Effective schemes to control the dynamic behavior of the water transport in the membrane of PEM fuel cell
Resource
Journal of Power Sources 140 (2): 243-249
Journal
Journal of Power Sources
Journal Volume
140
Journal Issue
2
Pages
243-249
Date Issued
2005-05
Date
2005-05
Author(s)
Abstract
We have investigated the transient behavior of the water transport across the membrane of the PEM fuel cell to seek for effective control schemes so that the best dynamic performance of the fuel cell can be obtained. It is found that both a larger starting operational current density i0 and a smaller operational current density i can lead to a smaller dynamic response time t ss, the time for the water distribution across the membrane to reach the steady state. Present results nevertheless point out that the most powerful as well as the most feasible control scheme is to control the humidification parameter k, i.e. to adjust the water content of the feeding fuel, so that the tss would remain steadily in a reasonably low value in a wide range of water flux fraction β, another control parameter of the membrane. The present conclusion can be useful for the design of the PEM fuel cell when its application on the dynamic mobile system is concerned. © 2004 Elsevier B.V. All rights reserved.
Subjects
Dynamic response time; Membrane; PEM fuel cell; Transient behavior; Water management
SDGs
Other Subjects
Concentration (process); Current density; Diffusion; Dynamic response; Electric conductivity; Electrochemistry; Fluxes; Hydration; Membranes; Osmosis; Parameter estimation; Transport properties; Voltage control; Water; Dynamic response time; PEM fuel cell; Transient behavior; Water management; Fuel cells
Type
journal article
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