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Wave Power Output Smoothing through the Use of a High-Speed Kinetic Buffer
Electrical Engineering Department, Universidad Carlos III de Madrid, 28911 Madrid, Spain.ORCID iD: 0000-0003-1115-1392
Electrical Engineering Department, Universidad Carlos III de Madrid, 28911 Madrid, Spain.ORCID iD: 0000-0001-9006-8196
Electrical Engineering Department, Universidad Carlos III de Madrid, 28911 Madrid, Spain.ORCID iD: 0000-0001-9487-0127
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.ORCID iD: 0000-0002-5361-7739
2019 (English)In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 12, no 11, article id 2196Article in journal (Refereed) Published
Abstract [en]

In this paper, a new control strategy for power output smoothing in a hybrid wave energyinstallation coupled to a flywheel energy storage system (FESS) is proposed. The control schemeis composed by three stages: a wave generator clustering process at the farm connection point;a power filtering process; and the control of the flywheel energy storage in order to improve thepower output of the hybrid wave farm. The proposed control is validated at the existing LysekilWave Energy Site located in Sweden, by using real generator measurements. Results show that theapplication of the flywheel energy storage system reduces the maximum peak power output fromthe wave energy installation by 85% and the peak/average power ratio by 76%. It is shown thatthe proposed system can reduce grid losses by 51%, consequently improving the energy efficiencyof the power network. The application of the proposed control strategy allows the hybrid wavepower plant to follow a power reference signal that is imposed by the grid operator. In addition,the study demonstrates that the application of the proposed control allows the hybrid wave powerplant to follow a power reference signal that is imposed by the grid operator. In addition, the studydemonstrates that the application of the proposed control enables a wave farm with flywheel energystorage to be a controllable, flexible resource in order to fulfill future grid code requirements formarine energy installations.

Place, publisher, year, edition, pages
2019. Vol. 12, no 11, article id 2196
Keywords [en]
wave energy, energy storage, flywheel, power take off (PTO), flywheel energy storage system (FESS)
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science
Identifiers
URN: urn:nbn:se:uu:diva-385125DOI: 10.3390/en12112196ISI: 000472635900163OAI: oai:DiVA.org:uu-385125DiVA, id: diva2:1322915
Available from: 2019-06-11 Created: 2019-06-11 Last updated: 2019-08-26Bibliographically approved

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Rojas-Delgado, BrendaAlonso, MonicaAmaris, Hortensiade Santiago, Juan
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