Simulation and Control for Load Change Process on a Solid Oxide Fuel Cell

Dung Di Yu; Mao Hsiung Chiang

doi:10.4028/www.scientific.net/AMM.284-287.925

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 284-287Simulation and Control for Load Change Process on...

Simulation and Control for Load Change Process on a Solid Oxide Fuel Cell

Abstract:

This paper addresses the dynamic characteristics of SOFC with an emphasis on control strategy development for optimized temperature control during load change. A methodology on regulating fuel utilization (Uf) and air excess ratio (λ) is investigated to validate alleviation of temperature fluctuation. An integrated dynamic model of SOFC, composed of mass balance, temperature balance, and electrochemistry, collaborates with Model Predictive Controller (MPC) in MATLAB/Simulink to verify the dynamic characteristic during load change process in the paper. A variable λ strategy is proposed and compared with traditional fixed λ strategy. Simulation results show the variable λ strategy can reduce the temperature variation for a safe operation, in comparison with that by the fixed λ strategy.

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Periodical:

Applied Mechanics and Materials (Volumes 284-287)

Pages:

925-929

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.284-287.925

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Online since:

January 2013

Authors:

Dung Di Yu, Mao Hsiung Chiang

Keywords:

Air Excess Ratio, Fuel Utilization, Model Predictive Control (MPC), Solid Oxide Fuel Cell (SOFC)

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