Dynamic Simulation of an Integrated Solid Oxide Fuel Cell System Including Current-Based Fuel Flow Control

Mueller, Fabian; Brouwer, Jacob; Jabbari, Faryar; Samuelsen, Scott

doi:10.1115/1.2174063

Cited by 111 publications

(129 citation statements)

References 9 publications

Supporting

Mentioning

128

Contrasting

Order By: Relevance

“…The solid state SOFC technology offers attractive features for a wide range of applications including small distributed power generation, future large grid-connected power generation, and auxiliary power plants aboard naval, land and aerospace vehicles [22e25]. Several potential applications require rapid transient load following capability, a historical weakness of fuel cell systems [26]. The work of Mueller et al investigated three different mechanisms that contribute to SOFC transient behavior at multiple time scales.…”

Section: Introductionmentioning

confidence: 99%

“…A spatially resolved modeling methodology suitable to this study of performance, integration and control of high temperature fuel cells has been previously developed at the University of California, Irvine and applied to integrated high temperature fuel cell systems [16,26] and fuel cell -gas turbine hybrid systems [30e32]. The methodology discretizes the fuel cell into five distinct control volumes in the transverse direction; anode current collector, anode gas channels, positive electrode-electrolyte-negative electrode (PEN), cathode gas channels, and cathode current collector, as shown in Fig.…”

mentioning

confidence: 99%

See 1 more Smart Citation

A spatially resolved physical model for transient system analysis of high temperature fuel cells

McLarty

Brouwer

Samuelsen

2013

International Journal of Hydrogen Energy

Self Cite

View full text Add to dashboard Cite

IntroductionThe U.S. Department of Energy has devoted significant effort towards technological breakthroughs for highly efficient low emission electricity production [1e4]. Rising oil prices, the possibility of carbon taxation, and unnerving dependence on foreign energy sources stimulated the federal government's interest in clean energy sources that can meet new greenhouse gas emission targets. Fuel cells promise the dual benefits of high efficiency energy conversion and extremely low pollutant emissions, but adoption of the technology has been limited by high initial capital costs and lack of market acceptance. The challenges include poor economies of scale in manufacturing due to the relatively high materials costs and surface-area scaling characteristics, the complexity of the balance of plant and control systems, a lack of proven system durability, and operations and maintenance costs. Available online at www.sciencedirect.com journal h om epa ge: www.elsev ier.com/locate/he i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 3 8 ( 2 0 1 3 ) 7 9 3 5 e7 9 4 6

show abstract

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

A spatially resolved physical model for transient system analysis of high temperature fuel cells

McLarty

Brouwer

Samuelsen

2013

International Journal of Hydrogen Energy

Self Cite

View full text Add to dashboard Cite

show abstract

“…A dynamic pressure equation balances the turbine outlet pressure, turbine inlet flow rate and the flow rate determined from the performance maps to find the turbine inlet pressure and thus compressor outlet temperature. This same approach has been employed in previous studies, resulting in accurate simulation of experimental data [32,34]. The shaft speed of the power turbine (GT2) is fixed because it is connected to an AC generator.…”

Section: Compressor and Gas Turbine Modelmentioning

confidence: 99%

“…Schematic of the pressurized 220 kW SOFC/GT hybrid system. [40] and McLarty et al [28,29] for a description of the governing physics underlying each system component of the dynamic model.…”

Section: System Designmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and theoretical evidence for control requirements in solid oxide fuel cell gas turbine hybrid systems

McLarty

Kuniba

Brouwer

et al. 2012

Journal of Power Sources

Self Cite

View full text Add to dashboard Cite

a b s t r a c tHybrid fuel cell gas turbine sensitivity to ambient perturbations is analyzed using experimental and dynamic simulation results. Experimental data gathered from the world's first pressurized hybrid SOFC-GT system tested at the University of California, Irvine, capture performance variations due to diurnal temperature oscillations. A dynamic modeling methodology demonstrates accuracy, robustness, and clearly identifies critical system sensitivities that require additional control systems development. Simulation results compare favorably with dynamic experimental responses. Predictions of component temperatures, pressures, voltage and system power exhibited 5• C, 2 kPa, 2 mV, and 0.5% error respectively. Moderate ambient temperature fluctuations, 15• C, caused variations in stack temperature of 30 • C, and system power of 5 kW. Small to moderate changes in fuel composition produced 30• C shifts in stack temperature and 25% changes in system power. Simple control loops manipulating fuel cell air flow through SOFC bypass and inlet temperature through recuperator bypass are shown to effectively mitigate internal temperature transients at the expense of reduced system output. The observed temperature fluctuations resulting from typical environmental perturbations are of concern for performance loss and diminished longevity. Experiments and dynamic simulation results indicate the importance of integrated control systems development for hybrid fuel cell gas turbine systems.

show abstract

Advances and Perspectives on Solid Oxide Fuel Cells: From Nanotechnology to Power Electronics Devices

Arshad,

Yangkou Mbianda,

Ali

et al. 2023

Energy Tech

View full text Add to dashboard Cite

Solid oxide fuel cells (SOFCs) hold an important place in energy conversion and storage systems due to their fuel flexibility, high efficiency, and environmental sustainability. The scorching temperature (≥ 800 °C) to operate SOFCs results in shorter lifespan due to rapid deterioration of accompanying components. Nanomaterials have attained considerable attention in recent years due to their great technological importance in fuel cell technology. Nanoengineering of the architectures of known materials and adopting composite approach can effectively enhance the active sites for electrode reactions. The use of nanotechnology will make SOFCs environment‐friendly and sustainable through green manufacturing processes of nanotechnology. Overviews of the contributions of nanotechnology and power electronics technologies to SOFCs, the transition of SOFCs from macro to nanotechnology, the significance of nanomaterials in SOFCs, dynamic modeling, the function of optimization techniques, and the requirement for power electronics converters in SOFCs are all provided in this piece of work. The applications of SOFCs in different sectors, prominent institutes/labs and companies involved in SOFCs’ research, future challenges and perspectives were also highlighted.This article is protected by copyright. All rights reserved.

show abstract

Dynamic Simulation of an Integrated Solid Oxide Fuel Cell System Including Current-Based Fuel Flow Control

Cited by 111 publications

References 9 publications

A spatially resolved physical model for transient system analysis of high temperature fuel cells

A spatially resolved physical model for transient system analysis of high temperature fuel cells

Experimental and theoretical evidence for control requirements in solid oxide fuel cell gas turbine hybrid systems

Advances and Perspectives on Solid Oxide Fuel Cells: From Nanotechnology to Power Electronics Devices

Contact Info

Product

Resources

About