Comparison of mooring solutions and array systems for point absorbing wave energy devices
Journal
Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Journal Volume
11A
Date Issued
2018
Author(s)
Abstract
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.
Subjects
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
SDGs
Type
conference paper