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Title: Multi-resonant feedback control of multiple degree-of-freedom wave energy converters

Abstract

Multi-resonant control of a 3 degree-of-freedom (heave-pitch-surge) wave energy converter enables energy capture that can be in the order of three times the energy capture of a heave-only wave energy converter. The invention uses a time domain feedback control strategy that is optimal based on the criteria of complex conjugate control. The multi-resonant control can also be used to shift the harvested energy from one of the coupled modes to another, enabling the elimination of one of the actuators otherwise required in a 3 degree-of-freedom wave energy converter. This feedback control strategy does not require wave prediction; it only requires the measurement of the buoy position and velocity.

Inventors:
; ; ; ; ; ;
Issue Date:
Research Org.:
National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (United States); Michigan Technological Univ., Houghton, MI (United States); South Dakota Board of Regents, Pierre, SD (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1600327
Patent Number(s):
10,488,828
Application Number:
15/830,770
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM); Michigan Technological University (Houghton, MI); South Dakota Board of Regents (Pierre, SD)
DOE Contract Number:  
NA0003525
Resource Type:
Patent
Resource Relation:
Patent File Date: 12/04/2017
Country of Publication:
United States
Language:
English
Subject:
16 TIDAL AND WAVE POWER

Citation Formats

Abdelkhalik, Ossama, Zou, Shangyan, Robinett, III, Rush D., Wilson, David G., Bacelli, Giorgio, Coe, Ryan Geoffrey, and Korde, Umesh. Multi-resonant feedback control of multiple degree-of-freedom wave energy converters. United States: N. p., 2019. Web.
Abdelkhalik, Ossama, Zou, Shangyan, Robinett, III, Rush D., Wilson, David G., Bacelli, Giorgio, Coe, Ryan Geoffrey, & Korde, Umesh. Multi-resonant feedback control of multiple degree-of-freedom wave energy converters. United States.
Abdelkhalik, Ossama, Zou, Shangyan, Robinett, III, Rush D., Wilson, David G., Bacelli, Giorgio, Coe, Ryan Geoffrey, and Korde, Umesh. Tue . "Multi-resonant feedback control of multiple degree-of-freedom wave energy converters". United States. https://www.osti.gov/servlets/purl/1600327.
@article{osti_1600327,
title = {Multi-resonant feedback control of multiple degree-of-freedom wave energy converters},
author = {Abdelkhalik, Ossama and Zou, Shangyan and Robinett, III, Rush D. and Wilson, David G. and Bacelli, Giorgio and Coe, Ryan Geoffrey and Korde, Umesh},
abstractNote = {Multi-resonant control of a 3 degree-of-freedom (heave-pitch-surge) wave energy converter enables energy capture that can be in the order of three times the energy capture of a heave-only wave energy converter. The invention uses a time domain feedback control strategy that is optimal based on the criteria of complex conjugate control. The multi-resonant control can also be used to shift the harvested energy from one of the coupled modes to another, enabling the elimination of one of the actuators otherwise required in a 3 degree-of-freedom wave energy converter. This feedback control strategy does not require wave prediction; it only requires the measurement of the buoy position and velocity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {11}
}

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Works referenced in this record:

Controller for a wave energy converter
patent, September 2015