The model of hydrogen system of high-power fuel cell engine is designed, the core components and control system of hydrogen system are modeled and simulated in MATLAB/Simulink platform. Based on the hydrogen system model, the CLTCP and NEDC common driving conditions are simulated on dynamic. The results showed that the anode working pressure requirements could be guaranteed by the inlet pressure, and the pressure difference between cathode and anode was maintained in 0.02 MPa. The hydrogen utilization rate of the two conditions were 99.67 % and 99.76 % respectively. That means the model can be used in the development of high-power vehicle PEMFC system.

Proton Exchange Membrane Fuel Cell (PEMFC)  /  Hydrogen supply system  /  Ejector  /  Hydrogen circulation pump  /  Hydrogen utilization