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A Guide to Concentration Alternating Frequency Response Analysis of Fuel Cells
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Performance improvement in polymer electrolytic membrane fuel cell based on nonlinear control strategies-A
Usman Javaid1, Jamshed Iqbal2, Adeel Mehmood1
1Department of Electrical and Computer Engineering, COMSATS University Islamabad, Islamabad, Pakistan.
Plos One
|February 25, 2022
Summary
This study introduces advanced controllers for Polymer Electrolytic Membrane Fuel Cells (PEMFCs) to enhance efficiency and lifespan. Fast Terminal Integral Sliding Mode Control (FTISMC) significantly improves performance and stability in fuel cell air delivery systems.
Area of Science:
- Electrochemical Engineering
- Control Systems
- Automotive Power Systems
Background:
- Polymer Electrolytic Membrane Fuel Cells (PEMFCs) are crucial for automotive applications, but their performance relies heavily on the air delivery system.
- Effective regulation of the Oxygen Excess Ratio (OER) is vital for maintaining PEMFC efficiency and longevity, preventing issues like oxygen starvation.
Purpose of the Study:
- To propose and evaluate two novel nonlinear control strategies: Integral Sliding Mode Control (ISMC) and Fast Terminal ISMC (FTISMC).
- To demonstrate the capability of these controllers in maintaining a constant OER under dynamic load conditions and mitigating oxygen starvation.
Main Methods:
- Design and implementation of ISMC and FTISMC controllers within the MATLAB/Simulink environment.
- Simulation-based analysis comparing the performance of FTISMC and ISMC against the Super Twisting Algorithm (STA).
Main Results:
- FTISMC exhibits superior tracking performance and reduced fluctuations in key parameters like net power, stack voltage/power, error tracking, OER, and compressor motor voltage.
- ISMC and FTISMC demonstrate significant performance improvements over STA, with gains of 7% and 20%, respectively.
- Reduced parameter fluctuations indicate enhanced PEMFC efficiency and extended operational lifespan.
Conclusions:
- The proposed FTISMC and ISMC controllers offer robust and efficient solutions for regulating OER in PEMFC air delivery systems.
- These advanced control strategies contribute to improved PEMFC efficiency and durability, making them highly suitable for hydrogen-powered fuel cell electric vehicles.
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