Dynamic behaviour and control strategy of high temperature proton exchange membrane electrolyzer cells (HT-PEMECs) for hydrogen production |
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| Affiliation: | 1. School of Artificial Intelligence and Automation, Key Laboratory of Image Processing and Intelligent Control of Education Ministry, Huazhong University of Science and Technology, Wuhan, Hubei, China;2. Building Energy Research Group, Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;1. Department of Renewable Energy, Centro de Investigación Científica de Yucatán (CICY), Yucatán, Mexico;2. Cátedras CONACYT, Ciudad de México, Mexico;3. Université de Lorraine, GREEN, F-54000 Nancy, France;4. Facultad de Ingeniería, Universidad Autónoma Del Estado de México (UAEM), Toluca, Mexico;1. Key Laboratory of Power Station Energy Transfer Conversion and System of MOE, School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China;2. Tianjin Key Lab of Refrigeration Technology, Tianjin University of Commerce, Tianjin, 300134, China;3. Institute of Science and Technology, China Three Gorges Corporation, Beijing, 100038, China;1. Department of Mechanical Engineering, Faculty of Engineering, University of Isfahan, Hezar-Jerib Ave., Isfahan, 81746-73441, Iran;2. CORIA-UMR 6614, Normandie University, CNRS-University & INSA, 76000 Rouen, France;3. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam;4. Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam |
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| Abstract: | A fast and safe dynamic process is a key issue during the start-stop and adjustment of high temperature proton exchange membrane electrolyzer cells (HT-PEMECs). In the paper, a 2D multi-physics model is developed to investigate the dynamic process in an HT-PEMEC. First, the dynamic responses of step scheme, multistep scheme and diagonal scheme are compared. It is found that the step scheme has the fastest dynamic response, but it may cause the problem of reactant starvation. The dynamic response speed of diagonal scheme is slower than the step scheme, but it can prevent the problem of reactant starvation. Subsequently, the dynamic process is optimized with a fast dynamic response without reactant starvation. This paper proposes a fast and safe dynamic process adjustment scheme and forms a basis for subsequent control of the HT-PEMEC stack and system. |
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| Keywords: | Hydrogen production Electrolysis Proton exchange membrane electrolyzer cell Numerical modelling Dynamic response Optimization problem |
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