Control of oxygen excess ratio in a PEM fuel cell system using high-order sliding-mode controller and observer

Rakhtala, Seyed Mehdi; Noei, Abolfazl Ranjbar; Ghaderi, Reza; Usai, Elio

Abstract

The main objective of this manuscript is to design a high-order sliding-mode observer to provide finite time estimation of unmeasurable states (x4 : oxygen mass, x5 : nitrogen mass) together with the oxygen excess ratio (ratio of the input oxygen ow to the reacted oxygen ow in the cathode). This is done by applying second-order sliding modes through either super twisting or suboptimal controllers to control the proton exchange membrane fuel cell's breathing. The estimated oxygen excess ratio is controlled in a closed-loop system using 2 distinct sliding-mode approaches: a cascaded super twisting controller and a single-loop suboptimal structure. Simulation results are presented to make a quantitative comparison between the cascade and the single-loop configuration. The results verify that the cascade provides accurate reference tracking while the single-loop presents faster convergence.

• Journal Article Type: Article
• Acceptance Date: Apr 8, 2013
• Online Publication Date: Jan 21, 2015
• Publication Date: Feb 9, 2015
• Deposit Date: Aug 15, 2023
• Publicly Available Date: Aug 16, 2023
• Journal: Turkish Journal of Electrical Engineering and Computer Sciences
• Print ISSN: 1300-0632
• Electronic ISSN: 1303-6203
• Peer Reviewed: Peer Reviewed
• Volume: 23
• Issue: 1
• Article Number: 18
• Pages: 255-278
• DOI: https://doi.org/10.3906/elk-1301-90
• Public URL: https://uwe-repository.worktribe.com/output/11001530