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Hydraulic Experiments on a Small-Scale Wave Energy Converter with an Unconventional Dummy Pto

Author

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  • Luca Martinelli

    (Department of Civil, Architectural and Environmental Engineering, Università di Padova, 35122 Padova, Italy)

  • Matteo Volpato

    (Department of Civil, Architectural and Environmental Engineering, Università di Padova, 35122 Padova, Italy)

  • Chiara Favaretto

    (Department of Civil, Architectural and Environmental Engineering, Università di Padova, 35122 Padova, Italy)

  • Piero Ruol

    (Department of Civil, Architectural and Environmental Engineering, Università di Padova, 35122 Padova, Italy)

Abstract

This paper investigates on a Wave Energy Converter (WEC) named Energy & Protection, 4th generation (EP4). The WEC couples the energy harvesting function with the purpose of protecting the coast from erosion. It is formed by a flap rolling with a single degree of freedom around a lower hinge. Small-scale tests were carried out in the wave flume of the maritime group of Padua University, aiming at the evaluation of the device efficiency. The test peculiarity is represented by the system used to simulate the Power Take Off (PTO). Such dummy PTO permits a free rotation of two degrees before engaging the shaft, allowing the flap to gain some inertia, and then applying a constant resistive moment. The EP4 was observed to reach a 35% efficiency, under short regular waves. The effects, in terms of coastal protection, are small but not negligible, at least for the shortest waves.

Suggested Citation

  • Luca Martinelli & Matteo Volpato & Chiara Favaretto & Piero Ruol, 2019. "Hydraulic Experiments on a Small-Scale Wave Energy Converter with an Unconventional Dummy Pto," Energies, MDPI, vol. 12(7), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:7:p:1218-:d:218131
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    References listed on IDEAS

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    1. Martinelli, Luca & Zanuttigh, Barbara & Kofoed, Jens Peter, 2011. "Selection of design power of wave energy converters based on wave basin experiments," Renewable Energy, Elsevier, vol. 36(11), pages 3124-3132.
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    6. Amélie Têtu & Francesco Ferri & Morten Bech Kramer & Jørgen Hals Todalshaug, 2018. "Physical and Mathematical Modeling of a Wave Energy Converter Equipped with a Negative Spring Mechanism for Phase Control," Energies, MDPI, vol. 11(9), pages 1-23, September.
    7. Marco Negri & Stefano Malavasi, 2018. "Wave Energy Harnessing in Shallow Water through Oscillating Bodies," Energies, MDPI, vol. 11(10), pages 1-17, October.
    8. Stefano Parmeggiani & Jens Peter Kofoed & Erik Friis-Madsen, 2013. "Experimental Study Related to the Mooring Design for the 1.5 MW Wave Dragon WEC Demonstrator at DanWEC," Energies, MDPI, vol. 6(4), pages 1-24, April.
    9. Luca Martinelli & Barbara Zanuttigh, 2018. "Effects of Mooring Compliancy on the Mooring Forces, Power Production, and Dynamics of a Floating Wave Activated Body Energy Converter," Energies, MDPI, vol. 11(12), pages 1-24, December.
    10. Luca Martinelli & Paolo Pezzutto & Piero Ruol, 2013. "Experimentally Based Model to Size the Geometry of a New OWC Device, with Reference to the Mediterranean Sea Wave Environment," Energies, MDPI, vol. 6(9), pages 1-25, September.
    11. Laura Castro-Santos & Dina Silva & A. Rute Bento & Nadia Salvação & C. Guedes Soares, 2018. "Economic Feasibility of Wave Energy Farms in Portugal," Energies, MDPI, vol. 11(11), pages 1-16, November.
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    Cited by:

    1. Francesco Calise & Maria Vicidomini & Mário Costa & Qiuwang Wang & Poul Alberg Østergaard & Neven Duić, 2019. "Toward an Efficient and Sustainable Use of Energy in Industries and Cities," Energies, MDPI, vol. 12(16), pages 1-28, August.
    2. Luca Martinelli & Giulio Capovilla & Matteo Volpato & Piero Ruol & Chiara Favaretto & Eva Loukogeorgaki & Mauro Andriollo, 2023. "Experimental Investigation of a Hybrid Device Combining a Wave Energy Converter and a Floating Breakwater in a Wave Flume Equipped with a Controllable Actuator," Energies, MDPI, vol. 17(1), pages 1-18, December.
    3. Zitti, Gianluca & Brocchini, Maurizio, 2024. "The role of size and inertia on the hydrodynamics of a self-reacting heave single point absorber wave energy converter," Renewable Energy, Elsevier, vol. 229(C).

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