Abstract
Floating structures enable offshore wind power deployment at numerous deep water sites with promising wind potential where bottom-fixed systems are no longer feasible. However, the large diversity in existing floater concepts slows down the development and maturing processes of floating offshore wind turbines. Thus, in this work, different floating support structures are assessed with respect to their suitability for offshore wind farm deployment. A survey is conducted to examine the capacities of selected floater types, grouped into ten categories, with respect to ten specified criteria focusing on wind farm deployment. By this means, a multi-criteria decision analysis (MCDA) is carried out, using the technique for order preference by similarity to ideal solution (TOPSIS). With the individual scores of the different systems, considering the weighting of each criterion, suitable concepts are identified and potential hybrid designs, combining advantages of different solutions, are suggested.
Highlights
Offshore wind energy is of high importance among renewable energies; most of the sites with good wind resources are at deep water (>60 m)
With floating offshore wind turbine (FOWT) systems, deep water sites with high potential for wind energy utilisation can be deployed, making offshore wind power no longer limited to water depths up to ∼50 m
Broad range of existing floater concepts Most of the existing floating offshore wind turbine support structures can be assigned to the main categories presented in subsection 2.1
Summary
Offshore wind energy is of high importance among renewable energies; most of the sites with good wind resources are at deep water (>60 m). A set of criteria for assessing the potential of floating support structures for wind farm deployment is specified in subsection 3.2.
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