uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Review of control strategies for wave energy conversion systems and their validation: the wave-to-wire approach
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. Department of Electric Power Engineering, Norwegian University of Science and Technology (NTNU), Norway.ORCID iD: 0000-0002-4842-1029
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.ORCID iD: 0000-0003-2197-5352
Department of Electric Power Engineering, Norwegian University of Science and Technology (NTNU), Norway.
2018 (English)In: Renewable & sustainable energy reviews, ISSN 1364-0321, E-ISSN 1879-0690, Vol. 81, p. 366-379Article, review/survey (Refereed) Published
Abstract [en]

Ocean waves are a promising source of renewable energy. In this paper, we briefly introduce the characteristics of ocean wave energy and summarize the principles of harvesting ocean energy by wave energy converters. We also review the prototypes or commercial devices deployed in real sea between 2005 and July 2016.

In addition, we present the concept of a wave-to-wire model as a framework to systematically review and compare control strategies for wave energy conversion systems, with a focus on the numerical and experimental validation.

Place, publisher, year, edition, pages
Netherlands: Elsevier, 2018. Vol. 81, p. 366-379
Keywords [en]
Wave energy converter, Ocean wave energy conversion, Wave-to-wire model, Control strategies, Power take-off, Hydrodynamic control
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:uu:diva-320904DOI: 10.1016/j.rser.2017.06.074ISI: 000417070500028OAI: oai:DiVA.org:uu-320904DiVA, id: diva2:1091479
Funder
Swedish Research Council, 40421-1Available from: 2017-04-26 Created: 2017-04-26 Last updated: 2018-03-12Bibliographically approved
In thesis
1. Modelling and Advanced Control of Fully Coupled Wave Energy Converters Subject to Constraints: the Wave-to-wire Approach
Open this publication in new window or tab >>Modelling and Advanced Control of Fully Coupled Wave Energy Converters Subject to Constraints: the Wave-to-wire Approach
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Ocean wave energy is a promising renewable source to contribute to supplying the world’s energy demand. The Division of Electricity at Uppsala University is developing a technology to capture energy from ocean waves with a wave energy converter (WEC) consisting of a linear permanent magnet generator and a point absorber. The linear generator is placed on sea bed and is driven directly by the floating absorber. Since March 2006, multiple wave energy converters have been deployed on the Swedish west coast outside the town of Lysekil. The technology is verified by long-term operation during at sea and satisfactory reliability of the electricity generation.

This thesis focuses on developing advanced control strategies for fully coupled wave energy converters subject to constraints. A nonlinear control strategy is studied in detail for a single WEC subject to constraints under regular and irregular waves. Besides, two coordinated control strategies are developed to investigate the performance of a wave energy farm subject to constraints. The performance of the WECs using these control strategies are investigated in case studies, and optimal PTO damping coefficients are found to maximize the output power. The results show that these control strategies can significantly improve the performance of the WECs, in terms of mean power, compared to a conventional control.

Besides these control strategies, a wave-to-wire simulation platform is built to study the power generation control of the WEC subject to constraints.  The wave-to-wire simulation platform allows both nonlinear and linear control force. The results show that there is a good agreement between the desired value and the actual value after advanced control.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2017. p. 116
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1528
Keywords
Ocean wave energy, marine energy converter, wave energy converter, wave energy farm, potential flow theory, linear permanent magnet generator, control strategy, wave-to-wire approach, physical constraints, power generation control.
National Category
Engineering and Technology
Research subject
Engineering Science with specialization in Science of Electricity
Identifiers
urn:nbn:se:uu:diva-320906 (URN)978-91-554-9934-1 (ISBN)
Public defence
2017-09-01, Polhemsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 13:15 (English)
Opponent
Supervisors
Available from: 2017-06-01 Created: 2017-04-26 Last updated: 2017-06-08

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Wang, LiguoIsberg, Jan

Search in DiVA

By author/editor
Wang, LiguoIsberg, Jan
By organisation
Electricity
In the same journal
Renewable & sustainable energy reviews
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 415 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf