Corresponding Author

Qiu-hong JIA(jqh.01@163.com)


Based on the equivalent circuit model, by considering both the dynamic gas pressure model and the dynamic heat transfer model, a lumped parameter model is developed. The start process of the fuel cell is simulated by using SIMULINK software. The undershoot of the voltage is observed from the simulation results, and the response time of the voltage is basically the same as that of the fuel cell temperature, which indicates that the temperature has great influence on the dynamic performance of the fuel cell. From the perspective of the temperature, the dynamic responses of the thermodynamic potential, the activation overvoltage, the ohmic overvoltage and the concentration overvoltage of the fuel cell iare analyzed. It is found that the overshoot of the activation overvoltage and the ohmic overvoltage cause the voltage undershoot. When the temperature is input in the form of a step signal, the output voltage response of the fuel cell is fast, and thus, undershoot and overshoot do not occur. Therefore, it can improve the dynamic performance of the fuel cell with the increasing of temperature response speed.

Graphical Abstract


proton exchange membrane fuel cell, dynamic modeling, undershoot, temperature, dynamic, performance analysis

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