Journal of the Korean Society for Marine Environment & Energy (한국해양환경ㆍ에너지학회지)

The Korean Society for Marine Environment and Energy (한국해양환경•에너지학회)
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Latching Control Strategy for Improvement Wave Energy Conversion in Irregular Waves

불규칙파중 파랑에너지 변환효율 향상을 위한 래칭 제어전략

  • Cho, Il Hyoung (Department of Ocean System Engineering, Jeju National University) ;
  • Kim, Jeong Rok (Department of Ocean System Engineering, Jeju National University) ;
  • Kim, Kyong-Hwan (Offshore Plant Research Division, Korea Research Institute of Ships & Ocean Engineering) ;
  • Hong, Keyyong (Offshore Plant Research Division, Korea Research Institute of Ships & Ocean Engineering)
  • 조일형 (제주대학교 해양시스템공학과) ;
  • 김정록 (제주대학교 해양시스템공학과) ;
  • 김경환 (한국해양과학기술원 부설 선박해양플랜트연구소, 해양플랜트연구부) ;
  • 홍기용 (한국해양과학기술원 부설 선박해양플랜트연구소, 해양플랜트연구부)
  • Received : 2015.08.28
  • Accepted : 2015.10.21
  • Published : 2015.11.25
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Abstract

The wave spectrum was generated from wave data measured at the Chagwi-do site in Jeju, where a 10MW class floating wave-offshore wind hybrid power generation system will be installed. The latching control technology (Sheng et al.[2015]) was applied in order to improve the extracted power from WEC (Wave Energy Converter), which is heaving in corresponding irregular waves. The peak period as a representative value of irregular waves was used when we determined the latching duration. From the numerical results in the time-domain analysis, the latching control technology can significantly improve the extracted power about 50%.

10 MW급의 파력-해상풍력 복합발전 플랫폼 설치해역으로 고려되고 있는 차귀도 해역에서 측정된 파랑정보를 이용하여 파랑스펙트럼을 구하고, 이로부터 생성된 불규칙파에 따라 수직 운동하는 파력발전기에 Sheng et al.(2015)이 제안한 래칭 제어기법을 적용하였다. 래칭 시간을 정할 때 필요한 입사파의 주기로 불규칙파의 통계 대푯값인 피크 주기를 사용하였다. 래칭 제어기법을 불규칙파중 부이의 시간영역 해석에 적용한 결과, 약 50%의 추출파워의 증가를 가져왔다.

Keywords

References

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