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The influence of biofouling on power capture and the fatigue life of mooring lines and power cables used in wave energy converters
RISE, SP – Sveriges Tekniska Forskningsinstitut. Chalmers University of Technology, Sweden.ORCID iD: 0000-0001-7182-0872
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
2016 (English)In: Progress in Renewable Energies Offshore - Proceedings of the 2nd International Conference on Renewable Energies Offshore (RENEW2016) / [ed] Guedes Soares, 2016, p. 711-722Conference paper, Published paper (Other academic)
Abstract [en]

This study presents an analysis of a wave energy converter (WEC) system consisting of a buoy, a mooring system and a power cable connected to a hub. The investigated WEC system is currently under full-scale testing near Runde in Norway. The purpose of the study was to investigate the characteristics of the entire system, primarily with regard to energy performance and the fatigue life of the mooring lines and power cable, considering the effects of marine biofouling and its growth on the system’s components. The energy performance of the system and the fatigue life of the mooring lines and the power cable were systematically studied via parameter variation analysis, considering different mooring configurations, biofouling conditions, and environmental loads (current and sea state conditions), among other factors. Hydrodynamic and structural response simulations were conducted in a coupled response analysis using the DNV-GL software SESAM. Energy performance analyses and stress-based rainflow counting fatigue calculations were performed separately using an in-house code. The results show that, for a WEC system which has been deployed for 25 years, biofouling can reduce the total power absorption by up to 10% and decrease the fatigue life of the mooring lines by approximately 20%.

Place, publisher, year, edition, pages
2016. p. 711-722
Keywords [en]
wave energy, biofouling, fatigue, energy performance, parametric study, mooring line
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27925ISBN: 978-1-138-62627-0 (print)OAI: oai:DiVA.org:ri-27925DiVA, id: diva2:1067367
Conference
2nd International Conference on Renewable Energies Offshore (RENEW 2016), October 24-26, 2016, Lisbon, Portugal
Available from: 2017-01-20 Created: 2017-01-20 Last updated: 2019-06-26Bibliographically approved

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CiteExportLink to record
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  • apa
  • harvard1
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  • nn-NB
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  • Other locale
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Output format
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