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Dynamic modeling of a solid oxide fuel cell system in Modelica

Andersson, Daniel and Åberg, Erik (2010)
Department of Energy Sciences
Abstract
In this study a dynamic model of a solid oxide fuel cell system has been
developed. The work has been conducted in cooperation with Modelon
AB using the Modelica language and the Dymola modeling and simulation
tool. Modelica is an equation based, object oriented modeling language,
which promotes flexibility and reuse of code. The objective of the study
is to investigate the suitability of the Modelica language for dynamic fuel
cell modeling. A cell electrolyte model including ohmic, activation and
concentration irreversibilities is implemented and validated against simu-
lations and experimental data presented in the open literature. A 1D solid
oxide fuel cell model is created by integrating the electrolyte model and a
1D fuel... (More)
In this study a dynamic model of a solid oxide fuel cell system has been
developed. The work has been conducted in cooperation with Modelon
AB using the Modelica language and the Dymola modeling and simulation
tool. Modelica is an equation based, object oriented modeling language,
which promotes flexibility and reuse of code. The objective of the study
is to investigate the suitability of the Modelica language for dynamic fuel
cell modeling. A cell electrolyte model including ohmic, activation and
concentration irreversibilities is implemented and validated against simu-
lations and experimental data presented in the open literature. A 1D solid
oxide fuel cell model is created by integrating the electrolyte model and a
1D fuel flow model, which includes dynamic internal steam reforming of
methane and water-gas shift reactions. Several cells are then placed with
parallel flow paths and connected thermally and electrically in series. By
introducing manifold pressure drop a stack model is created. The stack
model is used in a complete system model including an autothermal re-
former, a catalytic afterburner and heat recirculation. Four reactions are
modeled in the autothermal reformer. Those are two types of methane
steam reforming, the water-gas shift reaction and total combustion of
methane.
The simulation results have been compared with those in the literature
and it can be concluded that the models are accurate and that Dymola
and Modelica are tools well suited for simulations of the transient fuel cell
system behaviour. (Less)
Please use this url to cite or link to this publication:
author
Andersson, Daniel and Åberg, Erik
supervisor
organization
year
type
H1 - Master's Degree (One Year)
subject
keywords
Solid oxide fuel cell Modelica simulation
report number
ISRN LUTMDN/TMHP--10/5204--SE
ISSN
0282-1990
language
English
id
1549929
date added to LUP
2010-02-23 14:30:14
date last changed
2012-07-06 20:19:49
@misc{1549929,
  abstract     = {In this study a dynamic model of a solid oxide fuel cell system has been
developed. The work has been conducted in cooperation with Modelon
AB using the Modelica language and the Dymola modeling and simulation
tool. Modelica is an equation based, object oriented modeling language,
which promotes flexibility and reuse of code. The objective of the study
is to investigate the suitability of the Modelica language for dynamic fuel
cell modeling. A cell electrolyte model including ohmic, activation and
concentration irreversibilities is implemented and validated against simu-
lations and experimental data presented in the open literature. A 1D solid
oxide fuel cell model is created by integrating the electrolyte model and a
1D fuel flow model, which includes dynamic internal steam reforming of
methane and water-gas shift reactions. Several cells are then placed with
parallel flow paths and connected thermally and electrically in series. By
introducing manifold pressure drop a stack model is created. The stack
model is used in a complete system model including an autothermal re-
former, a catalytic afterburner and heat recirculation. Four reactions are
modeled in the autothermal reformer. Those are two types of methane
steam reforming, the water-gas shift reaction and total combustion of
methane.
The simulation results have been compared with those in the literature
and it can be concluded that the models are accurate and that Dymola
and Modelica are tools well suited for simulations of the transient fuel cell
system behaviour.},
  author       = {Andersson, Daniel and Åberg, Erik},
  issn         = {0282-1990},
  keyword      = {Solid oxide fuel cell Modelica simulation},
  language     = {eng},
  note         = {Student Paper},
  title        = {Dynamic modeling of a solid oxide fuel cell system in Modelica},
  year         = {2010},
}