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Industrial realization of both floating offshore wind and wave energy technologies requires reductions in the current high levelized cost of energy. Reducing mooring fatigue loads could decrease levelized cost of energy, as mooring is expected to be a major cost of these systems. Previous work on improving mooring reliability and costs has focused on material and design. In this exploratory study, we quantify how placing WECs in front of a FOWT could reduce fatigue damage incurred by FOWT mooring cables in long-crested wave conditions. We use SWAN to quantify the WEC-induced sea state modifications and obtain wave spectra at the FOWT location. The spectra are then input into WEC-Sim and MooDy to model the mooring cable behavior. Fatigue analysis with Rainflow Counting is used to quantify the fatigue loading on the mooring cables. Results from this study show a 8% reduction in fatigue damage to mooring cables over the lifetime of the structure. These results indicate that co-location could have a beneficial effect on FOWT mooring cable fatigue. In future work, these results will be leveraged to perform optimal O&M planning and reliability-based design optimization of floating offshore wind turbines.
|Title of host publication
|ASME 2018 1st International Offshore Wind Technical Conference
|Number of pages
|American Society of Mechanical Engineers
|Published - 2018
|ASME 2018 1st International Offshore Wind Technical Conference, IOWTC 2018 - San Francisco, United States
Duration: 4 Nov 2018 → 7 Nov 2018
|ASME 2018 1st International Offshore Wind Technical Conference, IOWTC 2018
|04/11/2018 → 07/11/2018
|Ocean, Offshore and Arctic Engineering Division
- Fatigue damage
- Offshore wind turbines
- Wind waves
FingerprintDive into the research topics of 'Effects of Co-located Floating Wind-Wave Systems on Fatigue Damage of Floating Offshore Wind Turbine Mooring Cables'. Together they form a unique fingerprint.
- 1 Finished
MoWE: MoWE - Mooring of floating wave energy converters:numerical simulation and uncertainty quantification
Moura Paredes, G. & Eskilsson, C.
01/10/2017 → 30/09/2019