Publication

Towards Ocean Grazer's Modular Power Take-Off System Modeling: A Port-Hamiltonian Approach

Barradas-Berglind, J. J., Muñoz Arias, M., Wei, Y., Prins, W. A., Vakis, A. I. & Jayawardhana, B. Feb-2017 Proc. 20th World Congress of the International Federation of Automatic Control. IFAC, 7 p.

Research output: Scientific - peer-reviewConference contribution

Documents

This paper presents a modular modeling framework for the Ocean Grazer's Power Take-Off (PTO) system, which operates as an array of point-absorber type devices connected to a hydraulic system. The modeling is based on the port-Hamiltonian (PH) framework that enables energy-based analysis and control of the PTO system. Firstly, a modular model of a point-absorber hydraulic system, which represents the main building block of the PTO, is presented. The model consists of wave-mechanical and hydraulic subsystems that are interconnected with a transformer-type interconnection. Secondly, we show passivity of the point-absorber hydraulic element and the accumulation of potential energy, which is due to the novel pumping mechanism of the point-absorber. Finally, we illustrate these properties through simulation results.
Original languageEnglish
Title of host publicationProc. 20th World Congress of the International Federation of Automatic Control
PublisherIFAC
Number of pages7
StateAccepted/In press - Feb-2017
Event the 20th World Congress of the International Federation of Automatic Control, taking place in Toulouse, France. - Toulouse, France

Conference

Conference the 20th World Congress of the International Federation of Automatic Control, taking place in Toulouse, France.
CountryFrance
CityToulouse
Period09/07/201714/07/2017

Event

the 20th World Congress of the International Federation of Automatic Control, taking place in Toulouse, France.

09/07/201714/07/2017

Toulouse, France

Event: Conference

    Keywords

  • ocean grazer, Port Hamiltonian modeling

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