Mechanical design and simulation of an onshore four-bar wave energy converter

The paper presents the design of an onshore Wave Energy Converter (WEC) named ALETTONE (At Least Energy Thanks To Neptune), which is characterized by a low cost mechanical architecture based on a four-bar linkage with mobility in a vertical plane. The lower link is a floating rocker arm moved by the hydrostatic and hydrodynamic forces exerted by the sea water, whereas the upper rocker arm is connected to a rotating electric generator via a transmission composed of either a single or a pair of one-way clutches coupled to a speed multiplier gearbox. Due to its simplicity, this WEC concept seems to be an interesting solution for energy generation in isolated locations. After a description of the overall design, the dynamic model of the system is presented, along with simulation results in case of monochromatic and panchromatic waves.

[1]  Alan Henry,et al.  Design of the Next Generation of the Oyster Wave Energy Converter , 2010 .

[2]  Julia Fernandez Chozas,et al.  Introduction Of Wavestar Wave Energy Converters At The Danish Offshore Wind Power Plant Horns Rev 2 , 2012 .

[3]  Henk Polinder,et al.  Design, modelling and test results of the AWS PM linear generator , 2005 .

[4]  M. N. Sahinkaya,et al.  A review of wave energy converter technology , 2009 .

[5]  H. Dresig,et al.  Dynamics of Machinery: Theory and Applications , 2010 .

[6]  Jon Andreu,et al.  Review of wave energy technologies and the necessary power-equipment , 2013 .

[7]  Philipp R. Thies,et al.  Is it a showstopper? Reliability assessment and criticality analysis for Wave Energy Converters , 2009 .

[8]  Nicholas Jenkins,et al.  Optimisation of a clutch-rectified power take off system for a heaving wave energy device in irregular waves with experimental comparison , 2014 .

[9]  Domenico P. Coiro,et al.  Wave energy conversion through a point pivoted absorber: Numerical and experimental tests on a scaled model , 2016 .

[10]  Kevin Russell,et al.  Kinematics and Dynamics of Mechanical Systems: Implementation in MATLAB® and SimMechanics® , 2015 .

[11]  Rocco Vertechy,et al.  Model-based design and optimization of a dielectric elastomer power take-off for oscillating wave surge energy converters , 2015 .

[12]  J. H. Nath,et al.  Probability Distributions of Breaking Wave Heights Emphasizing the Utilization of the JONSWAP Spectrum , 1976 .

[13]  A. Benalia,et al.  Ocean wave converters: State of the art and current status , 2010, 2010 IEEE International Energy Conference.

[14]  Johannes Falnes,et al.  A REVIEW OF WAVE-ENERGY EXTRACTION , 2007 .

[15]  Enrique Vidal,et al.  Discrete Displacement Hydraulic Power Take-Off System for the Wavestar Wave Energy Converter , 2013 .

[16]  Ross Henderson,et al.  Design, simulation, and testing of a novel hydraulic power take-off system for the Pelamis wave energy converter , 2006 .

[17]  Roger Dettmer.  Push and pull , 2009 .

[18]  Luís M.C. Gato,et al.  Analysis of Wells turbine design parameters by numerical simulation of the OWC performance , 2002 .

[19]  Luís M.C. Gato,et al.  On the Theory of the Wells Turbine , 1984 .

[20]  R. H. Hansen.  Design and Control of the PowerTake-Off System for a Wave Energy Converter with Multiple Absorbers , 2013 .

[21]  A. Clément,et al.  Wave energy in Europe: current status and perspectives , 2002 .

[22]  H. Polinder,et al.  Linear PM Generator system for wave energy conversion in the AWS , 2004, IEEE Transactions on Energy Conversion.

[23]  António F.O. Falcão,et al.  Wave energy utilization: A review of the technologies , 2010 .

[24]  Andreas Uihlein,et al.  Wave and tidal current energy – A review of the current state of research beyond technology , 2016 .

[25]  Peter Frigaard,et al.  Wavestar Energy Production Outlook , 2016 .

[26]  Giovanni Berselli.  Modeling and Simulation of an Inertia-Type Infinitely Variable Transmission , 2010 .

[27]  M. Folley.  Numerical modelling of wave energy converters , 2016 .

[28]  Tony Lewis,et al.  WAVE PERIOD RATIOS AND THE CALCULATION OF WAVE POWER , 2014 .

[29]  Trevor Whittaker,et al.  Analysis of the nearshore wave energy resource , 2009 .

[30]  A.G. Jack,et al.  Linear generators for direct-drive wave energy conversion , 2003, IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03..

[31]  Julia Fernandez Chozas,et al.  Combined Production Of A Full-Scale Wave Converter And A Full-Scale Wind Turbine: a real case study , 2012 .

[32]  Peter Frigaard,et al.  Prototype Testing of the Wave Energy Converter Wave Dragon , 2006 .