LADRC Current Control Based On LTCL Filter

Abstract

This paper focuses on the grid connected inverter system based on LTCL filter. On the basis of stability analysis, the inherent resonance of the filter is compensated and suppressed. After the analysis, it is equivalent and simplified. The linear active disturbance rejection control method and the phase-locked loop of the front filter are adopted to ensure the robustness of the system. Finally, the simulation results show that the proposed control method is effective.