| 1. |
- Göteman, Malin, 1980-, et al.
(författare)
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Optimizing wave energy parks with over 1000 interacting point-absorbers using an approximate analytical method
- 2015
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Ingår i: International Journal of Marine Energy. - : Elsevier BV. - 2214-1669. ; 10, s. 113-126
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Tidskriftsartikel (refereegranskat)abstract
- Large arrays of wave energy converters of point-absorber type are studied using an approximate analytical model. The model is validated against a numerical method that takes into account full hydrodynamic interactions based on linear potential flow theory. The low computational cost of the analytical model enables parameter studies of parks in the MW range and includes up to over 1000 interacting devices. The model is actuated by irregular wave data obtained at the Swedish west coast. In particular, focus is on comparing park geometries and improving park configurations to minimize the power fluctuations.
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| 2. |
- Isberg, Jan, 1964-, et al.
(författare)
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Control of rapid phase oscillations in the modelling of large wave energy arrays
- 2015
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Ingår i: International Journal of Marine Energy. - : Elsevier. - 2214-1669. ; 11, s. 1-8
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Tidskriftsartikel (refereegranskat)abstract
- Several recently developed concepts for economically viable conversion of ocean wave energy are based on large arrays of point absorbers. Simulations of the hydrodynamic interactions between devices in wave energy parks provide guidelines for optimal configurations with regard to maximizing produced electricity while minimizing fluctuations and costs. Parameters that influence the performance include the geometrical lay-out of the park, the number of wave energy converters and their dimensions and separating distance, as well as the wave climate and the incoming wave spectral characteristics. However, the complexity of the simulations increases rapidly with growing number of interacting units, and simulations become a severe challenge that calls for new methods. Here we address the problem of rapid phase oscillations appearing in the simulation of large arrays of point absorbers using potential theory for the structure–fluid interaction. We do this by analytically integrating out the factors that are causing the oscillations. Our group has successfully utilized this method to model parks with up to 1000 point absorbers.
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| 3. |
- Simas, Teresa, et al.
(författare)
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Review of consenting processes for ocean energy in selected European Union Member States
- 2015
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Ingår i: International Journal of Marine Energy. - : Elsevier BV. - 2214-1669. ; 9, s. 41-59
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Tidskriftsartikel (refereegranskat)abstract
- Abstract Consenting is still generally regarded as a non-technological barrier to the progress of the marine renewable energy industry, caused by the complexity of consenting processes and the lack of dedicated legal frameworks. Existing consenting systems for ocean energy projects tend to be based on procedures designed for other sectors and are seen as inappropriate for the specific needs of ocean energy. Licensing procedures are also viewed by developers as time-consuming because regulators see ocean energy as a new activity with unknown or uncertain effects and consequently often apply strong interpretation of the precautionary principle. Consenting processes for ocean energy are, nevertheless, evolving throughout Europe, driven by national and European policies and incentives on renewables, changing legal and administrative frameworks to facilitate development and more integrated marine governance. This review compares the consenting processes for ocean energy in different European countries, focusing on aspects thought to hamper operation of the process. It shows that different systems of governance across the EU Member States have resulted in diversity in the design of consenting processes, though common features can also be identified. This evidence-based review enables suggestions for streamlining consenting processes for wave energy.
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