García-Violini, Demián and Peña-Sanchez, Yerai and Faedo, Nicolás and Ferri, Francesco and Ringwood, John V. (2023) A Broadband Time-Varying Energy Maximising Control for Wave Energy Systems (LiTe-Con+): Framework and Experimental Assessment. IEEE Transactions on Sustainable Energy, 14 (3). pp. 1516-1525. ISSN 1949-3029

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Abstract

Motion of wave energy converters (WECs) is usually exaggerated as a consequence of the application of control strategies for energy absorption maximisation. With the aim of preserving the physical integrity of the devices, constraint handling mechanisms, as part of the underlying control strategies, are considered a key component. Recent developments in wave energy control include a linear time-invariant-based controller presented in the literature as LiTe-Con, which provides a simple constraint handling mechanism. However, this handling method can lead to conservative performance in certain scenarios. To overcome such limitations, this study presents a time-varying methodology for an online adaptation of the constraint handling mechanism in LiTe-Con, while preserving its original simplicity and efficiency. Experimental assessment of the presented control methodology is provided in this study, using a broad range of operating conditions. Results show that the presented control strategy (LiTe-Con+) exceeds the performance achievable with the original LiTe-Con. Additionally, the benefits of LiTe-Con+, such as low computational demand, technical versatility, and impressive performance level are highlighted.

Item Type:	Article
Keywords:	Wave energy; optimal control; impedance matching; linear time invariant;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering
Item ID:	18727
Identification Number:	https://doi.org/10.1109/TSTE.2023.3237023
Depositing User:	Professor John Ringwood
Date Deposited:	11 Jul 2024 14:01
Journal or Publication Title:	IEEE Transactions on Sustainable Energy
Publisher:	IEEE
Refereed:	Yes
URI:	Publisher
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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