Experimental Implementation and Validation of a Broadband LTI Energy-Maximizing Control Strategy for the Wavestar Device
| Autor: | Christian Windt, Demián García-Violini, Francesco Ferri, John V. Ringwood, Yerai Peña-Sanchez, Nicolás Faedo |
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| Rok vydání: | 2021 |
| Předmět: |
Computer simulation
Computer science Linear system System identification Internal model 02 engineering and technology Kalman filter Experimental tests 01 natural sciences 010305 fluids & plasmas impedance-matching optimal control 020303 mechanical engineering & transports 0203 mechanical engineering Control and Systems Engineering Control theory linear time-invariant (LTI) 0103 physical sciences Parametric model Electrical and Electronic Engineering wave energy Parametric statistics |
| Zdroj: | Garcia-Violini, D, Pena-Sanchez, Y, Faedo, N, Windt, C, Ferri, F & Ringwood, J V 2021, ' Experimental Implementation and Validation of a Broadband LTI Energy-Maximizing Control Strategy for the Wavestar Device ', IEEE Transactions on Control Systems Technology, vol. 29, no. 6, 9339866, pp. 2609-2621 . https://doi.org/10.1109/TCST.2021.3052479 |
| ISSN: | 2374-0159 1063-6536 |
| Popis: | This study addresses the experimental validation of a linear time-invariant (LTI) energy-maximizing control strategy for wave energy converters (WECs), applied to a 1/20 scale Wavestar WEC. To fulfill this objective, system identification routines are utilized to compute a mathematical (parametric) model of the input-output dynamics of the device, suitable for control design and implementation. With this parametric model, the so-called LiTe-Con energy-maximizing strategy, recently published in the literature, is designed, synthesized, and tested under irregular wave excitation in the wave basin at Aalborg University. Given that the LiTe-Con requires instantaneous knowledge of the wave excitation effects, estimates are provided by means of an unknown-input Kalman filter, designed in close synergy with the so-called internal model principle. For the experimental assessment, both controller and estimator are directly implemented in a real-time architecture. The performance of the LiTe-Con is evaluated in terms of energy-absorption, showing consistent results with respect to those obtained in numerical simulation, hence validating the LiTe-Con controller in a realistic real-time scenario. |
| Databáze: | OpenAIRE |
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