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    Modelling of a vibro-impact power take-off mechanism for wave energy conversion


    Guo, Bingyong and Ringwood, John (2020) Modelling of a vibro-impact power take-off mechanism for wave energy conversion. In: 2020 European Control Conference (ECC), 12-15 May 2020, Saint Petersburg, Russia.

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    Abstract

    Ocean wave spectra are broad-banded, while wave energy conversion systems are designed to harvest energy efficiently within a narrow frequency range, resulting in low overall power capture efficiency. This paper aims to introduce a nonlinear vibro-impact power take-off (PTO) mechanism for a heaving point absorber, in order to broaden its power capture bandwidth and provide end-stop function. A mathematical model of the vibro-impact mechanism is derived, and numerical simulations are conducted under regular wave conditions, to investigate the effect of the vibro-impact mechanism on the system performance. Numerical results illustrate that the heaving point absorber with the vibro-impact PTO system exhibits a characteristics of band-pass effect, and the nonlinear vibro-impact mechanism has the potential to broaden power capture bandwidth, achieve end-stop function, and attenuate peak-to-average power ratio.

    Item Type: Conference or Workshop Item (Paper)
    Additional Information: Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 841388. This paper reflects only the authors’ view and that the Agency is not responsible for any use that may be made of the information it contains.
    Keywords: Modelling; vibro-impact; power; take-off; mechanism; wave energy; conversion;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Faculty of Science and Engineering > Research Institutes > Centre for Ocean Energy Research
    Item ID: 14330
    Depositing User: Professor John Ringwood
    Date Deposited: 13 Apr 2021 14:48
    Refereed: Yes
    Funders: European Union Horizon 2020 programme
    URI:

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