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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”, Ocean Engineering, Vol. 122, pp. 293-310
The effect of water depth on the power absorption by a single heaving point absorber wave energy converter, attached
to a hydraulic power take-off system, is simulated and analysed. The wave energy flux for changing water depths is
presented and the study is carried out at a location in the north-west Portuguese coast, favourable for wave power
generation. This analysis is based on a procedure to modify the wave spectrum as the water depth reduces, namely,
the TMA spectrum (Transformation 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 maximize power absorption by the wave energy converter. 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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