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Publications
Sinha, A., Karmakar, D. and Guedes Soares, C. (2016), “Shallow water effects on a hydraulic power take-off WEC with reactive control”, 8th Offshore Wind and other marine renewable Energies in Mediterranean and European Seas (OWEMES 2015), 7-9 October, Rome, Italy.
In this paper, the effect of water depth on the power absorption by a hydraulic power take-off single point absorber WEC is analysed. The wave energy flux for changing water depths is presented and the study is carried out at a location in the north-west coast of Portugal, favourable for wave energy generation. The study is based on a procedure to modify the wave spectrum as the water depth reduces, namely the TMA spectrum. The present study deals with the effect of water depth on the spectral shape and significant wave heights. The reactive control strategy, which includes an external damping coefficient and a negative spring term, is used to maximise power absorption with limitations on PTO force and bandwidth. The presented work can be used for making decisions regarding the best water depth for the installation of point absorber wave energy converters in the Portuguese nearshore.
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