Modeling and simulation of PEM fuel cell based power supply and its control

This paper deals with the design, analysis, modeling and control of fuel cell based distributed generation system. This paper presents the modeling and control of a PEMFC DG system with real and reactive power controll. The output of the fuel cell stack is connected to the DC side of the voltage source inverter, for desired AC power. .The active power transfer is based on the phase angle of the output voltage and reactive power management is based on magnitude of this voltage. The entire system is modeled in MATLAB/Simulink environment and simulations are carried out to verify the operation and the control principle. The simulation results demonstrate that this model could describe the steady state behavior and predict the transient response of cell voltage, temperature of the cell and pressures of cathode and anode channel under sudden changes in load current. Various simulation results are presented for the proposed fuel cell based power supply.