GROUP ROTATION STRATEGY OF WIND-HYDROGEN-STORAGE SYSTEM HYBRID ELECTROLYZER CONSIDERING FUZZY PIECEWISE POWER CONTROL

Ju Wanhui; Ren Yongfeng; Yun Pingping; He Bin; Mi Yue; Chen Junqing

doi:10.19912/j.0254-0096.tynxb.2024-2093

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (3) : 222-233. DOI: 10.19912/j.0254-0096.tynxb.2024-2093

GROUP ROTATION STRATEGY OF WIND-HYDROGEN-STORAGE SYSTEM HYBRID ELECTROLYZER CONSIDERING FUZZY PIECEWISE POWER CONTROL

Ju Wanhui¹, Ren Yongfeng¹, Yun Pingping², He Bin¹, Mi Yue², Chen Junqing²

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Abstract

To address the issues of unreasonable power distribution in tdistributed wind power hydrogen production systems, which leads to frequent switching between different states. This paper proposes a group rotation strategy of the hydrogen production by wind power system hybrid electrolyzer based on fuzzy piecewise power control, which realizes reasonable power distribution between groups within the hybrid electrolyzer system through fuzzy controllers. Firstly, a mathematical model for a hybrid electrolyzer was developed, incorporating the operational characteristics of alkaline electrolyzer and proton exchange membrane electrolyzer. The hybrid electrolyzer was stabilized by direct power control and supplemental power control strategies. Secondly, the mixed integer piecewise model algorithm based on power intervals was used to ensure array's coordinated control capability. Simultaneously introducing a grid-forming energy storage system to improve the dynamic coupling of hydrogen production by wind power system at multiple time scales, while also ensuring the safe and reliable operation of the hybrid electrolytic cell array. Finally, a simulation model of the hydrogen production by wind power system based on hybrid electrolyzer was constructed. Compared with the simple time averaged control strategy, the results show that the proposed rotation strategy can achieve balanced switching frequency and operating time of the hybrid electrolyzer system, rational allocation of power, and improve the overall hydrogen production efficiency of hydrogen production by wind power system comprehensively.

Key words

hydrogen production / wind power generation / coordinate control strategy / fuzzy control / electrolyzer / grid-forming energy storage

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Ju Wanhui, Ren Yongfeng, Yun Pingping, He Bin, Mi Yue, Chen Junqing. GROUP ROTATION STRATEGY OF WIND-HYDROGEN-STORAGE SYSTEM HYBRID ELECTROLYZER CONSIDERING FUZZY PIECEWISE POWER CONTROL[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 222-233 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2093

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