Research of Oxygen Excess Ratio Control Methods for PEMFC Air Supply Systems

The control problem of its oxygen excess ratio for a proton exchange membrane fuel cell air supply system is addressed. First, a fourth-order nonlinear dynamic model is developed for the control of the PEMFC system; next, feedforward PID, feedforward fuzzy PID and ANFIS controllers are designed to c...

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Bibliographic Details
Main Authors: Liu, Yan, Xiao, Chun, Huang, Min, Song, Fuhao, Chen, Jing
Format: Conference Proceeding
Language:English
Subjects:
Atmospheric modeling
Fluctuations
Fuel cells
Nonlinear dynamical systems
Oxygen excess ratio
PD control
PI control
Proton exchange membrane fuel cell
Protons
Regulation time
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Summary:The control problem of its oxygen excess ratio for a proton exchange membrane fuel cell air supply system is addressed. First, a fourth-order nonlinear dynamic model is developed for the control of the PEMFC system; next, feedforward PID, feedforward fuzzy PID and ANFIS controllers are designed to control the air compressor voltage so that it can track the optimum OER by changing the output flow rate of the air compressor when the fuel cell load current changes. The results indicate that the ANFIS control has the best dynamic performance and no overshoot when the stack load current changes, while the feedforward PID control and feedforward fuzzy PID control have a faster response time, but take longer to reach the optimal OER, and show fluctuations and overshoot. The ANFIS control has the shortest average regulation time, which is 38.4 % and 52.9 % shorter than the feedforward PID control and feedforward fuzzy PID control respectively.
ISSN:2688-0938
DOI:10.1109/CAC59555.2023.10451004