| Description |
1 online resource (10 pages) : color illustrations. |
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text txt rdacontent |
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computer c rdamedia |
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online resource cr rdacarrier |
| Series |
NREL/CP ; 5000-73490 |
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Conference paper (National Renewable Energy Laboratory (U.S.)) ; 5000-73490.
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| Note |
"October 2019." |
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Presented at the European Wave and Tidal Energy Conference, 1-6 September 2019, Napoli, Italy. |
| Bibliography |
Includes bibliographical references (page 10). |
| Funding |
U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Water Power Technologies Office. Contract No. DE-AC36-08GO28308. |
| Note |
Description based on online resource; title from PDF title page (NREL, viewed on July 15, 2020). |
| Summary |
This work presents a novel wave energy converter device concept that combines a submerged pressure differential plate with variable geometry modules. The two variable geometry sections, placed at the force and aft locations on the plate, consist of five identical flaps that are opened in ascending order starting with the flaps closest to the edges of the plate and moving inward. The variable geometry modules act as control surfaces that allow for the hull geometry to be adjusted leading to changes in the hydrodynamics. The device geometry is controlled in a quasi-static fashion while the power-take off (PTO) unit would be controlled on a wave-to-wave time scale. The submerged plate is tethered directly to the seabed by integrated mooring and PTO lines eliminating the need for a second reaction body. A linear frequency domain analysis is used to evaluate device performance in terms of absorbed power, PTO force, and absorber body motion. The frequency domain analysis required the linearization of the PTO dynamics to couple the fore and aft PTOs to the motion of the absorber body. The inclusion of the variable geometry modules was shown to be effective at altering the device geometry to provide changes in the absorber hydrodynamics to produce measurable reductions in structural and PTO loading. |
| Subject |
Hydrodynamics.
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Ocean wave power.
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Energy conversion.
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Hydrodynamique.
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Énergie des vagues.
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Énergie -- Conversion.
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Energy conversion (OCoLC)fst00910026
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Hydrodynamics (OCoLC)fst00964901
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Ocean wave power (OCoLC)fst01043591
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| Indexed Term |
hydrodynamics |
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load reduction |
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submerged wave energy converter |
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variable geometry |
| Added Author |
National Renewable Energy Laboratory (U.S.), issuing body.
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| Standard No. |
1573193 OSTI ID |
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0000-0002-8489-312X |
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0000-0002-1771-5083 |
| Gpo Item No. |
0430-P-04 (online) |
| Sudoc No. |
E 9.17:NREL/CP 5000-73490 |
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