The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Disturbance Observer-Based Load Current Estimation Method for Ups Inverter Applications

인버터응용을 위한 외란관측기에 의한 부하전류추정 방법

  • 장재영 (삼성전자 지능시스템연구소) ;
  • 이교범 (고려대학 전기공학과) ;
  • 송중호 (한국과학기술연구원 지능제어연구센터) ;
  • 최익 (한국과학기술연구원 지능제어연구센터) ;
  • 유지윤 (고려대학 전기공학과) ;
  • 최주엽 (광운대학 전기공학과)
  • Published : 2002.03.01
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Abstract

Design and analysis of disturbance observer-based deadbeat control fur single-phase inverter applications are comprehensively presented in this paper. Load current can be estimated by disturbance observer, which is basically structured with the first order equation in this case and is regarded as a relatively simple method in comparison with conventional full-order Luenberger observer. Also, an inherent one-step delay problem appeared in the deadbeat control method is overcome by a simple prediction technique proposed. Output voltage dip is reduced by the feedforward control with the change rate of the estimated load current involved in the deadbeat current control loop. The proposed algorithms are verified by the respective simulation and experiment results.

Keywords

References

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