Stand-alone PEM water electrolysis system for fail safe operation with a renewable energy source
Stand-alone PEM water electrolysis system for fail safe operation with a renewable energy source
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DOI：
10.1016/j.ijhydene.2009.11.100
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发表时间：
2010-02-01
影响因子：
7.2
通讯作者：
Badwal, S. P. S.
中科院分区：
文献类型：
--
作者：
Clarke, R. E.;Giddey, S.;Badwal, S. P. S.
已经建造了一个完整的独立电解槽系统，作为一个可运输的单元，用于示范以氢和可再生能源为基础的可持续能源设施。该独立单元旨在支持聚合物电解质膜(PEM)电堆，其输入功率最高可达4千瓦，基于氢气的HHV，电堆效率约为80%。它是自增压的，最初打算在膜电极组件两端的压差小于6bar的情况下运行，而产氢侧处于较高的压力。由于电堆稍小，该系统已在一个非现场设施中运行，在那里它直接连接到一个2.4千瓦的光伏(PV)太阳能电池板。由于其在偏远地区的潜在用途，工厂的平衡运行完全在12 V直流电源上运行，以满足所有监控、控制和安全要求。它使用单独的高电流电源作为主电解槽输入，通常为30-40V，100A，来自可再生能源，如太阳能光伏或风能。该系统具有多个级别的内置操作员和堆栈安全冗余。控制和安全系统监控所有重要的流量、水平和温度。所有故障条件都是故障安全的，并且是重复的，触发闭锁继电器，从而关闭系统。过程指示器监控几个关键变量，并允许根据现场获得的系统性能经验轻松调整操作限制。(C)2009年由爱思唯尔有限公司代表T.Nejat Veziroglu教授出版。
A complete stand-alone electrolyser system has been constructed as a transportable unit for demonstration of a sustainable energy facility based on hydrogen and a renewable energy source. The stand-alone unit is designed to support a polymer electrolyte membrane (PEM) stack operating at up to similar to 4 kW input power with a stack efficiency of about 80% based on HHV of hydrogen. it is self-pressurizing and intended for operation initially at a differential pressure of less than 6 bar across the membrane electrode assembly with the hydrogen generation side being at a higher pressure. With a slightly smaller stack, the system has been operated at an off-site facility where it was directly coupled to a 2.4 kW photovoltaic (PV) solar array. Because of its potential use in remote areas, the balance-of-plant operates entirely on 12 V DC power for all monitoring, control and safety requirements. It utilises a separate high-current supply as the main electrolyser input, typically 30-40 V at 100 A from a renewable source such as solar PV or wind. The system has multiple levels of built-in operator and stack safety redundancy. Control and safety systems monitor all flows, levels and temperatures of significance. All fault conditions are failsafe and are duplicated, triggering latching relays which shut the system down. Process indicators monitor several key variables and allow operating limits to be easily adjusted in response to experience of system performance gained in the field. (C) 2009 Published by Elsevier Ltd on behalf of Professor T. Nejat Veziroglu.