IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v153y2020icp681-700.html
   My bibliography  Save this article

Concept and performance of a novel wave energy converter: Variable Aperture Point-Absorber (VAPA)

Author

Listed:
  • Zheng, Siming
  • Zhang, Yongliang
  • Iglesias, Gregorio

Abstract

Ocean waves are a huge and largely untapped resource of green energy. In order to extract energy from waves, a novel wave energy converter (WEC) consisting of a floating, hollow cylinder capped by a roof with a variable aperture is presented in this paper. The power take-off (PTO) system is composed of a linear generator attached to the seabed, driven by the heave motion of the floating cylinder through a tether line. The air pressure within the cylinder can be modified by adjusting the roof aperture. The hydrodynamic characteristics of this WEC are investigated through an analytical model based on potential flow theory, in which the wave diffraction/radiation problems are coupled with the air pressure fluctuation and PTO system. Analytical expressions are derived for the maximum power absorbed by the WEC under different optimization principles, revolving around the PTO damping, roof aperture damping and non-negative mooring stiffness. We find that the best power absorption is obtained when the aperture is either completely open or entirely closed, depending on the wave conditions. Intermediate values of the aperture are useful to minimize the heave motion and thus ensure survivability under extreme sea states.

Suggested Citation

  • Zheng, Siming & Zhang, Yongliang & Iglesias, Gregorio, 2020. "Concept and performance of a novel wave energy converter: Variable Aperture Point-Absorber (VAPA)," Renewable Energy, Elsevier, vol. 153(C), pages 681-700.
    • Handle: RePEc:eee:renene:v:153:y:2020:i:c:p:681-700
    DOI: 10.1016/j.renene.2020.01.134
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148120301567
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2020.01.134?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Lejerskog, Erik & Boström, Cecilia & Hai, Ling & Waters, Rafael & Leijon, Mats, 2015. "Experimental results on power absorption from a wave energy converter at the Lysekil wave energy research site," Renewable Energy, Elsevier, vol. 77(C), pages 9-14.
    2. Carballo, R. & Sánchez, M. & Ramos, V. & Taveira-Pinto, F. & Iglesias, G., 2014. "A high resolution geospatial database for wave energy exploitation," Energy, Elsevier, vol. 68(C), pages 572-583.
    3. Pasquale Contestabile & Enrico Di Lauro & Mariano Buccino & Diego Vicinanza, 2016. "Economic Assessment of Overtopping BReakwater for Energy Conversion (OBREC): A Case Study in Western Australia," Sustainability, MDPI, vol. 9(1), pages 1-28, December.
    4. Ransley, E.J. & Greaves, D.M. & Raby, A. & Simmonds, D. & Jakobsen, M.M. & Kramer, M., 2017. "RANS-VOF modelling of the Wavestar point absorber," Renewable Energy, Elsevier, vol. 109(C), pages 49-65.
    5. Iglesias, G. & Carballo, R., 2009. "Wave energy potential along the Death Coast (Spain)," Energy, Elsevier, vol. 34(11), pages 1963-1975.
    6. 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.
    7. Astariz, S. & Iglesias, G., 2015. "The economics of wave energy: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 45(C), pages 397-408.
    8. Jonas Sjolte & Christian McLisky Sandvik & Elisabetta Tedeschi & Marta Molinas, 2013. "Exploring the Potential for Increased Production from the Wave Energy Converter Lifesaver by Reactive Control," Energies, MDPI, vol. 6(8), pages 1-28, July.
    9. Astariz, S. & Iglesias, G., 2016. "Output power smoothing and reduced downtime period by combined wind and wave energy farms," Energy, Elsevier, vol. 97(C), pages 69-81.
    10. S. A. Mavrakos & D. N. Konispoliatis, 2012. "Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column Device," Journal of Applied Mathematics, Hindawi, vol. 2012, pages 1-27, November.
    11. Veigas, M. & Ramos, V. & Iglesias, G., 2014. "A wave farm for an island: Detailed effects on the nearshore wave climate," Energy, Elsevier, vol. 69(C), pages 801-812.
    12. Zheng, Siming & Zhang, Yongliang, 2018. "Theoretical modelling of a new hybrid wave energy converter in regular waves," Renewable Energy, Elsevier, vol. 128(PA), pages 125-141.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Zheng, Siming & Phillips, John Wilfrid & Hann, Martyn & Greaves, Deborah, 2023. "Mathematical modelling of a floating Clam-type wave energy converter," Renewable Energy, Elsevier, vol. 210(C), pages 280-294.
    2. Ren, Junqing & Jin, Peng & Liu, Yingyi & Zang, Jun, 2021. "Wave attenuation and focusing by a parabolic arc pontoon breakwater," Energy, Elsevier, vol. 217(C).
