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Control System for Sensing the Differential Pressure Between Air and Hydrogen in a PEFC
Technical Paper
2012-01-1228
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Stress induced by an excessive difference in pressure between the air and the hydrogen in polymer electrolyte fuel cells degrades membrane durability. Controlling such stress improves the durability and solves one of the problems hampering commercialization of fuel cell electric vehicles. Hydrogen pressure can be raised more rapidly than the air pressure by regulating the pressure of the high-pressure hydrogen storage tank. However, the response for reducing the hydrogen pressure varies depending on the level of current generation. The air pressure can be reduced rapidly by releasing air, whereas it takes longer to raise the air pressure owing to compression of the air taken in from the atmosphere. The method proposed here for designing the control system of the air pressure and mass flow rate assumes that the system is based on the use of a mathematical model, whereas the hydrogen pressure control system does not employ a mathematical model and treats the consumption of hydrogen during power generation as a disturbance. The air pressure is predicted using transfer functions and the hydrogen pressure is made to follow the predicted value. In addition, the air pressure is made to follow the larger of either the reference pressure or the hydrogen pressure. This paper first describes the application of a sliding mode control theory for controlling the air pressure and flow control system using the mathematical model. It then explains the configuration of the control system for sensing the differential pressure within a specified range. Experimental results are finally presented to validate the control performance achieved with the proposed design method.
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Authors
Citation
Asai, Y., "Control System for Sensing the Differential Pressure Between Air and Hydrogen in a PEFC," SAE Technical Paper 2012-01-1228, 2012, https://doi.org/10.4271/2012-01-1228.Also In
References
- Working Groups of the IPCC “Chimate Change 2007 -Synthesis Report,” http://www.ipcc.ch 2007
- Yoshitomo, A. Nobutaka, T. “Control of Differential Air and Hydrogen Pressures in Fuel Cell Systems,” Journal of System Design and Dynamics 5 1 109 124 2011 10.1299/jsdd.5.109
- Yoshitomo, A. Nobutaka, T. “Two-Variable and Two-Degree-of-Freedom Sliding Mode Control for Air Pressure and Flow in a Fuel Cell System,” Journal of System Design and Dynamics 4 5 683 697 2010 10.1299/jsdd.4.683
- Jay, T. P. Anna, G. S. Huei, P. “Control of Fuel Cell Power Systems,” Springer 13-9781852338169 2004
- Chan-Chiao, L. Min-Joong, K. Huei, P. Jessy, W. G. “System-Level Model and Stochastic Optimal Control for a PEM Fuel Cell Hybrid Vehicle,” ASME Journal of Dynamic Systems, Measurement and Control 128 4 878 890 2006
- Reuter, J. Beister, U. Liu, N. Reuter, D. et al. “Control of a Fuel Cell Air Supply Module (ASM),” SAE Technical Paper 2004-01-1009 2004 10.4271/2004-01-1009
- Michael, A. D. Jorg, W. W. Harald, A. Eberhard, P. H. “Model-based control of cathode pressure and oxygen excess ratio of a PEM fuel cell system,” Journal of Power Sources 176 2 515 522 2008 10.1016/j.jpowsour.2007.08.049
- Fu-Cheng, W. Yee-Pien, Y. Chi-Wei, H. Hsin-Ping, C. Hsuan-Tsung, C. “System identification and robust control of a portable proton exchange membrane fuel-cell system,” Journal of Power Sources 164 2 704 712 2007 10.1016/j.jpowsour.2006.11.040