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Performance of optimally tuned arrays of heaving point absorbers

Author

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  • Sinha, Ashank
  • Karmakar, D.
  • Guedes Soares, C.

Abstract

Arrays of heaving point absorbers in various arrangements are analysed to study their performance in terms of the amount of power absorption and the power uniformity among floaters. The numerical simulations for the determination of hydrodynamic coefficients and forces are obtained using a Boundary Element Method (BEM) code. A linear external damping coefficient is applied to enable power extraction and a supplementary mass is introduced to tune the floater to the incoming wave conditions. Each floater is assumed to have its own identical power take-off system. The external damping coefficient and the supplementary mass are individually optimized for each floater to maximize the total power absorption by the array. This optimization is implemented with slamming, stroke and force restrictions imposed on the floater motion by SQP method. Attention is also paid to the performance of each floater in various arrangements. Furthermore, the effect of incoming wave headings is taken into account. To quantify the performance, q-factor and coefficient of variation are compared for each array for a range of sea states. This present study will be helpful in the understanding and design of the best possible configuration of arrays of heaving point absorber WEC systems to extract more wave power and achieve better power recovery uniformity.

Suggested Citation

  • Sinha, Ashank & Karmakar, D. & Guedes Soares, C., 2016. "Performance of optimally tuned arrays of heaving point absorbers," Renewable Energy, Elsevier, vol. 92(C), pages 517-531.
    • Handle: RePEc:eee:renene:v:92:y:2016:i:c:p:517-531
    DOI: 10.1016/j.renene.2016.02.043
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    Cited by:

    1. Wei, Y. & Barradas-Berglind, J.J. & Yu, Z. & van Rooij, M. & Prins, W.A. & Jayawardhana, B. & Vakis, A.I., 2019. "Frequency-domain hydrodynamic modelling of dense and sparse arrays of wave energy converters," Renewable Energy, Elsevier, vol. 135(C), pages 775-788.
    2. 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.
    3. Rony, J.S. & Karmakar, D., 2024. "Hydrodynamic response analysis of a hybrid TLP and heaving-buoy wave energy converter with PTO damping," Renewable Energy, Elsevier, vol. 226(C).
    4. Battisti, Beatrice & Giorgi, Giuseppe & Fernandez, Gael Verao, 2024. "Balancing power production and coastal protection: A bi-objective analysis of Wave Energy Converters," Renewable Energy, Elsevier, vol. 220(C).
    5. He, Guanghua & Luan, Zhengxiao & Zhang, Wei & He, Runhua & Liu, Chaogang & Yang, Kaibo & Yang, Changhao & Jing, Penglin & Zhang, Zhigang, 2023. "Review on research approaches for multi-point absorber wave energy converters," Renewable Energy, Elsevier, vol. 218(C).
    6. He, Guanghua & Luan, Zhengxiao & Jin, Ruijia & Zhang, Wei & Wang, Wei & Zhang, Zhigang & Jing, Penglin & Liu, Pengfei, 2022. "Numerical and experimental study on absorber-type wave energy converters concentrically arranged on an octagonal platform," Renewable Energy, Elsevier, vol. 188(C), pages 504-523.
    7. Xiaohui Zeng & Qi Wang & Yuanshun Kang & Fajun Yu, 2022. "A Novel Type of Wave Energy Converter with Five Degrees of Freedom and Preliminary Investigations on Power-Generating Capacity," Energies, MDPI, vol. 15(9), pages 1-20, April.
    8. Calvário, M. & Gaspar, J.F. & Kamarlouei, M. & Hallak, T.S. & Guedes Soares, C., 2020. "Oil-hydraulic power take-off concept for an oscillating wave surge converter," Renewable Energy, Elsevier, vol. 159(C), pages 1297-1309.
    9. Piscopo, V. & Benassai, G. & Della Morte, R. & Scamardella, A., 2020. "Towards a unified formulation of time and frequency-domain models for point absorbers with single and double-body configuration," Renewable Energy, Elsevier, vol. 147(P1), pages 1525-1539.
    10. Bechlenberg, Alva & Wei, Yanji & Jayawardhana, Bayu & Vakis, Antonis I., 2023. "Analysing the influence of power take-off adaptability on the power extraction of dense wave energy converter arrays," Renewable Energy, Elsevier, vol. 211(C), pages 1-12.

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