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Oil-hydraulic power take-off concept for an oscillating wave surge converter

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  • Calvário, M.
  • Gaspar, J.F.
  • Kamarlouei, M.
  • Hallak, T.S.
  • Guedes Soares, C.

Abstract

A power take-off oil-hydraulic system is designed for an oscillating wave surge converter. The adaptation of the converter to the power take-off is performed with genetic algorithms in order to find out the optimal geometrical and control parameters, while different power take-off layout configurations are simulated to maximize their efficiency. The simulations show that the power take-off of the oscillating wave surge converter is more effective and efficient, because the converter is driven by bigger excitation wave moments, rather than the resonant characteristics of the point absorber converter, and on the other hand, allows a less constrained design optimization of the mechanical interface with the power take-off. It was verified that these key features allow the production of lower oil flowrates at higher pressure levels, lower oil flow speeds at the cylinder ports and lower ratios between hydraulic peak and averaged power, thus characteristics that must be found in an efficient and effective power take-off.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:159:y:2020:i:c:p:1297-1309
    DOI: 10.1016/j.renene.2020.06.002
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    References listed on IDEAS

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    6. Gaspar, José F. & Calvário, Miguel & Kamarlouei, Mojtaba & Guedes Soares, C., 2016. "Power take-off concept for wave energy converters based on oil-hydraulic transformer units," Renewable Energy, Elsevier, vol. 86(C), pages 1232-1246.
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    Cited by:

    1. Erfan Amini & Danial Golbaz & Fereidoun Amini & Meysam Majidi Nezhad & Mehdi Neshat & Davide Astiaso Garcia, 2020. "A Parametric Study of Wave Energy Converter Layouts in Real Wave Models," Energies, MDPI, vol. 13(22), pages 1-23, November.
    2. Mohd Afifi Jusoh & Mohd Zamri Ibrahim & Muhamad Zalani Daud & Zulkifli Mohd Yusop & Aliashim Albani, 2020. "An Estimation of Hydraulic Power Take-off Unit Parameters for Wave Energy Converter Device Using Non-Evolutionary NLPQL and Evolutionary GA Approaches," Energies, MDPI, vol. 14(1), pages 1-26, December.
    3. Wang, Kunlin & Wang, Zhe & Sheng, Songwei & Zhang, Yaqun & Wang, Zhenpeng & Ye, Yin & Wang, Wensheng & Lin, Hongjun & Huang, Zhenxin, 2023. "A method for large-scale WEC connecting to island isolated microgrid based on multiple small power HPGSs," Renewable Energy, Elsevier, vol. 218(C).
    4. Kamarlouei, Mojtaba & Gaspar, J.F. & Guedes Soares, C., 2022. "Optimal design of an axisymmetric two-body wave energy converter with translational hydraulic power take-off system," Renewable Energy, Elsevier, vol. 183(C), pages 586-600.

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