A study on the effects of wave spectra on wave energy conversions

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dc.contributor.authorPrendergast, James
dc.contributor.authorLi, Mingfang
dc.contributor.authorSheng, Wanan
dc.contributor.funderChina Scholarship Councilen
dc.contributor.funderHubei Provincial Department of Educationen
dc.contributor.funderWuhan University of Science and Technologyen
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2018-12-12T13:01:17Z
dc.date.available2018-12-12T13:01:17Z
dc.date.issued2018
dc.date.updated2018-12-12T12:46:59Z
dc.description.abstractThis research work presents an investigation into the effects of wave spectra on energy conversion for wave energy converters and shows it may be important what theoretical spectrum should be used for a better assessment of a wave energy converter (WEC) in the given sea conditions in a proposed deployment site. To illustrate the problem and the solution, a slightly modified Reference Model 3 (RM3) self-referencing floating point absorber device is used for examining the effects of spectrum types on wave energy conversion. The compared wave spectra include the most used theoretical wave spectra, such as the standard JONSWAP and Bretschneider spectra, as well as the real sea spectrum from field measurements. From the analysis it is shown that the modified RM3 WEC extracts a similar amount of energy from the recorded sea conditions (measured at the AMETS site 2010) when the device is optimized to both the Bretschneider spectrum and the real sea spectrum while the use of the JONSWAP spectrum for optimization leads to an over-prediction in the annual energy production of 16.5%. This may be because, in many practical applications for wave energy development, the JONSWAP spectrum is often preferred by the developers for assessing the device power performance. However, the use of the narrower JONSWAP spectrum (compared to the Bretschneider spectrum) may lead to inaccurate optimization results and power performance data for the device. Therefore, using the correct wave spectrum shapes in the assessment and optimization of a device is suggested for a more accurate assessment and a better understanding of the overall power performance of the device.en
dc.description.sponsorshipChina Scholarship Council (CSC 201608420160); Hubei Provincial Department of Education (Q20171110); Hubei Province Key Laboratory of Systems Science in Metallurgical Process (Wuhan University of Science and Technology, Z201503);en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationPrendergast, J., Li, M. and Sheng, W. (2018) 'A Study on the Effects of Wave Spectra on Wave Energy Conversions', IEEE Journal of Oceanic Engineering, In Press, (13 pp). doi: 10.1109/JOE.2018.2869636en
dc.identifier.doi10.1109/JOE.2018.2869636
dc.identifier.endpage13en
dc.identifier.issn0364-9059
dc.identifier.journaltitleIEEE Journal Of Oceanic Engineeringen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/7204
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2302/IE/Marine Renewable Energy Ireland (MaREI) - The SFI Centre for Marine Renewable Energy Research/en
dc.relation.urihttps://ieeexplore.ieee.org/document/8488539
dc.rights© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en
dc.subjectSea measurementsen
dc.subjectEnergy conversionen
dc.subjectOptimizationen
dc.subjectMeteorologyen
dc.subjectEnergy measurementen
dc.subjectPerformance evaluationen
dc.subjectOceansen
dc.subjectAnnual energy production (AEP)en
dc.subjectPower performanceen
dc.subjectWave climateen
dc.subjectWave energy conversionen
dc.titleA study on the effects of wave spectra on wave energy conversionsen
dc.typeArticle (peer-reviewed)en
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