Non-linear modelling and verification of a heaving point absorber for wave energy conversion

Guo, Bingyong; Patton, Ron, 1949-; Jin, Siya; Gilbert, J. M. (James Michael); Parsons, D. R. (Daniel R.)

Point absorber modelling; Non-linear hydrodynamics; Wave tank tests; Wave energy conversion
2017

Journal article


Rights
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Abstract

Although the heaving Point Absorber (PA) concept is well known in wave energy conversion research, few studies focus on appropriate modelling of non-linear fluid viscous and mechanical friction dynamics. Even though these concepts are known to have non-linear effects on the hydrodynamic system, most research studies consider linearity as a starting point and in so doing have a weak approach to modelling the true dynamic behaviour, particularly close to resonance. The sole use of linear modelling leads to limited ability to develop control strategies capable of true power capture optimisation and suitable device operation. Based on a 1/50 scale cylindrical heaving PA, this research focuses on a strategy for hydrodynamic model development and experimental verification. In this study, nonlinear dynamics are considered, including the lumped effect of the fluid viscous and mechanical friction forces. The excellent correspondence between the derived non-linear model and wave tank tested PA behaviours provides a strong background for wave energy tuning and control system design.

Publisher
The University of Hull
Peer reviewed
Yes
Language
English
Extent
772 KB
Identifier
hull:15427

Journal

Journal title
IEEE transactions on sustainable energy
Publication date
2017
Publisher
Institute of Electrical and Electronics Engineers
DOI
10.1109/TSTE.2017.2741341
ISSN (Print)
1949-3029
Volume
9
Issue
1
Start page
453
End page
461
Notes

This is a description of an article published in IEEE transactions on sustainable energy, 2017, v.9 issue 1.

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Published article
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