Monopile-mounted wave energy converter for a hybrid wind-wave system

Loading...
Thumbnail Image
Files
10899_ECM-D-19-03805R2_AAM.pdf(1.61 MB)
Accepted version
Date
2019-08-28
Authors
Perez-Collazo, C.
Pemberton, R.
Greaves, D.
Iglesias, Gregorio
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Research Projects
Organizational Units
Journal Issue
Abstract
Multipurpose platforms are innovative solutions to combine the sustainable exploitation of multiple marine resources. Among them, hybrid wind-wave systems stand out due to the multiple synergies between these two forms of marine renewable energy. The objective of this work is to develop a hybrid system for monopile substructures, which are currently the prevailing type of substructure for offshore wind turbines, and more specifically to focus on the wave energy converter sub-system, which consists in an oscillating water column. For this purpose, an in-depth experimental campaign was carried out using a 1:40 scale model of the wave energy converter sub-system and the monopile substructure, considering regular and irregular waves. Based on the experimental results the performance of the device and its interaction with the wave field were characterised â a fundamental step to fully understand the benefits and limitations of this hybrid wind-wave system, which sets the basis for its future development. Regarding the performance, the best efficiency was obtained with the turbine damping corresponding to a 0.5% orifice size, and two resonance peaks were identified (T = 9 and 6 s). As for the interaction of the hybrid system with the wave field, between 5% and 66% of the incident wave power is reflected and between 3% and 45%, transmitted. The wave period was found to be the parameter that most influenced wave run-up on the substructure. This characterisation of the behaviour of the hybrid system shows that it is indeed a promising option for further development.
Description
Keywords
Hybrid wind-wave , OWC , Physical modelling , Wave energy, Offshore Wind , Wave energy , Offshore wind
Citation
Perez-Collazo, C., Pemberton, R., Greaves, D. and Iglesias, G. (2019) 'Monopile-mounted wave energy converter for a hybrid wind-wave system', Energy Conversion and Management, 199, 111971 (13 pp). doi: 10.1016/j.enconman.2019.111971