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Title: Utilization of Model Predictive Control to Balance Power Absorption Against Load Accumulation

Abstract

Wave energy converter (WEC) control strategies have been primarily focused on maximizing power absorption. The use of model predictive control strategies allows for a finite-horizon, multiterm objective function to be solved. This work utilizes a multiterm objective function to maximize power absorption while minimizing the structural loads on the WEC system. Furthermore, a Kalman filter and autoregressive model were used to estimate and forecast the wave exciting force and predict the future dynamics of the WEC. The WEC's power-take-off time-averaged power and structural loads under a perfect forecast assumption in irregular waves were compared against results obtained from the Kalman filter and autoregressive model to evaluate model predictive control performance.

Authors:
 [1];  [1]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), NREL Laboratory Directed Research and Development (LDRD)
OSTI Identifier:
1416516
Report Number(s):
NREL/CP-5000-70752
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the Twenty-Seventh (2017) International Ocean and Polar Engineering Conference, 25-30 June 2017, San Francisco, California
Country of Publication:
United States
Language:
English
Subject:
16 TIDAL AND WAVE POWER; wave energy converter; model predictive control; autoregressive parameterization; wave forecast; NREL

Citation Formats

Abbas, Nikhar, and Tom, Nathan M. Utilization of Model Predictive Control to Balance Power Absorption Against Load Accumulation. United States: N. p., 2017. Web.
Abbas, Nikhar, & Tom, Nathan M. Utilization of Model Predictive Control to Balance Power Absorption Against Load Accumulation. United States.
Abbas, Nikhar, and Tom, Nathan M. 2017. "Utilization of Model Predictive Control to Balance Power Absorption Against Load Accumulation". United States.
@article{osti_1416516,
title = {Utilization of Model Predictive Control to Balance Power Absorption Against Load Accumulation},
author = {Abbas, Nikhar and Tom, Nathan M},
abstractNote = {Wave energy converter (WEC) control strategies have been primarily focused on maximizing power absorption. The use of model predictive control strategies allows for a finite-horizon, multiterm objective function to be solved. This work utilizes a multiterm objective function to maximize power absorption while minimizing the structural loads on the WEC system. Furthermore, a Kalman filter and autoregressive model were used to estimate and forecast the wave exciting force and predict the future dynamics of the WEC. The WEC's power-take-off time-averaged power and structural loads under a perfect forecast assumption in irregular waves were compared against results obtained from the Kalman filter and autoregressive model to evaluate model predictive control performance.},
doi = {},
url = {https://www.osti.gov/biblio/1416516}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jun 03 00:00:00 EDT 2017},
month = {Sat Jun 03 00:00:00 EDT 2017}
}

Conference:
Other availability
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