64th IEEE Conference on Decision and Control - CDC 2025, Rio de Janeiro (Brazil). 09-12 December 2025
Summary:
The present paper evaluates different sliding mode control techniques for the negative-sequence current injection of voltage source converters under low-voltage ride-through scenarios. Under such scenarios those devices are required, from the grid code specifications, to inject reactive power to help mitigate voltage sag situations. The implicit unbalanced and faulted conditions of this scenario demands a robust enough control strategy to ensure system stability. The robustness requirements and the variety of scenarios justify the consideration of sliding mode for current control. However, the control method is also required to exhibit a smooth and rapid performance during steady-state operation conditions. Among the studied cases an adaptive super-twisting algorithm present better results for this application when considering long-term operation. The implementation of these control techniques might imply challenges on line protections. HiL application is discussed in order to assess the challenges and key considerations that need to be addressed.
Spanish layman's summary:
El artículo aplica controles por modo deslizante a inversores y analiza su funcionamiento ante faltas. Los inversores deben ayudar aportando potencia reactiva en condiciones de falta.
English layman's summary:
The article applies sliding-mode control to inverters and analyzes their behavior during faults. The inverters must assist by supplying reactive power during fault conditions.
Keywords: Current control , Low voltage , Reactive power , Power system stability , Stability analysis , Robustness , Steady-state , Voltage control , Sliding mode control , Voltage-source converters
DOI: 
https://doi.org/10.1109/CDC57313.2025.11312794
Published in: 2025 IEEE 64th Conference on Decision and Control (CDC), pp: 7969-7974, ISBN: 979-8-3315-2628-3
Publication date: 12-Jan-2026.
Citation:
J. Gutiérrez-Florensa, J.L. Anderson-Azzano, P.F. Puleston, A. Ortega, L. Sigrist, "Sliding Mode Control Techniques for Voltage Source Converters under Low-Voltage Ride-Through Scenarios", presented at 64th IEEE Conference on Decision and Control - CDC 2025, Rio de Janeiro, Brazil, 09-12 December 2025. In: 2025 IEEE 64th Conference on Decision and Control (CDC), pp. 7969-7974, doi: 10.1109/CDC57313.2025.11312794
IIT-25-409C
