Article (Scientific journals)
The effect of input parameter variation on the accuracy of a vanadium redox flow battery simulation model
Zugschwert, Christina; Dundálek, Jan; LEYER, Stephan et al.
2021In Batteries, 7 (1), p. 1 - 17
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Keywords :
Applications; Energy storage; Grey box simulation model; Integrated energy system simulations; Model parametrization; Modeling; Parameter optimization process; Redox flow battery; Vanadium redox flow battery; Energy system simulations; Gray box simulation model; Grey-box; Integrated energy system simulation; Integrated energy systems; Parameter optimization; Simulation model; Vanadium redox flow batteries; Energy Engineering and Power Technology; Electrochemistry; Electrical and Electronic Engineering
Abstract :
[en] Accurately predicting battery behavior, while using low input data, is highly desirable in embedded simulation architectures like grid or integrated energy system analysis. Currently, the available vanadium redox flow battery (VRFB) models achieve highly accurate predictions of electrochemical behavior or control algorithms, while the optimization of the required input data scope is neglected. In this study, a parametrization tool for a DC grey box simulation model is developed using measurements with a 10 kW/100 kWh VRFB. An objective function is applied to optimize the required input data scope while analyzing simulation accuracy. The model is based on a differential-algebraic system, and an optimization process allows model parameter estimation and verification while reducing the input data scope. Current losses, theoretical storage capacity, open circuit voltage, and ohmic cell resistance are used as fitting parameters. Internal electrochemical phenomena are represented by a self-discharge current while material related losses are represented by a changing ohmic resistance. Upon reducing input data the deviation between the model and measurements shows an insignificant increase of 2% even for a 60% input data reduction. The developed grey box model is easily adaptable to other VRFB and is highly integrable into an existing energy architecture.
Disciplines :
Mechanical engineering
Author, co-author :
Zugschwert, Christina ;  Technology Centre Energy, University of Applied Sciences Landshut, Ruhstorf an der Rott, Germany ; Faculty of Science, Technology and Communication, University of Luxembourg, Luxembourg, Luxembourg
Dundálek, Jan;  Department of Chemical Engineering, University of Chemistry and Technology, Praha 6, Czech Republic ; New Technologies—Research Centre, University of West Bohemia, Plzeň, Czech Republic
LEYER, Stephan ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
Hadji-Minaglou, Jean-Régis ;  Faculty of Science, Technology and Communication, University of Luxembourg, Luxembourg, Luxembourg
Kosek, Juraj ;  Department of Chemical Engineering, University of Chemistry and Technology, Praha 6, Czech Republic ; New Technologies—Research Centre, University of West Bohemia, Plzeň, Czech Republic
Pettinger, Karl-Heinz;  Technology Centre Energy, University of Applied Sciences Landshut, Ruhstorf an der Rott, Germany
External co-authors :
yes
Language :
English
Title :
The effect of input parameter variation on the accuracy of a vanadium redox flow battery simulation model
Publication date :
March 2021
Journal title :
Batteries
eISSN :
2313-0105
Publisher :
MDPI
Volume :
7
Issue :
1
Pages :
1 - 17
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
Funding: This research was funded by INTERREG V, European Regional Development Fund of the European Union, grant number FSTORE/18.
Available on ORBilu :
since 12 January 2024

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