FUEL CELL VOLTAGE CONTROL STRATEGY WITH OPTIMAL EFFICIENCY TRACKING

Shi Yong; Jin Haorui; Xie Di; Wang Liangliang; Yao Jigang

doi:10.19912/j.0254-0096.tynxb.2024-2140

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (5) : 524-531. DOI: 10.19912/j.0254-0096.tynxb.2024-2140

FUEL CELL VOLTAGE CONTROL STRATEGY WITH OPTIMAL EFFICIENCY TRACKING

Shi Yong¹, Jin Haorui¹, Xie Di², Wang Liangliang², Yao Jigang²

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Abstract

This paper compares the impacts of the voltage and current control modes of the fuel cell power generation system on the operating state of the fuel cell. Combined with the requirements for optimizing the efficiency of the fuel cell system, a voltage control mode that can achieve optimal efficiency tracking is proposed. Meanwhile, it solves the problems of accelerated aging when the fuel cell operates in the concentration polarization region and the excessive complexity of the traditional maximum efficiency optimization algorithm. Through simulation analysis, it is verified that the control method under the constant voltage mode can automatically adjust the oxygen excess ratio according to the real-time changes in the required net power of the PEMFC system. Moreover, under the working conditions with large dynamic changes in the load current, it can meet the performance index requirements of the optimal efficiency and improve the operating efficiency and stability of the system.

Key words

proton exchange membrane fuel cell / voltage control / DC-DC converters / optimal efficiency control / concentration polarization region

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Shi Yong, Jin Haorui, Xie Di, Wang Liangliang, Yao Jigang. FUEL CELL VOLTAGE CONTROL STRATEGY WITH OPTIMAL EFFICIENCY TRACKING[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 524-531 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2140

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