Wave energy converter buoy with variable geometry
Abstract
A nonlinear control design technique capitalizes on a wave energy converter comprising a shaped buoy having a variable geometry wave energy. For example, the shaped buoy can have an hourglass (HG) geometry having a variable cone or steepness angle. The HG buoy is assumed to operate in the heave motion of the wave. The unique interaction between the HG buoy and the wave creates a nonlinear cubic storage effect that produces actual energy storage or reactive power during operation. A multi-frequency Bretschneider spectrum wave excitation input was simulated for the HG design both with constant and varying steepness angle profiles which demonstrated further increased power generation with changing sea states for the variable design.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1986964
- Patent Number(s):
- 11536243
- Application Number:
- 17/723,690
- Assignee:
- National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
- DOE Contract Number:
- NA0003525
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 04/19/2022
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Wilson, David G., Robinett, III, Rush D., Weaver, Wayne W., and Glover, Steven F. Wave energy converter buoy with variable geometry. United States: N. p., 2022.
Web.
Wilson, David G., Robinett, III, Rush D., Weaver, Wayne W., & Glover, Steven F. Wave energy converter buoy with variable geometry. United States.
Wilson, David G., Robinett, III, Rush D., Weaver, Wayne W., and Glover, Steven F. Tue .
"Wave energy converter buoy with variable geometry". United States. https://www.osti.gov/servlets/purl/1986964.
@article{osti_1986964,
title = {Wave energy converter buoy with variable geometry},
author = {Wilson, David G. and Robinett, III, Rush D. and Weaver, Wayne W. and Glover, Steven F.},
abstractNote = {A nonlinear control design technique capitalizes on a wave energy converter comprising a shaped buoy having a variable geometry wave energy. For example, the shaped buoy can have an hourglass (HG) geometry having a variable cone or steepness angle. The HG buoy is assumed to operate in the heave motion of the wave. The unique interaction between the HG buoy and the wave creates a nonlinear cubic storage effect that produces actual energy storage or reactive power during operation. A multi-frequency Bretschneider spectrum wave excitation input was simulated for the HG design both with constant and varying steepness angle profiles which demonstrated further increased power generation with changing sea states for the variable design.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {12}
}
Works referenced in this record:
Dynamically tuned wave energy converter
patent, May 2014
- Gregory, Bruce
- US Patent Document 8,713,928
A Hamiltonian Surface-Shaping Approach for Control System Analysis and the Design of Nonlinear Wave Energy Converters
journal, February 2019
- Darani, Shadi; Abdelkhalik, Ossama; Robinett, Rush
- Journal of Marine Science and Engineering, Vol. 7, Issue 2
Ocean wave energy conversion system
patent, August 1992
- Rynne, Timothy M.
- US Patent Document 5,136,173
Wave Energy Conversion Apparatus
patent-application, July 2018
- Moffat, Brian Lee
- US Patent Application 15/851,456; 2018/0202415 Al
Wave Power Generator
patent-application, May 2015
- Frtunik, Dalibor; Brawley, George
- US Patent Application 14/406137; 20150145250
Buoyant Actuator
patent-application, July 2010
- Burns, Alan Robert
- US Patent Application 12/513291; 20100171312
Multiresonant Feedback Control of a Three-Degree-of-Freedom Wave Energy Converter
journal, October 2017
- Abdelkhalik, Ossama; Zou, Shangyan; Robinett, Rush D.
- IEEE Transactions on Sustainable Energy, Vol. 8, Issue 4
Extending Complex Conjugate Control to Nonlinear Wave Energy Converters
journal, January 2020
- Wilson, David G.; Robinett, Rush D.; Bacelli, Giorgio
- Journal of Marine Science and Engineering, Vol. 8, Issue 2
What is a limit cycle?
journal, December 2008
- Robinett, Rush D.; Wilson, David G.
- International Journal of Control, Vol. 81, Issue 12, p. 1886-1900
Optimization of nonlinear wave energy converters
journal, August 2018
- Abdelkhalik, Ossama; Darani, Shadi
- Ocean Engineering, Vol. 162
A Comparison of Selected Strategies for Adaptive Control of Wave Energy Converters
journal, March 2011
- Hals, Jørgen; Falnes, Johannes; Moan, Torgeir
- Journal of Offshore Mechanics and Arctic Engineering, Vol. 133, Issue 3
Multi-resonant feedback control of heave wave energy converters
journal, November 2016
- Song, Jiajun; Abdelkhalik, Ossama; Robinett, Rush
- Ocean Engineering, Vol. 127
Wave energy device with constricted tube and generator pod
patent, August 2019
- Moffat, Brian Lee; Sheldon-Coulson, Garth Alexander
- US Patent Document 10,385,820
Float for wave energy converter (WEC)
patent, June 2013
- Gerber, James S.; Phelan, Christopher Thomas; Qiu, Wei-Hua
- US Patent Document 8,464,527
Wave energy conversion apparatus
patent, January 2015
- Moffat, Brian Lee
- US Patent Document 8,925,313
Control, power and electrical components in wave energy conversion systems: A review of the technologies
journal, January 2017
- Ozkop, Emre; Altas, Ismail H.
- Renewable and Sustainable Energy Reviews, Vol. 67
Dynamic tuning for wave energy conversion
patent, May 2017
- Gregory, Bruce
- US Patent Document 9,657,710
Nonlinear hydrodynamic and real fluid effects on wave energy converters
journal, March 2015
- Wolgamot, Hugh A.; Fitzgerald, Colm J.
- Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, Vol. 229, Issue 7
Dynamically Tuned Wave Energy Converter
patent-application, April 2011
- Gregory, Bruce
- US Patent Application 12/884,792; 2011/0089689 Al
Method and system for extracting kinetic energy from surface waves of a water
patent, April 2018
- Prins, Wouter Adrianus
- US Patent Document 9,951,747