The authors would like to add the following note to Figure 7 of their paper published in Energies [1]. Figure 7 and the ensuing comments (part of the text following that figure) is not original, but has previously appeared in archival publications, including [2]. The manuscript will be updated, and the original one will remain available on the article webpage, with reference to this Addendum. This aspect does not affect the scientific results of the review paper.
References
- Maria-Arenas, A.; Garrido, A.J.; Rusu, E.; Garrido, I. Control Strategies Applied to Wave Energy Converters: State of the Art. Energies 2019, 12, 3115. [Google Scholar] [CrossRef]
- Ringwood, J.V. Control techniques for ocean energy applications, Electrical Issues in Ocean Energy (Edited by R. Alcorn and D. O’Sullivan), IET, 2013. Available online: http://mural.maynoothuniversity.ie/6798/ (accessed on 27 February 2020).
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