Fusco, Francesco and Ringwood, John (2011) A Model for the Sensitivity of Non-Causal Control of Wave Energy Converters to Wave Excitation Force Prediction Errors. Proceedings of the 9th European Wave and Tidal Energy Conference (EWTEC).
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Abstract
Wave Energy Converters (WECs) consisting of oscillating
bodies can gain significant benefit from a real-time
controller that is able to appropriately tune the system operation
to the incident wave, thus allowing for a higher energy capture
in a wider variety of wave conditions. Some of the proposed
controllers, however, are non-causal and need predictions of the
excitation force to be implemented in practise. A frequencydomain
model is proposed, for the estimation of the effects that
the wave- excitation-force prediction error has on the reference
velocity that is calculated from the non-causal control law and,
ultimately, on the absorbed power. The model can easily be
derived exclusively from the predictor and from the non-causal
law, with no additional information about the excitation force.
Such a frequency-domain model can be valuable for the design
of a robust control architecture, where the prediction error
has a limited effect on the performance (power absorption).
Focus is put on reactive control, but it is shown how the
proposed sensitivity model can be generalised to other non-causal
strategies, such as model predictive control.
Item Type: | Article |
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Keywords: | wave energy converter; control; wave forecasting; |
Academic Unit: | Faculty of Science and Engineering > Electronic Engineering Faculty of Science and Engineering > Research Institutes > Centre for Ocean Energy Research |
Item ID: | 3551 |
Depositing User: | Professor John Ringwood |
Date Deposited: | 30 Mar 2012 09:38 |
Journal or Publication Title: | Proceedings of the 9th European Wave and Tidal Energy Conference (EWTEC) |
Publisher: | School of Civil Engineering and the Environment, University of Southampton |
Refereed: | Yes |
Related URLs: | |
URI: | https://mu.eprints-hosting.org/id/eprint/3551 |
Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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