Wave-to-wire model development and validation for two OWC type wave energy converters

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dc.contributor.author Benreguig, Pierre
dc.contributor.author Kelly, James
dc.contributor.author Pakrashi, Vikram
dc.contributor.author Murphy, Jimmy
dc.date.accessioned 2019-12-09T12:28:18Z
dc.date.available 2019-12-09T12:28:18Z
dc.date.issued 2019-10-18
dc.identifier.citation Benreguig, P., Kelly, J., Pakrashi, V. and Murphy, J. (2019) 'Wave-to-Wire Model Development and Validation for Two OWC Type Wave Energy Converters', Energies, 12(20), 3977 (28pp). doi: 10.3390/en12203977 en
dc.identifier.volume 12 en
dc.identifier.issued 20 en
dc.identifier.startpage 1 en
dc.identifier.endpage 28 en
dc.identifier.uri http://hdl.handle.net/10468/9364
dc.identifier.doi 10.3390/en12203977 en
dc.description.abstract The Tupperwave device is a closed-circuit oscillating water column (OWC) wave energy converter that uses non-return valves and two large fixed-volume accumulator chambers to create a smooth unidirectional air flow, harnessed by a unidirectional turbine. In this paper, the relevance of the Tupperwave concept against the conventional OWC concept, that uses a self-rectifying turbine, is investigated. For this purpose, wave-to-wire numerical models of the Tupperwave device and a corresponding conventional OWC device are developed and validated against experimental tests. Both devices have the same floating spar buoy structure and a similar turbine technology. The models include wave-structure hydrodynamic interaction, air turbines and generators, along with their control laws in order to encompass all power conversion stages from wave to electrical power. Hardware-in-the-loop is used to physically emulate the last power conversion stage from mechanic to electrical power and hence validate the control law and the generator numerical model. The dimensioning methodology for turbines and generators for power optimisation is explained. Eventually, the validated wave-to-wire numerical models of the conventional OWC and the Tupperwave device are used to assess and compare the performances of these two OWC type wave energy device concepts in the same wave climate. The benefits of pneumatic power smoothing by the Tupperwave device are discussed and the required efficiency of the non-return valves is investigated. en
dc.description.sponsorship OCEANERA-NET European Network (OCN/00028) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher MDPI AG en
dc.rights © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). en
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ en
dc.subject Wave energy en
dc.subject Oscillating water column en
dc.subject Air turbine en
dc.subject Valves en
dc.subject Wave-to-wave model en
dc.title Wave-to-wire model development and validation for two OWC type wave energy converters en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Pierre Benreguig, MaREI Centre, University College Cork, Cork, Ireland. +353-21-490-3000 Email:pierre.benreguig@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder European Commission en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Energies en
dc.internal.IRISemailaddress pierre.benreguig@ucc.ie en
dc.identifier.articleid 3977 en
dc.identifier.eissn 1996-1073


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© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Except where otherwise noted, this item's license is described as © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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