Research on voltage ride-through of photovoltaic grid-connected system based on superconducting magnetic energy storage

To enhance the voltage fault ride-through (VFRT) capability of grid-connected photovoltaic (PV) systems under grid voltage faults, this paper proposes an innovative solution using Superconducting Magnetic Energy Storage (SMES). Unlike conventional approaches relying on crowbar circuits or supercapacitors, our method leverages SMES’s rapid response and high efficiency to stabilize DC bus voltage during abrupt grid fluctuations. The study introduces a novel SMES-based control strategy that dynamically absorbs and releases energy to mitigate voltage disturbances, supported by comprehensive comparative simulations demonstrating SMES’s superior VFRT performance over existing methods. Additionally, the research provides practical insights for scaling this solution to other renewable energy systems. The Simulink-validated results confirm that SMES significantly improves PV system resilience while maintaining operational stability, offering a viable path for future grid integration of renewables.