DYNAMIC COORDINATED CONTROL BASED ON EFFICIENCY OF PV-STORAGE-HYDROGEN DC MICROGRID

Zheng Shicheng; Liu Xu; Zhou Songlin; Yang Zhijun

doi:10.19912/j.0254-0096.tynxb.2024-2367

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (5) : 81-90. DOI: 10.19912/j.0254-0096.tynxb.2024-2367

DYNAMIC COORDINATED CONTROL BASED ON EFFICIENCY OF PV-STORAGE-HYDROGEN DC MICROGRID

Zheng Shicheng¹, Liu Xu¹, Zhou Songlin², Yang Zhijun¹

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Abstract

To address the issues of improving electricity utilization and hydrogen production stability in photovoltaic hydrogen production systems, a dynamic coordination control strategy based on maximum efficiency point tracking is proposed, considering both the advantages of direct coupling for high electricity utilization and indirect coupling for flexibility and control. First, photovoltaic power generation models, electrolysis hydrogen production efficiency models, and battery voltage regulation models are established. In off-grid mode, the particle swarm optimization algorithm and sliding mode control are used to achieve maximum efficiency point tracking for the electrolyzer. Then, based on the maximum output power of the photovoltaic system and the battery's state of charge, dynamic coordination control optimization of the photovoltaic hydrogen production system is performed. Finally, the algorithm is validated through simulations. The results show that the proposed method can flexibly switch between five different operating conditions by evaluating the maximum output power of the photovoltaic system and the battery's state of charge. It can also track the maximum efficiency point in real-time when the operating temperature changes, thus improving the system's energy conversion efficiency and reducing current ripple.

Key words

photovoltaic / hydrogen production / particle swarm optimization / maximum efficiency point / sliding mode variable structure controlc / coordinated control

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Zheng Shicheng, Liu Xu, Zhou Songlin, Yang Zhijun. DYNAMIC COORDINATED CONTROL BASED ON EFFICIENCY OF PV-STORAGE-HYDROGEN DC MICROGRID[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 81-90 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2367

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