文章基本信息

标题：H 2 purity control of high-pressure alkaline electrolyzers
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作者：Martín David ; Fernando Bianchi ; Carlos Ocampo-Martinez 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2021
卷号：54
期号：3
页码：109-114
DOI：10.1016/j.ifacol.2021.08.227
语种：English
出版社：Elsevier
摘要：AbstractThis paper proposes a control strategy that mitigates the cross contamination of H2and O2in a high-pressure alkaline electrolyzer, which consequently increases the supplied gases purity. In order to reduce the diffusion of gases through the membrane, the controller establishes the opening of two outlet valves based on the pressure of the system and the difference in liquid level between both separation chambers. Therefore, a multiple input - multiple output optimal controller is designed here. For this purpose, an available high-fidelity model was simplified in order to obtain a control-oriented model. The proposed controller was evaluated in simulation using the high-fidelity nonlinear model in a wide operating range and was compared with a pair of decoupled PI controllers. The resulting impurity of gases was below 1% in all cases.
关键词：KeywordsHydrogenalkaline electrolysisH2puritymultivariable control