ARTICLE TITLE : Modelling, dynamics and control of a portable DMFC system
Publication year: 2010
Source: Journal of Process Control, In Press, Corrected Proof, Available online 13 April 2010</br>
Federico, Zenith , Ulrike, Krewer</br>
A dynamic model for a direct methanol fuel cell and its ancillary units is presented, in which all ancillary units perform only one operation each. The system’s losses and main dynamics (cathodic oxygen fraction, anodic methanol concentration, stack temperature, system water holdup) are analysed for stability and time constants. The system is found to be stable in all of its dynamics except for that of water holdup. The influence of external conditions, such as temperature and humidity, on system feasibility is analysed; the capability of system autonomous operation depends essentially on environmental conditions and on the chosen air excess ratio....</br>


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