Journal
MECHANISM AND MACHINE THEORY
Volume 46, Issue 10, Pages 1411-1424Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechmachtheory.2011.05.012
Keywords
Gyroscope; Wave energy converter; Ocean energy; Wave power; AQWA; Hydrodynamics
Categories
Funding
- S.PO.S.DE.T. - Self Powered floating device for Sea traffic Detection and Transmission
- Italian national funding P.R.I.N. Progettazione Meccanica di un Convertitore di Energia da Moto Ondoso
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In the past four decades, hundreds of Wave Energy Converters (WECs) have been proposed and studied, but so far a final architecture to harvest wave power has not been identified. Many engineering problems are still to be solved, like survivability, durability and effective power capture in a variable wave climate. ISWEC (Inertial Sea Wave Energy Converter) is a system using the gyroscopic reactions provided from a spinning flywheel to extract power. The flywheel works inside a sealed floating body in order to be protected from the outer environment and grant a reliable and durable operation. The article summarizes the design procedure of a 1: 45 scaled ISWEC device with rated power 2.2 W and the tank tests performed with a simplified plain float to verify the actual prototype power capabilities. The article then focuses on the implementation of a non-linear coupled model (mechanics + hydrodynamics) to improve the float shape in order to maximize the power absorption. The final result is a float shape capable to absorb a power almost three times bigger (5.96 W) than the initial float shape. (C) 2011 Elsevier Ltd. All rights reserved.
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