Hardware-in-the-Loop Validation of Model Predictive Control of a Discrete Fluid Power Power Take-Off System for Wave Energy Converters

Model predictive control based wave power extraction algorithms have been developed and found promising for wave energy converters. Although mostly proven by simulation studies, model predictive control based algorithms have shown to outperform classical wave power extraction algorithms such as line...

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Main Authors: Anders H. Hansen, Magnus F. Asmussen, Michael M. Bech
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/19/3668
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author Anders H. Hansen
Magnus F. Asmussen
Michael M. Bech
author_facet Anders H. Hansen
Magnus F. Asmussen
Michael M. Bech
author_sort Anders H. Hansen
collection DOAJ
description Model predictive control based wave power extraction algorithms have been developed and found promising for wave energy converters. Although mostly proven by simulation studies, model predictive control based algorithms have shown to outperform classical wave power extraction algorithms such as linear damping and reactive control. Prediction models and objective functions have, however, often been simplified a lot by for example, excluding power take-off system losses. Furthermore, discrete fluid power forces systems has never been validated experimentally in published research. In this paper a model predictive control based wave power extraction algorithm is designed for a discrete fluid power power take-off system. The loss models included in the objective function are based on physical models of the losses associated with discrete force shifts and throttling. The developed wave power extraction algorithm directly includes the quantized force output and the losses models of the discrete fluid power system. The experimental validation of the wave power extraction algorithm developed in the paper shown an increase of 14.6% in yearly harvested energy when compared to a reactive control algorithm.
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spelling doaj.art-3b6270dbebc74912a6b0c04fd60d8dfa2022-12-22T04:28:41ZengMDPI AGEnergies1996-10732019-09-011219366810.3390/en12193668en12193668Hardware-in-the-Loop Validation of Model Predictive Control of a Discrete Fluid Power Power Take-Off System for Wave Energy ConvertersAnders H. Hansen0Magnus F. Asmussen1Michael M. Bech2Department of Energy Technology, Aalborg University, Pontoppidanstraede 111, 9220 Aalborg East, DenmarkDepartment of Energy Technology, Aalborg University, Pontoppidanstraede 111, 9220 Aalborg East, DenmarkDepartment of Energy Technology, Aalborg University, Pontoppidanstraede 111, 9220 Aalborg East, DenmarkModel predictive control based wave power extraction algorithms have been developed and found promising for wave energy converters. Although mostly proven by simulation studies, model predictive control based algorithms have shown to outperform classical wave power extraction algorithms such as linear damping and reactive control. Prediction models and objective functions have, however, often been simplified a lot by for example, excluding power take-off system losses. Furthermore, discrete fluid power forces systems has never been validated experimentally in published research. In this paper a model predictive control based wave power extraction algorithm is designed for a discrete fluid power power take-off system. The loss models included in the objective function are based on physical models of the losses associated with discrete force shifts and throttling. The developed wave power extraction algorithm directly includes the quantized force output and the losses models of the discrete fluid power system. The experimental validation of the wave power extraction algorithm developed in the paper shown an increase of 14.6% in yearly harvested energy when compared to a reactive control algorithm.https://www.mdpi.com/1996-1073/12/19/3668wave energymodel predictive controlexperimental validationreal-time mpcdiscrete fluid power pto
spellingShingle Anders H. Hansen
Magnus F. Asmussen
Michael M. Bech
Hardware-in-the-Loop Validation of Model Predictive Control of a Discrete Fluid Power Power Take-Off System for Wave Energy Converters
Energies
wave energy
model predictive control
experimental validation
real-time mpc
discrete fluid power pto
title Hardware-in-the-Loop Validation of Model Predictive Control of a Discrete Fluid Power Power Take-Off System for Wave Energy Converters
title_full Hardware-in-the-Loop Validation of Model Predictive Control of a Discrete Fluid Power Power Take-Off System for Wave Energy Converters
title_fullStr Hardware-in-the-Loop Validation of Model Predictive Control of a Discrete Fluid Power Power Take-Off System for Wave Energy Converters
title_full_unstemmed Hardware-in-the-Loop Validation of Model Predictive Control of a Discrete Fluid Power Power Take-Off System for Wave Energy Converters
title_short Hardware-in-the-Loop Validation of Model Predictive Control of a Discrete Fluid Power Power Take-Off System for Wave Energy Converters
title_sort hardware in the loop validation of model predictive control of a discrete fluid power power take off system for wave energy converters
topic wave energy
model predictive control
experimental validation
real-time mpc
discrete fluid power pto
url https://www.mdpi.com/1996-1073/12/19/3668
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