Modeling & Analysis of PEM Fuel Cell System Using Matlab Simulink

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://drive.google.com/file/d/1XTnG4zOll1MR58gy_GU7F0K60uUBPCOh/view?usp=sharing

2020a version: https://drive.google.com/file/d/1VigTbfawAmigpxoK5eAka8gx-GU_UBN6/view?usp=sharing

2019a version: https://drive.google.com/file/d/1eGiWLTkdz0lS-o2odx1D8OCXRcOQuEMM/view?usp=sharing

2018a version: https://drive.google.com/file/d/1GReipArHs_fhwCMPjfkIm1AuS1BNTs6Y/view?usp=sharing Kindly Subscribe My YouTube Channel... Please like, share and worthy comments on My Videos 🙏 Please click the below links to Subscribe/Join & View my Videos https: //www.youtube.com/c/DrMSivakumar Telegram : t.me/Dr_MSivakumar website : drmsivakumar78.blogspot.com