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Wave tank experiments on the power capture of a multi-axis wave energy converter

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<mark>Journal publication date</mark>09/2015
<mark>Journal</mark>Journal of Marine Science and Technology
Issue number3
Volume20
Number of pages10
Pages (from-to)520-529
Publication StatusPublished
Early online date11/02/15
<mark>Original language</mark>English

Abstract

This paper presents a new concept of multi-axis wave energy converter (WEC), which can capture wave energy from multiple directions of motion. It describes the modelling of the multi-axis WEC and presents the results of laboratory experiments on the power capture of the multi-axis WEC in a wave tank subjected to synthesized scaled sea waves. The experiments investigate the influence of parameters such as buoy structure, damping and inertia modification (ballasting) on the hydrodynamic performance. The experimental results indicate that the multi-axis WEC yields very good performance under a variety of wave conditions. It is also demonstrated that, by utilizing more than one direction of motion, the multi-axis WEC proves capable of supplying more power than a single-axis WEC. This work constitutes a preliminary step towards the development of an advanced concept of WEC.