KURUVA, Veeranna (École Centrale de Nantes, lS2N laboratoire), Thomas, Vinu (École Centrale de Nantes), Abolmasoumi, Amir Hossein (Ecole Centrale de Nantes, Arak University), Ngo, Hoang-Trung (École Centrale de Nantes), marinescu, bogdan (Ecole Centrale Nantes)

Design and Experimental Implementation of a Robust H∞ Control for LCL Grid-Connected Converter

Scheduled for presentation during the Regular Session "Nonlinear and robust control of power systems" (ThuS2T3), Thursday, July 11, 2024, 12:10−12:30, Session room 3

12th IFAC Symposium on Control of Power & Energy Systems, July 10-12, 2024, Rabat, Morocco

This information is tentative and subject to change. Compiled on January 2, 2025

Abstract

Higher penetration of renewable energy into the electrical grids using grid-connected converters requires robust control schemes to ensure the stable behavior of these converters during disturbances on the grid side. This paper proposes a robust H∞ control scheme reinforced by the D-stability technique using linear matrix inequality (LM I) approach for a three-phase two-level grid-connected converter with LCL filter. The design performance is validated both by simulations and experimental tests. The results indicate that the H∞ control provides better response during disturbances in the grid such as variations in the grid voltage and short-circuit faults when compared to that of the conventional vector control scheme. An experimental validation is carried out by implementing the control scheme on an OPAL-RT-based real-time system to control the power injection of a grid-connected converter hardware setup. The experimental results match the simulation results and show the efficient performance of the proposed control scheme in providing the desired active/reactive power.