 Hydrodynamics and load shedding behavior of a variable-geometry oscillating surge wave energy converter (OSWEC)Michael Choiniere, Jacob Davis, Nhu Nguyen, Nathan Tom, Matthew Fowler and Krish Thiagarajan Renewable Energy, 2022, vol. 194, issue C, 875-884 Abstract: In order to improve their long-term viability, wave energy converters (WECs) need to be able to shed loads when a threshold wave condition is exceeded. As shown by Tom et al. (2016) [1], provision of adjustable flaps within the body of an oscillating surge wave energy converter (OSWEC) allows wave energy to pass through the device. A control system may then be able to open and close the flaps when waves approaching the device exceed preset thresholds. The variable-geometry OSWEC (VG-OSWEC) concept studied in this paper is a bottom-hinged, rectangular wave paddle with five flaps of elliptical cross-section embedded into the face of the paddle. System ID tests were conducted on this VG-OSWEC device at a 1:14 scale in a wave basin. Free decay tests showed that the damping was distinctly nonlinear when the flaps were fully open, and the natural frequency increased by 40% when compared with the flaps in a fully closed configuration. Keywords: Wave energy conversion; Oscillating surge wave energy converter; Wave hydrodynamics; Model tests; Response amplitude operator; Load shedding (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:194:y:2022:i:c:p:875-884 DOI: 10.1016/j.renene.2022.05.169 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
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