Buoy and Generator Interaction with Ocean Waves: Studies of a Wave Energy Conversion System

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Lindroth [formerly Tyrberg], Simon,1979-Uppsala universitet,Elektricitetslära (författare)

Buoy and Generator Interaction with Ocean Waves : Studies of a Wave Energy Conversion System

BokEngelska2011

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Uppsala :Acta Universitatis Upsaliensis,2011
52 s.
electronicrdacarrier

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LIBRIS-ID:oai:DiVA.org:uu-160085
ISBN:9789155481926
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-160085URI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:dok swepub-publicationtype

Serie

Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology,1651-6214 ;872

Anmärkningar

On March 13th, 2006, the Division of Electricity at Uppsala University deployed its first wave energy converter, L1, in the ocean southwest of Lysekil. L1 consisted of a buoy at the surface, connected through a line to a linear generator on the seabed. Since the deployment, continuous investigations of how L1 works in the waves have been conducted, and several additional wave energy converters have been deployed. This thesis is based on ten publications, which focus on different aspects of the interaction between wave, buoy, and generator. In order to evaluate different measurement systems, the motion of the buoy was measured optically and using accelerometers, and compared to measurements of the motion of the movable part of the generator - the translator. These measurements were found to correlate well. Simulations of buoy and translator motion were found to match the measured values. The variation of performance of L1 with changing water levels, wave heights, and spectral shapes was also investigated. Performance is here defined as the ratio of absorbed power to incoming power. It was found that the performance decreases for large wave heights. This is in accordance with the theoretical predictions, since the area for which the stator and the translator overlap decreases for large translator motions. Shifting water levels were predicted to have the same effect, but this could not be seen as clearly. The width of the wave energy spectrum has been proposed by some as a factor that also affects the performance of a wave energy converter, for a set wave height and period. Therefore the relation between performance and several different parameters for spectral width was investigated. It was found that some of the parameters were in fact correlated to performance, but that the correlation was not very strong. As a background on ocean measurements in wave energy, a thorough literature review was conducted. It turns out that the Lysekil project is one of quite few projects that have published descriptions of on-site wave energy measurements.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Maskinteknik Energiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Energy Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Naturresursteknik Marin teknik hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Marine Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Naturresursteknik Energisystem hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Energy Systems hsv//eng
TEKNIK OCH TEKNOLOGIER Naturresursteknik Havs- och vattendragsteknik hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Ocean and River Engineering hsv//eng
Wave power
Measurement systems
Marine technology
Energy conversion
Renewable energy
Energy absorption
Wave resource
Oceanic engineering
Linear generators
Point absorbers
Sea trials
Camera systems
Accelerometers
Offshore experiments
Engineering Science with specialization in Science of Electricity
Teknisk fysik med inriktning mot elektricitetslära

Biuppslag (personer, institutioner, konferenser, titlar ...)

Leijon, MatsUppsala universitet,Elektricitetslära (preses)
Holmes, BrianHydraulics Maritime Research Center, University College Cork, Ireland (opponent)
Uppsala universitetElektricitetslära (creator_code:org_t)

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Av författaren/redakt...: Lindroth [former ...; Leijon, Mats; Holmes, Brian

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Energiteknik

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Naturresurstekni ...; och Marin teknik

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Naturresurstekni ...; och Energisystem

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Naturresurstekni ...; och Havs och vattend ...

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Av lärosätet: Uppsala universitet

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