Journal
RENEWABLE ENERGY
Volume 78, Issue -, Pages 322-333Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2015.01.020
Keywords
Adaptability; Tuning; Wave energy converter; Resonance; Capture width ratio
Funding
- University of Cantabria's PhD Scholarship Program
- MERMAID Project - European Commission
- VAPEO Project - Spanish Ministry of Economics and Competitiveness [ENE2013-48716-R]
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This study evaluates the influence of wave climate tunability on the performance of a generic Wave Energy Converter (WEC) for different climate scenarios. The generic WEC is assumed to be composed of an array of heaving, floating cylinders. In this study, two natural periods for the cylinders of 4 s and 8 s (typical of enclosed seas and the mean Atlantic swell, respectively) and a location-tunable cylinder are considered to evaluate the influence of tuning on the power performance of the cylinder. The WEC power matrix is computed using a frequency domain model, and the performance of the WEC is evaluated along the global coasts; the met-ocean data originated from the global reanalysis database (GOW) from Reguero et al. (2012). The performance of the WEC is evaluated using two parameters: the capture width ratio (CWR), which evaluates the efficiency of the converter at each location, and the kW/Ton (KWT) parameter, which evaluates the efficiency of the converter using economic terms. Tuning a converter for each location displayed a positive CWR; however, the MT was low after WEC tuning because of the weight of the structures required to tune the converter that experiences high peak periods. (C) 2015 Elsevier Ltd. All rights reserved.
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