Optimisation of wave energy extraction with the Archimedes Wave Swing

✍ Scribed by Duarte Valério; Pedro Beirão; José Sá da Costa

• Book ID: 104072223
• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 638 KB
• Volume: 34
• Category: Article
• ISSN: 0029-8018
• DOI: 10.1016/j.oceaneng.2007.05.009

✦ Synopsis

This paper addresses the Archimedes Wave Swing (an offshore wave energy converter, which produces electricity from sea waves). It compares the performances of latching control (a discrete, highly non-linear, intrinsically sub-optimum control strategy), of reactive control, of phase and amplitude control (two optimum control strategies that involve non-causal transfer functions, which have to be implemented with approximations, thus rending the control sub-optimum), and of feedback linearisation control (a non-linear control strategy). From extensive simulations it is concluded that the latter performs clearly better irrespective of the sea state, and leads to a significant increase of absorbed wave power.