A hybrid wind-wave floating platform to ensure a minimum power base load

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Arredondo-Galeana, Abel and Scarlett, Gabriel Thomas and Collu, Maurizio and Brennan, Feargal (2025) A hybrid wind-wave floating platform to ensure a minimum power base load. Other. engrXiv, Menomonie, WI. (https://doi.org/10.31224/4553)

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Abstract

We develop a novel hybrid wind and wave floating platform for applications that require a minimum power baseload for continuous operation. The hybrid platform consists of three very large pontoons connected with mechanical hinges. The downstream pontoon carries a 5 MW wind turbine on deck. Wave energy is extracted trough hinge motion. By computing numerically a power matrix for wave energy conversion, and assuming mean power production for the wind turbine, we evaluate the performance of the hybrid platform. Performance is gauged by determining periods of time when the hybrid platform meets a minimum wave power threshold, in periods of time of absent wind power. The platform is assessed in three locations with different wind-wave correlation characteristics: One off the coast of Spain, one on the West and one on the East coast of Scotland. Although the platform reduces wind power downtime in the three locations, it is found that it has better performance in locations with high wave power density and low to intermediate wind-wave correlation indices. The hybrid platform proposed in this work is enticing for offshore applications that run in steady state. For example, hydrogen electrolysers, which require a minimum power supply for lasting operation.

ORCID iDs

Arredondo-Galeana, Abel ORCID logoORCID: https://orcid.org/0000-0002-2408-7062, Scarlett, Gabriel Thomas, Collu, Maurizio ORCID logoORCID: https://orcid.org/0000-0001-7692-4988 and Brennan, Feargal ORCID logoORCID: https://orcid.org/0000-0003-0952-6167;
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