A new control strategy of solid oxide fuel cell based on coordination between hydrogen fuel flow rate and utilization factor

2013 ◽  
Vol 27 ◽  
pp. 505-514 ◽  
Author(s):  
Majid Nayeripour ◽  
Mohammad Hoseintabar
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Flow Rate ◽  
Control Strategy ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hydrogen Fuel ◽  
Fuel Flow Rate ◽  
Utilization Factor ◽  
Fuel Flow

Influence of fuel flow rate on the performance of micro tubular solid oxide fuel cell

2020 ◽  
Vol 45 (24) ◽  
pp. 13459-13468 ◽  
Author(s):  
Daan Cui ◽  
Yulong Ji ◽  
Chao Chang ◽  
Zhe Wang ◽  
Xiu Xiao
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Flow Rate ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Fuel Flow Rate ◽  
Fuel Flow

scholarly journals Effects of Fe-Doped Electrolyte and Feed Flow Rate Evaluation in Home Made Solid Oxide Fuel Cell

2021 ◽  
Vol 1143 (1) ◽  
pp. 012007
Author(s):  
Hary Devianto ◽  
Isdiriyani Nurdin ◽  
Pramujo Widiatmoko ◽  
Kafi Adi Prasetya ◽  
Basil Pradipta
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Flow Rate ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Feed Flow Rate ◽  
Rate Evaluation

Time Characterisation of the Anodic Loop of a Pressurized Solid Oxide Fuel Cell System

2007 ◽  
Author(s):  
A. Traverso ◽  
F. Trasino ◽  
L. Magistri ◽  
A. F. Massardo
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Frequency Analysis ◽  
Solid Oxide ◽  
Model Description ◽  
Oxide Fuel ◽  
Realistic Case ◽  
Threshold Frequency ◽  
Fuel Flow ◽  
First Case

A dynamic Solid Oxide Fuel Cell (SOFC) model was integrated with other system components (i.e.: reformer, anodic off-gas burner, anodic ejector) to build a system model that can simulate the time response of the anode side of an integrated 250 kW pressurized SOFC hybrid system. After model description and data on previous validation work, this paper describes the results obtained for the dynamic analysis of the anodic loop, taking into account two different conditions for the fuel flow input: in the first Case (I), the fuel flow follows with no delay the value provided by the control system, while in the second Case (II) the flow is delayed by a volume between the regulating valve and the anode ejector, this being a more realistic case. The step analysis was used to obtain information about the time scales of the investigated phenomena: such characteristic times were successfully correlated to the results of the subsequent frequency analysis. This is expected to provide useful indications for designing robust anodic loop controllers. In the frequency analysis, most phase values remained in the 0–180° range, thus showing the expected delay-dominated behavior in the anodic loop response to the input variations in the fuel and current. In Case I, a threshold frequency of 5Hz for the pressure and STCR, and a threshold frequency of 31Hz for the anodic flow were obtained. In the more realistic Case II, natural gas pipe delay dominates, and a threshold frequency of 1.2Hz was identified, after which property oscillations start to decrease towards null values.

ANN–supported control strategy for a solid oxide fuel cell working on demand for a public utility building

2018 ◽  
Vol 43 (6) ◽  
pp. 3555-3565 ◽  
Author(s):  
Łukasz Szabłowski ◽  
Jarosław Milewski ◽  
Krzysztof Badyda ◽  
Jakub Kupecki
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Control Strategy ◽  
Public Utility ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
On Demand

Performance Evaluation of Solid Oxide Fuel Cell Engines Integrated With Single/Dual-Spool Turbochargers

2011 ◽  
Vol 8 (6) ◽  
Author(s):  
So-Ryeok Oh ◽  
Jing Sun ◽  
Herb Dobbs ◽  
Joel King
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Control Strategies ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Operating Characteristics ◽  
Load Following ◽  
Fuel Flow

This study investigates the performance and operating characteristics of 5kW-class solid oxide fuel cell and gas turbine (SOFC/GT) hybrid systems for two different configurations, namely single- and dual- spool gas turbines. Both single and dual spool turbo-chargers are widely used in the gas turbine industry. Even though their operation is based on the same physical principles, their performance characteristics and operation parameters vary considerably due to different designs. The implications of the differences on the performance of the hybrid SOFC/GT have not been discussed in literature, and will be the topic of this paper. Operating envelops of single and dual shaft systems are identified and compared. Performance in terms of system efficiency and load following is analyzed. Sensitivities of key variables such as power, SOFC temperature, and GT shaft speed to the control inputs (namely, fuel flow, SOFC current, generator load) are characterized, all in an attempt to gain insights on the design implication for the single and dual shaft SOFC/GT systems. Dynamic analysis are also performed for part load operation and load transitions, which shed lights for the development of safe and optimal control strategies.

Time Characterization of the Anodic Loop of a Pressurized Solid Oxide Fuel Cell System

2008 ◽  
Vol 130 (2) ◽  
Author(s):  
A. Traverso ◽  
F. Trasino ◽  
L. Magistri ◽  
A. F. Massardo
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Frequency Analysis ◽  
Solid Oxide ◽  
Model Description ◽  
Oxide Fuel ◽  
Realistic Case ◽  
Threshold Frequency ◽  
Fuel Flow ◽  
First Case

A dynamic solid oxide fuel cell (SOFC) model was integrated with other system components (i.e., reformer, anodic off-gas burner, anodic ejector) to build a system model that can simulate the time response of the anode side of an integrated 250kW pressurized SOFC hybrid system. After model description and data on previous validation work, this paper describes the results obtained for the dynamic analysis of the anodic loop, taking into account two different conditions for the fuel flow input: in the first case (I), the fuel flow follows with no delay the value provided by the control system, while in the second case (II), the flow is delayed by a volume between the regulating valve and the anode ejector, this being a more realistic case. The step analysis was used to obtain information about the time scales of the investigated phenomena: such characteristic times were successfully correlated to the results of the subsequent frequency analysis. This is expected to provide useful indications for designing robust anodic loop controllers. In the frequency analysis, most phase values remained in the 0–180deg range, thus showing the expected delay-dominated behavior in the anodic loop response to the input variations in the fuel and current. In Case I, a threshold frequency of 5Hz for the pressure and steam to carbon ratio and a threshold frequency of 31Hz for the anodic flow were obtained. In the more realistic Case II, natural gas pipe delay dominates, and a threshold frequency of 1.2Hz was identified, after which property oscillations start to decrease toward null values.

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