Modeling & Analysis of PEM Fuel Cell System Using Matlab Simulink

Опубликовано: 16 Май 2026
на канале: Dr.M.Sivakumar
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Fuel Cell Technology
1) Modeling & Analysis of PEM Fuel Cell System Using Matlab Simulink
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This example shows Modeling & Analysis of proton exchange membrane (PEM) fuel cell stack system to set up
1) Electrical Load : A) drive cycles, B) step C)Ramp
2)Power Produced & Consumed By The System
3) Plot the fuel cell I V curve, Efficiency & Utilization and Temperature in Fuel Cell system
4) Hydrogen consumed by the fuel cell.
This example shows how to model a proton exchange membrane (PEM) fuel cell stack with a custom Simscape block.
The PEM fuel cell generates electrical power by consuming hydrogen and oxygen and producing water vapor.
The custom block represents the membrane electrode assembly (MEA) and is connected two separate moist air networks:
one for the Anode Gas Flow and
one for the Cathode gas flow.
The two moist air networks represents different gas mixtures.
The anode network consists of nitrogen (N2), water vapor (H2O), and hydrogen (H2), representing the fuel.
The hydrogen is stored in the fuel tank at 70 MPa.
A pressure-reducing valve releases hydrogen to the fuel cell stack at around 0.16 MPa.
Unconsumed hydrogen is recirculated back to the stack.
The cathode network consists of nitrogen (N2), water vapor (H2O), and oxygen (O2), representing air from the environment.
A compressor brings air to the fuel cell stack at a controlled rate to ensure that the fuel cell is not starved of oxygen.
A back pressure relief valve maintains a pressure of around 0.16 MPa in the stack and vents the exhaust to the environment.
The temperature and relative humidity in the fuel cell stack must be maintained at an optimal level to ensure efficient operation under various loading conditions.
Higher temperatures increase thermal efficiency but reduce relative humidity, which causes higher membrane resistance.
Therefore, in this model, the fuel cell stack temperature is kept at 80 degC.
The cooling system circulates coolant between the cells to absorb heat and rejects it to the environment via the radiator.
The humidifers saturate the gas with water vapor to keep the membrane hydrated and minimize electrical resistance.
This plot shows the current-voltage (I-V) curve of a fuel cell in the stack.
As the current ramps up, an initial drop in voltage occurs due to electrode activation losses, followed by a gradual decrease in voltage due to Ohmic resistances.
Near maximum current, a sharp drop in voltage occurs due to gas-transport-related losses.
This plot also shows the power produced by the cell.
When the ramp scenario is selected, the power increases until a maximum power output, then decreases due to the high losses near maximum current.
Click here to download the Simulink files:
2021a version:
https://shrinke.me/2DPVg
2020a version:
https://shrinke.me/csHTZM
2019a version:
https://shrinke.me/Thbk1
2018a version:
https://shrinke.me/8hqKeaC
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