A novel adaptive fast sliding mode control method based on fuzzy algorithm for the air management system of fuel cell stack

• Published in: Process safety and environmental protection 2024-07, Vol.187, p.506-517
• Main Authors: Fang, Shiyi, Zhang, Rongrong, Maltsev, Sergey, Chen, Daifen, Fan, Xinyu, Levtsev, Aleksey
• Format: Article
• Language: English
• Subjects: Decarbonized power system; Fuel cell stack; Fuzzy algorithm; Hydrogen energy; Oxygen excess ratio; Sliding mode control
• ISSN: 0957-5820; 1744-3598
• DOI: 10.1016/j.psep.2024.04.088

Proton exchange membrane fuel cells (PEMFCs) offer advantages, such as, cleanliness, high efficiency, and environmental friendliness. To achieve optimal control of the PEMFC stack's air supply and management system under complex operating conditions, a novel non-singular terminal sliding mode controller based on fuzzy algorithm is proposed. Compared with the conventional sliding mode control, the terminal sliding mode control exhibits further performance improvements. However, it still has limitations. The proposed innovative sliding mode structure would ensure finite-time convergence and avoid the issue of singularity associated with terminal sliding mode control. Moreover, fuzzy logic makes sliding mode gain adapt to the system and further enhances the performance and stability, which is benefited from a stronger sliding surface. Results indicate that, compared with the other controllers, the designed controller could reduce delay further and provide faster response to sudden changes. The overshoot of sliding surface has decreased by 70% compared to its previous level. This novel control approach significantly enhances the efficiency and reliability of the PEMFC system.