LTI energy-maximising control for the Wave Star wave energy converter: identification, design, and implementation. Issue 2 (2020)

• Record Type: Journal Article
• Authors: García-Violini, Demián; Peña-Sanchez, Yerai; Faedo, Nicolás; Windt, Christian; Ringwood, John V.
• Is Part Of: IFAC-PapersOnLine. Volume 53:Issue 2(2020)
• Page Start: 12313
• Page End: 12318
• Publication Date: 2020
• Subjects: Wave energy -- System Identification -- Energy Maximising Control -- Simulation; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2020.12.1193
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: Considering the Wave Star wave energy converter (WEC), which is a standard point absorber prototype, this study addresses the complete energy maximising control design procedure. The WEC model is obtained using system identification routines. Then, using the identified model, a LTI energy maximising control strategy, recently presented in the literature, is designed. Additionally, for the wave excitation force estimation, a standard Kalman filter with a harmonic oscillator is considered. Finally, for the assessment of the performance of the complete system, the controller and estimator are implemented in the numerical WEC simulation environment WEC-Sim. The system is tested under realistic conditions and satisfying performance of the LTI controller is shown. Thus, through a non-conventional approach, and considering a realistic software environment, a novel energy maximising controller is implemented, obtaining results which indicate the feasibility of the approach.