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Modelling of the WITT wave energy converter

Author

Listed:
  • Crowley, S.
  • Porter, R.
  • Taunton, D.J.
  • Wilson, P.A.

Abstract

The paper describes the theoretical modelling and experimental validation of a novel design of ocean wave energy converter which is comprised of a floating, moored, spherical hull containing a mechanical pendulum arrangement from which power is taken when excited by incident waves. Experimental results are shown to compare favourably with those predicted by the theory. An explicit expression is derived for the capture width of the proposed device in terms of physical and hydrodynamic parameters. This exposes the multiple resonant characteristics of the device which enable it to operate effectively over a broad range of wave periods. The subsequent efficient computations allows a numerical optimisation of the design to be performed over a large space of device parameters and model sea spectrum. The work is focussed towards producing reliable estimates for the power capacity of different sized devices deployed at the EMEC site in Scotland. Predictions compare favourably with existing wave energy converter concepts.

Suggested Citation

  • Crowley, S. & Porter, R. & Taunton, D.J. & Wilson, P.A., 2018. "Modelling of the WITT wave energy converter," Renewable Energy, Elsevier, vol. 115(C), pages 159-174.
    • Handle: RePEc:eee:renene:v:115:y:2018:i:c:p:159-174
    DOI: 10.1016/j.renene.2017.08.004
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    References listed on IDEAS

    as
    1. Babarit, A., 2015. "A database of capture width ratio of wave energy converters," Renewable Energy, Elsevier, vol. 80(C), pages 610-628.
    2. Cordonnier, J. & Gorintin, F. & De Cagny, A. & Clément, A.H. & Babarit, A., 2015. "SEAREV: Case study of the development of a wave energy converter," Renewable Energy, Elsevier, vol. 80(C), pages 40-52.
    3. Babarit, A. & Hals, J. & Muliawan, M.J. & Kurniawan, A. & Moan, T. & Krokstad, J., 2012. "Numerical benchmarking study of a selection of wave energy converters," Renewable Energy, Elsevier, vol. 41(C), pages 44-63.
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    Citations

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    Cited by:

    1. Hao Tian & Zijian Zhou & Yu Sui, 2019. "Modeling and Validation of an Electrohydraulic Power Take-Off System for a Portable Wave Energy Convertor with Compressed Energy Storage," Energies, MDPI, vol. 12(17), pages 1-15, September.
    2. Antonio Manuel Gómez-Orellana & Juan Carlos Fernández & Manuel Dorado-Moreno & Pedro Antonio Gutiérrez & César Hervás-Martínez, 2021. "Building Suitable Datasets for Soft Computing and Machine Learning Techniques from Meteorological Data Integration: A Case Study for Predicting Significant Wave Height and Energy Flux," Energies, MDPI, vol. 14(2), pages 1-33, January.
    3. Guo, Bingyong & Ringwood, John V., 2021. "Geometric optimisation of wave energy conversion devices: A survey," Applied Energy, Elsevier, vol. 297(C).
    4. Wu, Jinming & Qian, Chen & Zheng, Siming & Chen, Ni & Xia, Dan & Göteman, Malin, 2022. "Investigation on the wave energy converter that reacts against an internal inverted pendulum," Energy, Elsevier, vol. 247(C).

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