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Article Efficient Power Take-Offs for Ocean Energy Conversion
Author(s) Y. Kamizuru (ICOE 2012)
Tags Efficiency, Numerical modelling
Type Papers

This paper focuses on the design and efficiency of selected transmissions for wave and tidal devices. A brief assessment of promising technologies shows the potential of hydraulic and mechanic trans-missions. A comparison between mechanic and hydraulic power take-offs highlights their efficien-cies and individual benefits. Examples for hydro-static drive trains for wave energy converters and their characteristics are described. It is shown how force control, energy storage and smoothing as well as high efficiency can be achieved. A wave-to-wire simulation taking into account the efficiency of all installed components is introduced to assess the performance. At last a test rig of a hydrostatic drive train for WEC is described and exemplary results for cylinder efficiency are presented. 

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