RESEARCH ON PARALLEL SCHEME OF HYDROGEN PRODUCTION FROM ELECTROLYTIC WATER BASED ON RENEWABLE ENERGY GENERATION

Zhang Xiaowei; Su Xingyu; Zhou Jinghua; Meng Xiangfei

doi:10.19912/j.0254-0096.tynxb.2023-1393

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (1) : 353-362. DOI: 10.19912/j.0254-0096.tynxb.2023-1393

RESEARCH ON PARALLEL SCHEME OF HYDROGEN PRODUCTION FROM ELECTROLYTIC WATER BASED ON RENEWABLE ENERGY GENERATION

Zhang Xiaowei¹, Su Xingyu¹, Zhou Jinghua¹, Meng Xiangfei²

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Abstract

Hydrogen production from electrolytic water based on renewable energy generation is an important way to achieve 100% consumption of renewable energy and preparation of green hydrogen. As the intermediate link between renewable energy generation bus and proton exchange membrane electrolyzer, a single hydrogen production power supply has a low power level and cannot achieve large-scale consumption of renewable energy and high power hydrogen production. Therefore, the modular parallel method of hydrogen production power supply needs to be adopted, but the problem of current imbalance between modules exists in the modular parallel. In order to solve the problem of current imbalance, a parallel scheme of hydrogen production power supply based on three-phase staggered parallel LLC structure is proposed. Firstly, multiple parallel equivalent circuits of hydrogen production power supply are derived. From the point of impedance, it is found that the difference of resonant parameters between modules is the main reason for the current imbalance. Then, the virtual impedance is used to adjust the equivalent impedance, so that the current is balanced between modules. Finally, a simulation model and two 6 kW modular experimental prototypes are built to verify the rationality and feasibility of the proposed parallel scheme.

Key words

renewable energy generation / hydrogen production from electrolytic water / parallel scheme of hydrogen production power supply / difference of resonant parameters / virtual impedance

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Zhang Xiaowei, Su Xingyu, Zhou Jinghua, Meng Xiangfei. RESEARCH ON PARALLEL SCHEME OF HYDROGEN PRODUCTION FROM ELECTROLYTIC WATER BASED ON RENEWABLE ENERGY GENERATION[J]. Acta Energiae Solaris Sinica. 2025, 46(1): 353-362 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1393

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