Modelling and Control of the Wavestar Prototype

Rico Hjerm Hansen, Morten M. Kramer

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

Abstract

In the field of wave energy it is well known that control of point absorbers is essential in order to increase energy capture from waves. Correspondingly, advanced control is an integrated part of the Wavestar design. This paper presents the control method, referred to as the Wave Power Extraction Algorithm (WPEA), applied to the full-scale Wavestar Prototype for maximizing energy extraction. The WPEA is optimized based on simulations of the point absorbers in different sea states. Hence, a presentation of a hydrodynamic model of the Wavestar is included in the paper. A simplified Power Take-Off (PTO) is also added to the model, enabling the optimization of the WPEA to take into account the PTO constraints of PTO bandwidth and force limitations. The predicted results of the optimized WPEA are compared to real measurements from theWavestar Prototype, showing good compliance.
Original languageEnglish
Title of host publicationProceedings of the 9th European Wave and Tidal Energy Conference, EWTEC 2011
EditorsAbuBakr S. Bahaj
Number of pages10
PublisherUniversity of Southampton
Publication date2011
Publication statusPublished - 2011
EventThe 9th European Wave and Tidal Energy Conference : EWTEC 2011 - Southampton, United Kingdom
Duration: 5 Sept 2011 → 9 Sept 2011

Conference

ConferenceThe 9th European Wave and Tidal Energy Conference : EWTEC 2011
Country/TerritoryUnited Kingdom
CitySouthampton
Period05/09/2011 → 09/09/2011

Bibliographical note

Published on a cd.

Keywords

  • Wavestar Prototype
  • Modelling
  • WPEA
  • Reactive Control
  • Hydrodynamics
  • Optimal Control

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  • SDWED: Structural design of wave energy devices (SDWED)

    Kofoed, J. P. (Project Coordinator), Frigaard, P. (Project Participant), Sørensen, J. D. (Project Participant), Pedersen, J. K. (Project Participant), Lu, K. (Project Participant), Sørensen, J. T. (Project Participant), Bingham, H. (Project Participant), Ferreira, C. B. (Project Participant), Zanuttigh, B. (Project Participant), Estefan, S. F. (Project Participant), Nielsen, K. (Project Participant), Brito-Melo, A. (Project Participant), Sterndorff, M. (Project Participant), Ingram, D. (Project Participant) & Bard, J. (Project Participant)

    01/01/2010 → 31/12/2014

    Project: Research

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