Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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A Study on Accurate Phasor Extraction Using a New DC Offset Elimination Filter

새로운 직류 옵셋 제거 필터에 의한 정확한 페이저 추출에 관한 연구

  • Park, Chul-Won (Gangneung-Wonju National University, Dept. of Electrical Engineering) ;
  • Yoon, Hee-Whan (Gangneung-Wonju National University, Information Technology Engineering)
  • 박철원 (강릉원주대학교 전기공학과) ;
  • 윤희환 (강릉원주대학교 정보기술공학과)
  • Received : 2013.02.15
  • Accepted : 2013.05.15
  • Published : 2013.07.31
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Abstract

In this paper, a new DC offset elimination filter is proposed for an accurate phasor extraction of fundamental frequency component. The proposed method can eliminate a DC offset component which is decayed exponentially. The proposed method uses only one cycle of data for phasor extraction computation, which does not need to preset the time constant of the DC offset component. Also, the other advantages of the proposed method is that gain compensation or phase compensation is not required after filtering. Simulations using ATP were performed to evaluate the performance of the proposed filter method, and the results were compared to the ones obtained by conventional methods.

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References

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