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Title: Model predictive control of parametric excited pitch-surge modes in wave energy converters

Abstract

A parametric excitation dynamic model is used for a three degrees-of-freedom (3-DOF) wave energy converter. Since the heave motion is uncoupled from the pitch and surge modes, the pitch-surge equations of motion can be treated as a linear time varying system, or a linear system with parametric excitation. In such case the parametric exciting frequency can be tuned to twice the natural frequency of the system for higher energy harvesting. A parametric excited 3-DOF wave energy converter can harvest more power, for both regular and irregular waves, compared to the linear 3-DOF. For example, in a Bretschneider wave, the harvested energy in the three modes is about 3.8 times the energy harvested in the heave mode alone; while the same device produces about 3.1 times the heave mode energy when using a linear 3-DOF model.

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
OSTI Identifier:
1576305
Patent Number(s):
10,415,537
Application Number:
15/837,885
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: 2017 Dec 11
Country of Publication:
United States
Language:
English
Subject:
16 TIDAL AND WAVE POWER; 42 ENGINEERING

Citation Formats

Abdelkhalik, Ossama, Robinett, III, Rush D., Zou, Shangyan, Wilson, David G., Bacelli, Giorgio, Korde, Umesh, and Coe, Ryan G. Model predictive control of parametric excited pitch-surge modes in wave energy converters. United States: N. p., 2019. Web.
Abdelkhalik, Ossama, Robinett, III, Rush D., Zou, Shangyan, Wilson, David G., Bacelli, Giorgio, Korde, Umesh, & Coe, Ryan G. Model predictive control of parametric excited pitch-surge modes in wave energy converters. United States.
Abdelkhalik, Ossama, Robinett, III, Rush D., Zou, Shangyan, Wilson, David G., Bacelli, Giorgio, Korde, Umesh, and Coe, Ryan G. Tue . "Model predictive control of parametric excited pitch-surge modes in wave energy converters". United States. https://www.osti.gov/servlets/purl/1576305.
@article{osti_1576305,
title = {Model predictive control of parametric excited pitch-surge modes in wave energy converters},
author = {Abdelkhalik, Ossama and Robinett, III, Rush D. and Zou, Shangyan and Wilson, David G. and Bacelli, Giorgio and Korde, Umesh and Coe, Ryan G.},
abstractNote = {A parametric excitation dynamic model is used for a three degrees-of-freedom (3-DOF) wave energy converter. Since the heave motion is uncoupled from the pitch and surge modes, the pitch-surge equations of motion can be treated as a linear time varying system, or a linear system with parametric excitation. In such case the parametric exciting frequency can be tuned to twice the natural frequency of the system for higher energy harvesting. A parametric excited 3-DOF wave energy converter can harvest more power, for both regular and irregular waves, compared to the linear 3-DOF. For example, in a Bretschneider wave, the harvested energy in the three modes is about 3.8 times the energy harvested in the heave mode alone; while the same device produces about 3.1 times the heave mode energy when using a linear 3-DOF model.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {9}
}

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