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Title: Model Predictive Control of parametric excited pitch-surge modes in wave energy converters

Abstract

For a heave-pitch-surge three-degrees-of-freedom wave energy converter, the heave mode is usually decoupled from the pitch-surge modes for small motions. The pitch-surge modes are usually coupled and are parametrically excited by the heave mode, depending on the buoy geometry. In this paper, a Model Predictive Control is applied to the parametric excited pitch-surge motion, while the heave motion is optimized independently. The optimality conditions are derived, and a gradient-based numerical optimization algorithm is used to search for the optimal control. Numerical tests are conducted for regular and Bretschneider waves. The results demonstrate that the proposed control can be implemented to harvest more than three times the energy that can be harvested using a heave-only wave energy converter. As a result, the energy harvested using a parametrically excited model is higher than that is harvested when using a linear model.

Authors:
 [1]; ORCiD logo [1];  [1];  [1];  [2];  [2];  [2]
  1. Michigan Technological Univ., Houghton, MI (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
OSTI Identifier:
1485453
Alternate Identifier(s):
OSTI ID: 1496468
Report Number(s):
SAND-2018-12264J
Journal ID: ISSN 2214-1669; 669161
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Marine Energy
Additional Journal Information:
Journal Volume: 19; Journal Issue: C; Journal ID: ISSN 2214-1669
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
16 TIDAL AND WAVE POWER; Wave energy conversion; Parametric excited wave energy conversion; Pitch-surge control; Model Predictive Control

Citation Formats

Zou, Shangyan, Abdelkhalik, Ossama, Robinett, III, Rush D., Korde, Umesh A., Bacelli, Giorgio, Wilson, David G., and Coe, Ryan. Model Predictive Control of parametric excited pitch-surge modes in wave energy converters. United States: N. p., 2017. Web. doi:10.1016/j.ijome.2017.05.002.
Zou, Shangyan, Abdelkhalik, Ossama, Robinett, III, Rush D., Korde, Umesh A., Bacelli, Giorgio, Wilson, David G., & Coe, Ryan. Model Predictive Control of parametric excited pitch-surge modes in wave energy converters. United States. doi:10.1016/j.ijome.2017.05.002.
Zou, Shangyan, Abdelkhalik, Ossama, Robinett, III, Rush D., Korde, Umesh A., Bacelli, Giorgio, Wilson, David G., and Coe, Ryan. Wed . "Model Predictive Control of parametric excited pitch-surge modes in wave energy converters". United States. doi:10.1016/j.ijome.2017.05.002. https://www.osti.gov/servlets/purl/1485453.
@article{osti_1485453,
title = {Model Predictive Control of parametric excited pitch-surge modes in wave energy converters},
author = {Zou, Shangyan and Abdelkhalik, Ossama and Robinett, III, Rush D. and Korde, Umesh A. and Bacelli, Giorgio and Wilson, David G. and Coe, Ryan},
abstractNote = {For a heave-pitch-surge three-degrees-of-freedom wave energy converter, the heave mode is usually decoupled from the pitch-surge modes for small motions. The pitch-surge modes are usually coupled and are parametrically excited by the heave mode, depending on the buoy geometry. In this paper, a Model Predictive Control is applied to the parametric excited pitch-surge motion, while the heave motion is optimized independently. The optimality conditions are derived, and a gradient-based numerical optimization algorithm is used to search for the optimal control. Numerical tests are conducted for regular and Bretschneider waves. The results demonstrate that the proposed control can be implemented to harvest more than three times the energy that can be harvested using a heave-only wave energy converter. As a result, the energy harvested using a parametrically excited model is higher than that is harvested when using a linear model.},
doi = {10.1016/j.ijome.2017.05.002},
journal = {International Journal of Marine Energy},
number = C,
volume = 19,
place = {United States},
year = {2017},
month = {5}
}

Journal Article:
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Figures / Tables:

Figure 1 Figure 1: Geometry of water level a 3-DoF cylindrical Buoy; MWL is the mean

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Works referencing / citing this record:

Control of Three Degrees-of-Freedom Wave Energy Converters Using Pseudo-Spectral Methods
journal, January 2018

  • Abdelkhalik, Ossama; Zou, Shangyan; Robinett, Rush
  • Journal of Dynamic Systems, Measurement, and Control, Vol. 140, Issue 7
  • DOI: 10.1115/1.4038860