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Power capture performance of hybrid wave farms combining different wave energy conversion technologies: The H-factor

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

Abstract

In this paper we consider hybrid wave farms, in which different types of WEC are combined, through a case study involving oscillating water columns (OWCs) and point-absorbers (PAs). A new parameter, called “H-factor”, is introduced to compare hybrid (multi-type) and conventional (single-type) wave farms in terms of wave power capture. We develop an ad hoc semi-analytical model to calculate the H-factor in a computationally efficient manner, and apply it to investigate how the H-factor and, consequently, the power capture, depend on: (i) the spacing and layout of the WECs, (ii) the type of WEC technology, and (iii) the wave conditions. We discuss the influence of these factors and, in the process, show that the H-factor is a valuable decision-aid tool. For specified wave conditions and layout limitations, a conventional wave farm may not be the most efficient option as a result of a destructive array effect, whereas a hybrid farm can be more efficient if a constructive hybrid effect occurs (if the H-factor value is above unity). This constructive hybrid effect can even overcome the destructive array effect for specified cases, demonstrating the potential advantage of hybrid wave farms relative to conventional wave farms.

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  • 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).
    • Handle: RePEc:eee:energy:v:204:y:2020:i:c:s0360544220310276
    DOI: 10.1016/j.energy.2020.117920
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    References listed on IDEAS

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    Cited by:

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    2. Silva, R.N. & Nunes, M.M. & Oliveira, F.L. & Oliveira, T.F. & Brasil, A.C.P. & Pinto, M.S.S., 2023. "Dynamical analysis of a novel hybrid oceanic tidal-wave energy converter system," Energy, Elsevier, vol. 263(PD).
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    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. Cui, Lidong & Sergiienko, Nataliia Y. & Leontini, Justin S. & Cohen, Nadav & Bennetts, Luke G. & Cazzolato, Benjamin & Turner, Ian L. & Flocard, Francois & Westcott, Amy-Rose & Cheng, Fanrui & Manasse, 2024. "Protecting coastlines by offshore wave farms: On optimising array configurations using a corrected far-field approximation," Renewable Energy, Elsevier, vol. 224(C).
    6. Zhou, Binzhen & Wang, Yu & Zheng, Zhi & Jin, Peng & Ning, Dezhi, 2023. "Power generation and wave attenuation of a hybrid system involving a heaving cylindrical wave energy converter in front of a parabolic breakwater," Energy, Elsevier, vol. 282(C).
    7. Chen, Jing & Wen, Hongjie & Wang, Yongxue & Ren, Bing, 2020. "Experimental investigation of an annular sector OWC device incorporated into a dual cylindrical caisson breakwater," Energy, Elsevier, vol. 211(C).
    8. Wang, Yuhan & Dong, Sheng, 2023. "Analytical investigation on a wave energy converter-dual-arc breakwater integration system," Energy, Elsevier, vol. 285(C).
    9. Iván López & Rodrigo Carballo & David Mateo Fouz & Gregorio Iglesias, 2021. "Design Selection and Geometry in OWC Wave Energy Converters for Performance," Energies, MDPI, vol. 14(6), pages 1-18, March.
    10. Cheng, Yong & Fu, Lei & Dai, Saishuai & Collu, Maurizio & Cui, Lin & Yuan, Zhiming & Incecik, Atilla, 2022. "Experimental and numerical analysis of a hybrid WEC-breakwater system combining an oscillating water column and an oscillating buoy," Renewable and Sustainable Energy Reviews, Elsevier, vol. 169(C).
    11. Zheng, Siming & Michele, Simone & Liang, Hui & Iglesias, Gregorio & Greaves, Deborah, 2024. "Wave power extraction from a wave farm of tubular structure integrated oscillating water columns," Renewable Energy, Elsevier, vol. 225(C).
    12. Han, Meng & Cao, Feifei & Shi, Hongda & Zhu, Kai & Dong, Xiaochen & Li, Demin, 2023. "Layout optimisation of the two-body heaving wave energy converter array," Renewable Energy, Elsevier, vol. 205(C), pages 410-431.
    13. Mohapatra, Piyush & Vijay, K.G. & Bhattacharyya, Anirban & Sahoo, Trilochan, 2023. "Influence of distinct bottom geometries on the hydrodynamic performance of an OWC device," Energy, Elsevier, vol. 277(C).
    14. Mahdavi-Meymand, Amin & Sulisz, Wojciech, 2024. "Development of pyramid neural networks for prediction of significant wave height for renewable energy farms," Applied Energy, Elsevier, vol. 362(C).
    15. Wang, Chen & Zhang, Yongliang & Deng, Zhengzhi, 2022. "A novel dual-chamber oscillating water column system with dual lip-wall pitching motions for wave energy conversion," Energy, Elsevier, vol. 246(C).

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