. Therefore, The delay time produces current ripple. To minimize the current ripple, a new method based on deadbeat control theory for current regulation is proposed. It is constructed by a reduced-order state observer which predicts the output current in next sampling instant.

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