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A study on the design and performance of ModuleRaft wave energy converter

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  • Tongphong, Watchara
  • Kim, Byung-Ha
  • Kim, In-Cheol
  • Lee, Young-Ho

Abstract

This paper presents a novel wave energy converter (WEC), referred to as the ModuleRaft WEC. The WEC consists of a floating modular flap and four rafts hinged at the main floating structure. ModuleRaft WEC is unique due to its ability to convert both wave potential energy and wave kinetic energy by utilizing the pitch motion of rafts and floating modular flap. The motion characteristic, performance and optimization of the ModuleRaft wave energy converter are investigated under regular wave conditions using ANSYS-AQWA. The effect of wave frequency, power take-off (PTO) damping coefficient and floating/fixed main structure on capture factor is analyzed. Results indicate that using a single point mooring (SPM) system, the ModuleRaft WEC can operate optimally by utilizing all directions wave energy. In addition, comparing WEC with and without rafts, it was found that the capture factor of the modular flap with rafts is much better than the conventional floating modular flap-type WEC. Moreover, the three most influential parameters; wave frequency, PTO damping coefficient and fixed main structure, have a significant effect on the capture factor of the ModuleRaft WEC.

Suggested Citation

  • Tongphong, Watchara & Kim, Byung-Ha & Kim, In-Cheol & Lee, Young-Ho, 2021. "A study on the design and performance of ModuleRaft wave energy converter," Renewable Energy, Elsevier, vol. 163(C), pages 649-673.
    • Handle: RePEc:eee:renene:v:163:y:2021:i:c:p:649-673
    DOI: 10.1016/j.renene.2020.08.130
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    References listed on IDEAS

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    1. Yu, Hui-Feng & Zhang, Yong-Liang & Zheng, Si-Ming, 2016. "Numerical study on the performance of a wave energy converter with three hinged bodies," Renewable Energy, Elsevier, vol. 99(C), pages 1276-1286.
    2. Tom, N.M. & Lawson, M.J. & Yu, Y.H. & Wright, A.D., 2016. "Development of a nearshore oscillating surge wave energy converter with variable geometry," Renewable Energy, Elsevier, vol. 96(PA), pages 410-424.
    3. Gunawardane, S.D.G.S.P. & Folley, M. & Kankanamge, C.J., 2019. "Analysis of the hydrodynamics of four different oscillating wave surge converter concepts," Renewable Energy, Elsevier, vol. 130(C), pages 843-852.
    4. López, Iraide & Andreu, Jon & Ceballos, Salvador & Martínez de Alegría, Iñigo & Kortabarria, Iñigo, 2013. "Review of wave energy technologies and the necessary power-equipment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 27(C), pages 413-434.
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    Cited by:

    1. Chen, Weixing & Zhou, Boen & Huang, Hao & Lu, Yunfei & Li, Shaoxun & Gao, Feng, 2022. "Design, modeling and performance analysis of a deployable WEC for ocean robots," Applied Energy, Elsevier, vol. 327(C).

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