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Dynamic Loads and Response of a Spar Buoy Wind Turbine with Pitch-Controlled Rotating Blades: An Experimental Study

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  • Sara Russo

    (Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma, 29, 81031 Aversa, Italy
    Inter-University National Consortium for Marine Sciences (CoNISMa), Piazzale Flaminio, 00144 Rome, Italy)

  • Pasquale Contestabile

    (Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma, 29, 81031 Aversa, Italy
    Inter-University National Consortium for Marine Sciences (CoNISMa), Piazzale Flaminio, 00144 Rome, Italy)

  • Andrea Bardazzi

    (Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma, 29, 81031 Aversa, Italy)

  • Elisa Leone

    (Department of Engineering for Innovation, EUMER Campus Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy)

  • Gregorio Iglesias

    (School of Engineering, University College Cork, College Road, T12 K8AF Cork, Ireland
    Marine Building, School of Engineering, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK)

  • Giuseppe R. Tomasicchio

    (Department of Engineering for Innovation, EUMER Campus Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy)

  • Diego Vicinanza

    (Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma, 29, 81031 Aversa, Italy
    Inter-University National Consortium for Marine Sciences (CoNISMa), Piazzale Flaminio, 00144 Rome, Italy
    CNR-INM, Institute of Marine Engineering, Via di Vallerano 139, 00128 Rome, Italy)

Abstract

New large-scale laboratory data are presented on a physical model of a spar buoy wind turbine with angular motion of control surfaces implemented (pitch control). The peculiarity of this type of rotating blade represents an essential aspect when studying floating offshore wind structures. Experiments were designed specifically to compare different operational environmental conditions in terms of wave steepness and wind speed. Results discussed here were derived from an analysis of only a part of the whole dataset. Consistent with recent small-scale experiments, data clearly show that the waves contributed to most of the model motions and mooring loads. A significant nonlinear behavior for sway, roll and yaw has been detected, whereas an increase in the wave period makes the wind speed less influential for surge, heave and pitch. In general, as the steepness increases, the oscillations decrease. However, higher wind speed does not mean greater platform motions. Data also indicate a significant role of the blade rotation in the turbine thrust, nacelle dynamic forces and power in six degrees of freedom. Certain pairs of wind speed-wave steepness are particularly unfavorable, since the first harmonic of the rotor (coupled to the first wave harmonic) causes the thrust force to be larger than that in more energetic sea states. The experiments suggest that the inclusion of pitch-controlled, variable-speed blades in physical (and numerical) tests on such types of structures is crucial, highlighting the importance of pitch motion as an important design factor.

Suggested Citation

  • Sara Russo & Pasquale Contestabile & Andrea Bardazzi & Elisa Leone & Gregorio Iglesias & Giuseppe R. Tomasicchio & Diego Vicinanza, 2021. "Dynamic Loads and Response of a Spar Buoy Wind Turbine with Pitch-Controlled Rotating Blades: An Experimental Study," Energies, MDPI, vol. 14(12), pages 1-21, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:12:p:3598-:d:576468
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    References listed on IDEAS

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    1. Wen, Yi & Kamranzad, Bahareh & Lin, Pengzhi, 2021. "Assessment of long-term offshore wind energy potential in the south and southeast coasts of China based on a 55-year dataset," Energy, Elsevier, vol. 224(C).
    2. Tomasicchio, Giuseppe Roberto & D'Alessandro, Felice & Avossa, Alberto Maria & Riefolo, Luigia & Musci, Elena & Ricciardelli, Francesco & Vicinanza, Diego, 2018. "Experimental modelling of the dynamic behaviour of a spar buoy wind turbine," Renewable Energy, Elsevier, vol. 127(C), pages 412-432.
    3. Bento, Nuno & Fontes, Margarida, 2019. "Emergence of floating offshore wind energy: Technology and industry," Renewable and Sustainable Energy Reviews, Elsevier, vol. 99(C), pages 66-82.
    4. Michael Borg & Morten Walkusch Jensen & Scott Urquhart & Morten Thøtt Andersen & Jonas Bjerg Thomsen & Henrik Stiesdal, 2020. "Technical Definition of the TetraSpar Demonstrator Floating Wind Turbine Foundation," Energies, MDPI, vol. 13(18), pages 1-11, September.
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    Cited by:

    1. Lixun Zhu & Chao Ma & Wei Li, 2022. "A Novel Structure of Electromagnetic Lead Screw for Wave Energy Converter," Energies, MDPI, vol. 15(8), pages 1-12, April.

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