Symmetry in Renewable Energy Power Systems with Integrated Green Hydrogen Conversion System

Dear Colleagues,

The intermittent nature of renewable energy sources (RES), as non-dispatchable power generation units, has resulted in the need for sophisticated energy storage systems. Power-to-Hydrogen (PtH), which involves converting renewable energy surpluses into fuel, storage, and reconversion back to electricity, is a promising pathway to the decarbonization objective. Nevertheless, the interaction between the power grid, electrolyzers, hydrogen storage system, and RES creates a complex system with operational asymmetries. The electrolyzer, fuel cell efficiency, and the hydrogen pressure asymmetry have an impact on the symmetry of the hydrogen conversion system. Additionally, the value chain for renewable hydrogen may also represent economic asymmetries. Moreover, power electronic converters based on RES may create harmonics and other distortions that affect the symmetry of voltage and current waveforms as well as the instability of voltage and frequency. Therefore, understanding and addressing these operational asymmetries is crucial for the successful integration of hydrogen into a renewable energy system, ensuring a reliable, sustainable, and cost-effective energy future.

This Special Issue aims to highlight both theoretical and applied advances in RES-based hydrogen conversion systems by addressing optimal, advanced, and resilient control strategies for enhancing the efficiency and durability of electrolyzers and fuel cells and optimizing the integration of hydrogen systems with RES.

Dr. Nisrine Naseri
Prof. Dr. Ahmed Ihlal
Prof. Dr. Soumia El Hani
Guest Editors

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