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Sea level variability in the Swedish Exclusive Economic Zone and adjacent seawaters: influence on a point absorbing wave energy converter
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.ORCID iD: 0000-0003-3928-3485
2019 (English)In: Ocean Science, ISSN 1812-0784, E-ISSN 1812-0792, Vol. 15, p. 1517-1529Article in journal (Refereed) Published
Abstract [en]

Low-frequency sea level variability can be a critical factor for several wave energy converter (WEC) systems, for instance, linear systems with a limited stroke length. Consequently, when investigating suitable areas for deployment of those WEC systems, sea level variability should be taken into account. In order to facilitate wave energy developers finding the most suitable areas for wave energy park installations, this paper describes a study that gives them additional information by exploring the annual and monthly variability of the sea level in the Baltic Sea and adjacent seawaters, with a focus on the Swedish Exclusive Economic Zone. Overall, 10 years of reanalysis data from the Copernicus project have been used to conduct this investigation. The results are presented by means of maps showing the maximum range and the standard deviation of the sea level with a horizontal spatial resolution of about 1 km. A case study illustrates how the results can be used by the WEC developers to limit the energy absorption loss of their devices due to sea level variation. Depending on the WEC technology one wants to examine, the results lead to different conclusions. For the Uppsala point absorber L12 and the sea state considered in the case study, the most suitable sites where to deploy WEC parks from a sea level variation viewpoint are found in the Gotland basins and in the Bothnian Sea, where the energy loss due to sea level variations is negligible.

Place, publisher, year, edition, pages
2019. Vol. 15, p. 1517-1529
National Category
Marine Engineering
Identifiers
URN: urn:nbn:se:uu:diva-397409DOI: 10.5194/os-15-1517-2019OAI: oai:DiVA.org:uu-397409DiVA, id: diva2:1371503
Funder
Swedish Energy Agency, 42256-1Available from: 2019-11-20 Created: 2019-11-20 Last updated: 2019-11-26Bibliographically approved

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