Study of the operation characteristics of a point absorbing direct driven permanent magnet linear generator deployed in the Baltic Sea

To experimentally study how a wave energy converter (WEC) behaves when parameters such as weight on the translator and buoy volume are changing is of significant importance when trying to optimise the WEC system. This study presents results from a WEC deployed at the Baltic Sea near the island of Åland. Compared with earlier experiments, the weight on the translator has been significantly increased to suit the buoy volume. Experimental results show that the power output between the upward and the downward motions are comparable up to the maximum speed for the downward motion of the translator. To study the speed of the translator in downward direction a model has been derived. The model has also been used to study the impact of having a changing active area. Moreover, finite element (FE) simulations done on the generator have been compared with experimental data and show a good agreement, but at high speeds of the translator the FE simulations start to deviate from the experiments.

TEKNIK OCH TEKNOLOGIER Naturresursteknik Havs- och vattendragsteknik hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Ocean and River Engineering hsv//eng
Finite element method
Hydroelectric generators
Permanent magnets
Wave energy conversion Direct-driven
FE-simulation
Finite element simulations
Maximum speed
Operation characteristic
Permanent-magnet linear generators
Power out put
Wave energy converters

Strömstedt, ErlandUppsala universitet,Elektricitetslära(Swepub:uu)erlst328 (author)
Savin, AndrejUppsala universitet,Elektricitetslära(Swepub:uu)andsa433 (author)
Boström, CeciliaUppsala universitet,Elektricitetslära(Swepub:uu)cecbo439 (author)
Leijon, MatsUppsala universitet,Elektricitetslära(Swepub:uu)malei676 (author)
Uppsala universitetElektricitetslära (creator_code:org_t)

In:IET Renewable Power Generation: Institution of Engineering and Technology (IET)10:8, s. 1204-12101752-14161752-1424

By the author/editor: Lejerskog, Erik, ...; Strömstedt, Erla ...; Savin, Andrej; Boström, Cecilia; Leijon, Mats

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Environmental En ...; and Ocean and River ...

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