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| Modeling of fuel cell system and control method of air supply system |
| HAN Aiguo, SONG Fuhao, TIAN Shaopeng, ZHANG Chunrui |
(School of Automotive Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China)
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Abstract To investigate the characteristics of fuel cell systems and the influence of air systems on fuel cell characteristics, Simulink simulation software was used to model the fuel cell system with voltage model, air compressor model, cathode model and anode model. The fuel cell air system was controlled respectively through proportional-integral-differential (PID) and fuzzy PID. The results show that when the load current changes, both the feedforward PID and fuzzy PID can make the oxygen excess ratio reach the set constant value of 2.0. However, the fuzzy PID responds faster than the feedforward PID, and the output power of the fuel cell under fuzzy PID control fluctuates less, which makes the fuel cell system more stable.
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Received: 01 April 2022
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