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Title: 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}
}

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