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• W4290975418 endingPage "32627" @default.
• W4290975418 startingPage "32607" @default.
• W4290975418 abstract "In the state-of-the-art high-power self-humidifying proton exchange membrane fuel cell (PEMFC) systems for vehicles, the high potential and low water production at idle or low load conditions strongly cause corrosion and decay of key materials and thus reduce durability. Therefore, the control technology of system-level durability requires an innovative design. Cathode recirculation is beneficial in alleviating the above unfavorable factors from the perspective of regulating oxygen and vapor partial pressure. This paper presents a pioneering study on the dynamics and control of cathode recirculation in vehicle high-power self-humidifying PEMFC system under low load conditions. First, a control-oriented dynamic model of the vehicle PEMFC system with a cathode recirculation loop is developed and the steady-state and dynamic performance is verified with experimental data from a 120 kW system. Active control of the intake component is achieved by re-feeding the reacted cathode gas to the air compressor outlet through a recirculation pump. On this basis, a high-potential controller based on oxygen partial pressure regulation is designed in combination with the dynamics of cathode recirculation. Results show that the designed dynamic fuzzy logic segmented proportional integral derivative controller with feedforward compensation achieves the optimal high-potential control effect by managing the oxygen partial pressure under variable low load conditions. It not only has excellent anti-disturbance ability but also effectively reduces the dynamic response time, transient overshoot, and steady-state error to satisfy the rapid and stable voltage output. Finally, the concomitant effect of humidification brought by the implementation of the optimal high-potential controller is analyzed, and the results show that the proton membrane is completely humidified." @default.
• W4290975418 created "2022-08-13" @default.
• W4290975418 creator A5014507212 @default.
• W4290975418 creator A5020141096 @default.
• W4290975418 creator A5058603673 @default.
• W4290975418 date "2022-09-01" @default.
• W4290975418 modified "2023-10-17" @default.
• W4290975418 title "High-potential control for durability improvement of the vehicle fuel cell system based on oxygen partial pressure regulation under low-load conditions" @default.
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• W4290975418 doi "https://doi.org/10.1016/j.ijhydene.2022.07.142" @default.
• W4290975418 hasPublicationYear "2022" @default.
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