期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 37, 期 21, 页码 16591-16603出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.02.179
关键词
Solar-hydrogen production; Water electrolysis; Automation and integrated control; Stand-alone operation; Model-based power management strategy
资金
- European LIFE+ Program [LIFE08 ENV/GR/000569]
An autonomous power system that exploits solar energy for the production of hydrogen through water electrolysis is fully assessed in terms of system implementation and optimal operating strategy. A 10 kW(p) photovoltaic array supplies energy to a PEM electrolyzer rated at 6.9 kW(p). In order to maintain a smooth operation regardless of the inherent weather fluctuations, a 1000 Ah/24 V lead-acid accumulator stores energy excess and provides it when needed. The monitoring and control of the system is implemented through a Supervisory Control and Data Acquisition system (SCADA), while the interactions between electrical and chemical subsystems are addressed by a complete automation infrastructure. The mathematical models of each subsystem are validated based on real operational data and a model-based power management strategy is proposed and assessed through a parameter sensitivity analysis. Further on, an off-line optimization framework is evaluated regarding the optimal operation of the system in two diverse, but representative time periods. The optimal parameters are identified and their effect on hydrogen production and accumulator utilization is reported. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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