ORIGINAL RESEARCH article
Front. Electron.
Sec. Power Electronics
This article is part of the Research TopicEmerging Control of Power Electronic Converters for Electric Machines and Modern Power SystemsView all articles
A Power Coordinated Control Strategy for an Electrically–Hydrogen Coupled DC Microgrid Based on Fuzzy Control and Variable-Parameter Droop
Provisionally accepted
- Guangdong electric power design institute, Guangzhou, China
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ABSTRACT Photovoltaic hydrogen production is a promising approach to improving renewable energy utilization and reducing grid impact. However, integrating hydrogen energy storage into DC microgrids presents significant challenges: pronounced power fluctuations from photovoltaic sources and loads, large variations in hydrogen storage state of hydrogen (SoH), and frequent start–stop cycling of hydrogen equipment triggered by SoH limit violations. To address these issues, this paper proposes a comprehensive power coordinated control strategy for electrically–hydrogen coupled DC microgrids. First, a fuzzy logic algorithm is developed to optimize dynamic power allocation between hydrogen energy storage and lithium battery storage, enabling intelligent adaptation to varying operating conditions. Second, microgrid operating states are classified into normal and extreme conditions based on hydrogen SoH thresholds, providing a basis for differentiated control strategies. Third, a variable-parameter droop control strategy for hydrogen energy storage is introduced, which dynamically regulates the hydrogen tank's SoH and suppresses the rate of SoH movement toward overcharge and overdischarge regions through adaptive control parameters. This hierarchical framework enhances microgrid regulation capability while maintaining system stability. Simulation results obtained in MATLAB/Simulink demonstrate the effectiveness and superiority of the proposed strategy, confirming its applicability to practical electrically–hydrogen coupled DC microgrid implementations.
Keywords: DC microgrid, Droop control, Electrically-hydrogen coupling, Fuzzy Control, Power coordination
Received: 23 Dec 2025; Accepted: 10 Feb 2026.
Copyright: © 2026 Yan. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Wang Yan
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