Ocean Systems Engineering

  • 제9권1호
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  • Pages.1-19
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  • 2019
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
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Numerical calculation and experiment of a heaving-buoy wave energy converter with a latching control

  • Kim, Jeongrok (Department of Ocean System Engineering, Jeju National University) ;
  • Cho, Il-Hyoung (Department of Ocean System Engineering, Jeju National University) ;
  • Kim, Moo-Hyun (Department of Ocean Engineering, Texas A&M University)
  • 투고 : 2018.10.19
  • 심사 : 2018.12.08
  • 발행 : 2019.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Latching control was applied to a Wave Energy Converter (WEC) buoy with direct linear electric Power Take-Off (PTO) systems oscillating in heave direction in waves. The equation of the motion of the WEC buoy in the time-domain is characterized by the wave exciting, hydrostatic, radiation forces and by several damping forces (PTO, brake, and viscous). By applying numerical schemes, such as the semi-analytical and Newmark ${\beta}$ methods, the time series of the heave motion and velocity, and the corresponding extracted power may be obtained. The numerical prediction with the latching control is in accordance with the experimental results from the systematic 1:10-model test in a wave tank at Seoul National University. It was found that the extraction of wave energy may be improved by applying latching control to the WEC, which particularly affects waves longer than the resonant period.

키워드

과제정보

연구 과제 주관 기관 : Jeju National University

참고문헌

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피인용 문헌

  1. Development of a Three-Dimensional Fully Nonlinear Potential Numerical Wave Tank for a Heaving Buoy Wave Energy Converter vol.2019, 2019, https://doi.org/10.1155/2019/5163597
  2. Numerical and experimental study on hydrodynamic performance of multi-level OWEC vol.10, pp.4, 2019, https://doi.org/10.12989/ose.2020.10.4.359
  3. Cross Product and Partitioned Filtering-Based Graham Convex Hull for Buoy Drifting Area Demarcating vol.2021, 2019, https://doi.org/10.1155/2021/7713884