Applied Research, System Modeling And Simulation For Pemfc

Proton exchange membrane fuel cell(PEMFC) has many merits such as working in low temperature, being convenient to maintain, low-noise when operated and able to realize no exhaust. These advantages make it nowadays the most widely studied and fastest developed in fuel cell research. In order to provide fundamental and reasonable principle for designing, optimizing and controlling fuel cell, modeling and simulating PEMFC must be conducted. The study related to it has become one of the most advanced one in the field of PEMFC research.This paper, in the view of system engineering, laying the foundation on the analysis of function and characteristic of every part of PEMFC, models the PEMFC as a whole. It puts the emphasis on the relationship between the input as pressure, temperature, etc. and output of phsical varibles. In simulation, this paper makes use of the most popular scientific software, MATLAB and develops the corresponding simulating system with the SIMULINK in it.This paper firstly gives a brief overview of the operating principle of fuel cell, function and characterisitic of each important element, and based on it, a general introduction to mathematical model study of PEMFC. And then taking the whole fuel cell unit as a subject, builds up the PEMFC unit empirical model, combining certain thermodynamic theory as mass transfer, diathermancy, etc. In addition, the experimental parameters are defined according to the known data.After that, simulating model is set up on the foundation of the empirical model mentioned above by using the SIMULINK software package in MATLAB and simulating is conducted in PEMFC. The result compared well with the published one. This paper also lays special emphsis to analyze the influence of PEMFC working temperature, input reaction gas from anode and cathod on characteristic of PEMFC.Besides, in order to easily manipulate, man-computer interface is also compiled with software of GUI under the circumstance of MATLAB.