Open AccessShallow water effects on wave energy converters with hydraulic power take-off system
Author(s) -
Ashank Sinha,
D. Karmakar,
C. Guedes Soares
Publication year - 2016
Publication title -
the international journal of ocean and climate systems
Language(s) - English
Resource type - Journals
eISSN - 1759-314X
pISSN - 1759-3131
DOI - 10.1177/1759313116649966
Subject(s) - wave power , wind wave , wave energy converter , power (physics) , acoustics , wave shoaling , energy (signal processing) , energy transformation , marine engineering , electricity generation , environmental science , absorption (acoustics) , geology , engineering , physics , optics , wave propagation , longitudinal wave , mechanical wave , oceanography , quantum mechanics , thermodynamics
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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