CONTROL OF CATHODE RELATIVE HUMIDITY AND OXYGEN EXCESS RATIO IN PEMFC SYSTEM BASED ON ADRC

Xiao Yanggan; Wu Xiaolong; Li Xi

doi:10.19912/j.0254-0096.tynxb.2023-0853

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 499-509. DOI: 10.19912/j.0254-0096.tynxb.2023-0853

CONTROL OF CATHODE RELATIVE HUMIDITY AND OXYGEN EXCESS RATIO IN PEMFC SYSTEM BASED ON ADRC

Xiao Yanggan¹, Wu Xiaolong¹, Li Xi²

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Abstract

To address the shortcomings of traditional PID control methods in handling the tracking process of cathode relative humidity and oxygen excess ratio in Proton Exchange Membrane Fuel Cell （PEMFC） systems, such as slow response and significant oscillations, leading to performance and efficiency issues, a PEMFC system model based on membrane hydration, gas flow rate, Nernst voltage, and other operational mechanisms is constructed. In this context, a PEMFC system Active Disturbance Rejection Control （ADRC） method is proposed, which includes linear feedback characteristics and has overshoot suppression capability. Control parameter configurations are also provided. The results demonstrate that the implementation of the ADRC control method achieves low deviation and fast tracking control of the cathode relative humidity and oxygen excess ratio in the PEMFC system. This method is helpful to improve the control performance of fast tracking and overshoot suppression under large load change disturbance, and has a good application prospect.

Key words

proton exchange membrane fuel cells （PEMFC） / disturbance rejection / systems analysis / cathode relative humidity / oxygen excess ratio

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Xiao Yanggan, Wu Xiaolong, Li Xi. CONTROL OF CATHODE RELATIVE HUMIDITY AND OXYGEN EXCESS RATIO IN PEMFC SYSTEM BASED ON ADRC[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 499-509 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0853

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