In hydrogen production bases,the coordinated control of multiple parallel alkaline water electrolyzers (AWEs) to jointlyparticipate in the regulation of renewable energy is a major trend in the future. However,renewable energy sources that fluctuate over timecan have an impact on the temperatures of alkaline water electrolyzers,which in turn leads to changes in their rated power. In such asituation,if the droop controller with a constant droop coefficient is continuously used,it may result in an unreasonable powerdistribution among alkaline water electrolyzers. This issue has seldom been considered in the existing literature. To fill this gap,this paperproposes an adaptive power coordination control method for the hydrogen production system with multiple parallel alkaline waterelectrolyzers. Firstly,an equivalent circuit model of alkaline water electrolyzers is established,and the maximum current-temperaturecurve is plotted. On this basis,a temperature-driven droop control strategy is proposed. The control system will periodically update themodel of alkaline water electrolyzers and calculate the droop coefficient in real time by combining with their temperatures. Then,theimpact of the proposed control strategy on the thermodynamic characteristics of alkaline water electrolyzers is analyzed. Finally,theproposed control strategy is verified on the built electrolytic hydrogen production experimental platform. The experimental results showthat the proposed method can achieve a reasonable power distribution among different alkaline water electrolyzers.

夏杨红(),性别男,湖北武汉人,教授。E-mail:royxiayh@126.com

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LI Limin,SHENTU Leixuan,XIA Yanghong,et al. Adaptive coordination control strategy for large-scale alkaline waterelectrolysis hydrogen production system[J].Clean Coal Technology,2025,31(3):83−93.