Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Wave Energy Extraction using Partially Submerged Pendulum Plate with Quay Wall

안벽 앞에 부분 잠긴 진자판에 의한 파랑에너지 추출

  • Cho, Il-Hyoung (Department of Ocean System Engineering, Jeju National University) ;
  • Lee, Hyebin (Multidisciplinary Graduate School for Wind Energy, Jeju National University) ;
  • Bae, Yoon Hyeok (Department of Ocean System Engineering, Jeju National University)
  • 조일형 (제주대학교 해양시스템공학과) ;
  • 이혜빈 (제주대학교 풍력대학원) ;
  • 배윤혁 (제주대학교 해양시스템공학과)
  • Received : 2017.04.03
  • Accepted : 2017.06.16
  • Published : 2017.06.30
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Abstract

The performance of a wave energy converter (WEC) that uses the rolling motion of a partially submerged pendulum plate in front of a quay wall was analyzed. The wave exciting moment and hydrodynamic moment were obtained using a matched eigenfunction expansion method (MEEM) based on the linear potential theory, and then the roll motion response of a pendulum plate, time averaged extracted power, and efficiency were investigated. The optimal PTO damping coefficient was suggested to give the optimal extracted power. The peak value of the optimal extracted power occurs at the resonant frequency. The resonant peak and its width increase as the submergence depth of the pendulum plate decreases and thickness of the pendulum plate increases. An increase in the wave incidence angle reduces the efficiency of the wave energy converter. In addition, the WEC using a rolling pendulum plate contributes not only to the extraction of the wave energy, but also to a reduction in the waves reflected from the quay wall, which helps to stabilize ships going near the quay wall.

Keywords

References

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