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Scale-Model Experiments for the Surface Wave Influence on a Submerged Floating Ocean-Current Turbine

Author

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  • Katsutoshi Shirasawa

    (Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan)

  • Junichiro Minami

    (Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan)

  • Tsumoru Shintake

    (Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan)

Abstract

In order to harness the kinetic energy of marine currents, we propose a novel ocean-current turbine with a horizontal axis. The turbine can be moored to the seabed and function similarly to kites in a water flow. To operate such turbines in a marine current, the resulting rotor torque needs to be canceled. Therefore, the proposed turbine is designed with a float at its top and a counterweight at its bottom. Thus far, we have verified the turbine stability and blade performance through towing experiments. As the next step, we constructed a scale-model turbine to confirm the mooring system. This experiment was performed at a circulating water channel with wave-making facilities. The influence of waves on the floating body was also investigated. In this paper, we report the behavior of the scale-model turbine moored to the tank bottom and discuss the influence of surface waves.

Suggested Citation

  • Katsutoshi Shirasawa & Junichiro Minami & Tsumoru Shintake, 2017. "Scale-Model Experiments for the Surface Wave Influence on a Submerged Floating Ocean-Current Turbine," Energies, MDPI, vol. 10(5), pages 1-12, May.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:5:p:702-:d:98803
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    References listed on IDEAS

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    1. Chen, Falin, 2010. "Kuroshio power plant development plan," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(9), pages 2655-2668, December.
    2. Weller, S.D. & Johanning, L. & Davies, P. & Banfield, S.J., 2015. "Synthetic mooring ropes for marine renewable energy applications," Renewable Energy, Elsevier, vol. 83(C), pages 1268-1278.
    3. Shirasawa, Katsutoshi & Tokunaga, Kohei & Iwashita, Hidetsugu & Shintake, Tsumoru, 2016. "Experimental verification of a floating ocean-current turbine with a single rotor for use in Kuroshio currents," Renewable Energy, Elsevier, vol. 91(C), pages 189-195.
    4. Chang, Yu-Chia & Chu, Peter C. & Tseng, Ruo-Shan, 2015. "Site selection of ocean current power generation from drifter measurements," Renewable Energy, Elsevier, vol. 80(C), pages 737-745.
    5. Luznik, Luksa & Flack, Karen A. & Lust, Ethan E. & Taylor, Katharin, 2013. "The effect of surface waves on the performance characteristics of a model tidal turbine," Renewable Energy, Elsevier, vol. 58(C), pages 108-114.
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    Cited by:

    1. Wenbin Su & Hongbo Wei & Penghua Guo & Qiao Hu & Mengyuan Guo & Yuanjie Zhou & Dayu Zhang & Zhufeng Lei & Chaohui Wang, 2021. "Research on Hydraulic Conversion Technology of Small Ocean Current Turbines for Low-Flow Current Energy Generation," Energies, MDPI, vol. 14(20), pages 1-19, October.
    2. Tsao, Che-Chih & Chen, Zhi-Xiang & Feng, An-Hsuan & Baharudin, Agus, 2023. "Study of concentrated anchoring, siting, system layout and preliminary cost analysis for a large scale Kuroshio power plant by the cross-stream active mooring," Renewable Energy, Elsevier, vol. 205(C), pages 66-93.

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