|Comparison of mooring solutions and array systems for point absorbing wave energy devices
|Digital arithmetic;Life cycle;Mooring;Mooring cables;Ocean engineering;Oceanography;Offshore oil well production;Systems engineering;Wave energy conversion;Array systems;Coupled analysis;Floating points;Levelised cost of energies;Life cycle analysis;Structure response;Technical development;Wave energy;Arctic engineering
|Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Most of the ocean energy technologies are considered to be ina pre-commercial phase and need technical development. Thisstudy focuses on design of mooring solutions and comparesarray systems of a specific floating point-absorbing waveenergy converter (WEC) developed by the companyWaves4Power. A full-scale prototype of the WEC is installedin Runde (Norway) where it is moored with three polyestermooring lines, each having one floater and one gravity anchor.Based on this reference installation, the method of systemsengineering was used to propose twenty-two conceptualmooring solutions for different array systems. They werecompared and reduced to four top concepts in a systematicelimination procedure using Pugh and Kesselring matrices. Thetop concepts were assessed in detail by means of LCOE(levelised cost of energy), LCA (life cycle analysis) and riskanalyses. The fatigue life of the mooring lines and the energycapture were calculated using results obtained from coupledhydrodynamic and structure response analyses in the DNV-GLDeepC software. Two final concepts were proposed for thewater depths 75 and 200 m. ? 2018 ASME.
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