期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 32, 期 17, 页码 4340-4349出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2007.05.043
关键词
hydrogen; PEM; fuel cell system; electric power train
The aim of this paper was to investigate the behaviour of a 2.4 kW PEM stack in dynamic conditions typical of vehicle applications, including urban driving cycles taken from European legislation. A management strategy of the main fuel cell system auxiliary components was chosen with the scope of minimizing the energy consumptions associated to humidification, cooling and reactant feeding operations. The results obtained provided the definition of a correlation diagram power-temperature, in particular the application of a statistical indicator of the cell voltage uniformity (coefficient of variation C-v) allowed the specification of a reliable working field in terms of stack durability in real applications. The tests effected on European driving cycles R40 and R47 evidenced that stack power increase rates up to 500W/s were acceptable for the fuel cell system used in this paper, while for higher dynamics the stack working regularity was limited by low stoichiometric ratio values (R < 1). However, during fast transient phases (10s as order of magnitude) excursions outside the optimal conditions of power, temperature and R resulted acceptable in terms of C-v (mostly lower than 4%). (c) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据