    3. Cheng, Yong & Xi, Chen & Dai, Saishuai & Ji, Chunyan & Cocard, Margot & Yuan, Zhiming & Incecik, Atilla, 2021. "Performance characteristics and parametric analysis of a novel multi-purpose platform combining a moonpool-type floating breakwater and an array of wave energy converters," Applied Energy, Elsevier, vol. 292(C).
    4. Chen, Weixing & Lin, Xiongsen & Lu, Yunfei & Li, Shaoxun & Wang, Lucai & Zhang, Yongkuang & Gao, Feng, 2023. "Design and experiment of a double-wing wave energy converter," Renewable Energy, Elsevier, vol. 202(C), pages 1497-1506.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Li, Xiaofan & Chen, ChienAn & Li, Qiaofeng & Xu, Lin & Liang, Changwei & Ngo, Khai & Parker, Robert G. & Zuo, Lei, 2020. "A compact mechanical power take-off for wave energy converters: Design, analysis, and test verification," Applied Energy, Elsevier, vol. 278(C).
    2. Rusu, Liliana & Onea, Florin, 2015. "Assessment of the performances of various wave energy converters along the European continental coasts," Energy, Elsevier, vol. 82(C), pages 889-904.
    3. López, I. & Castro, A. & Iglesias, G., 2015. "Hydrodynamic performance of an oscillating water column wave energy converter by means of particle imaging velocimetry," Energy, Elsevier, vol. 83(C), pages 89-103.
    4. Cui, Lin & Zheng, Siming & Zhang, Yongliang & Miles, Jon & Iglesias, Gregorio, 2021. "Wave power extraction from a hybrid oscillating water column-oscillating buoy wave energy converter," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    5. Tunde Aderinto & Hua Li, 2019. "Review on Power Performance and Efficiency of Wave Energy Converters," Energies, MDPI, vol. 12(22), pages 1-24, November.
    6. Eugen Rusu, 2014. "Evaluation of the Wave Energy Conversion Efficiency in Various Coastal Environments," Energies, MDPI, vol. 7(6), pages 1-17, June.
    7. Fairley, I. & Smith, H.C.M. & Robertson, B. & Abusara, M. & Masters, I., 2017. "Spatio-temporal variation in wave power and implications for electricity supply," Renewable Energy, Elsevier, vol. 114(PA), pages 154-165.
    8. Zheng, Siming & Zhang, Yongliang & Iglesias, Gregorio, 2020. "Power capture performance of hybrid wave farms combining different wave energy conversion technologies: The H-factor," Energy, Elsevier, vol. 204(C).
    9. Astariz, S. & Iglesias, G., 2016. "Co-located wind and wave energy farms: Uniformly distributed arrays," Energy, Elsevier, vol. 113(C), pages 497-508.
    10. Carballo, R. & Arean, N. & Álvarez, M. & López, I. & Castro, A. & López, M. & Iglesias, G., 2019. "Wave farm planning through high-resolution resource and performance characterization," Renewable Energy, Elsevier, vol. 135(C), pages 1097-1107.
    11. Sharay Astariz & Gregorio Iglesias, 2015. "Enhancing Wave Energy Competitiveness through Co-Located Wind and Wave Energy Farms. A Review on the Shadow Effect," Energies, MDPI, vol. 8(7), pages 1-23, July.
    12. Astariz, S. & Perez-Collazo, C. & Abanades, J. & Iglesias, G., 2015. "Towards the optimal design of a co-located wind-wave farm," Energy, Elsevier, vol. 84(C), pages 15-24.
    13. Astariz, S. & Iglesias, G., 2016. "Output power smoothing and reduced downtime period by combined wind and wave energy farms," Energy, Elsevier, vol. 97(C), pages 69-81.
    14. Chenglong Guo & Wanan Sheng & Dakshina G. De Silva & George Aggidis, 2023. "A Review of the Levelized Cost of Wave Energy Based on a Techno-Economic Model," Energies, MDPI, vol. 16(5), pages 1-30, February.
    15. George Lavidas & Francesco De Leo & Giovanni Besio, 2020. "Blue Growth Development in the Mediterranean Sea: Quantifying the Benefits of an Integrated Wave Energy Converter at Genoa Harbour," Energies, MDPI, vol. 13(16), pages 1-14, August.
    16. Jin, Peng & Zheng, Zhi & Zhou, Zhaomin & Zhou, Binzhen & Wang, Lei & Yang, Yang & Liu, Yingyi, 2023. "Optimization and evaluation of a semi-submersible wind turbine and oscillating body wave energy converters hybrid system," Energy, Elsevier, vol. 282(C).
    17. Lavidas, George, 2019. "Energy and socio-economic benefits from the development of wave energy in Greece," Renewable Energy, Elsevier, vol. 132(C), pages 1290-1300.
    18. George Lavidas & Vengatesan Venugopal, 2018. "Energy Production Benefits by Wind and Wave Energies for the Autonomous System of Crete," Energies, MDPI, vol. 11(10), pages 1-14, October.
    19. Manuel Corrales-Gonzalez & George Lavidas & Giovanni Besio, 2023. "Feasibility of Wave Energy Harvesting in the Ligurian Sea, Italy," Sustainability, MDPI, vol. 15(11), pages 1-22, June.
    20. Satymov, Rasul & Bogdanov, Dmitrii & Dadashi, Mojtaba & Lavidas, George & Breyer, Christian, 2024. "Techno-economic assessment of global and regional wave energy resource potentials and profiles in hourly resolution," Applied Energy, Elsevier, vol. 364(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:153:y:2020:i:c:p:681-700. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.