PV system inverter control design based on H∞ control

This paper deals with a grid connected PV system inverter control. An improved H_∞ control is proposed to overcome the line impedance variation and to ensure high bandwidth robust control. Indeed. The design of a third order H_∞ controller is proposed in order to meet grid connected photovoltaic standards. This paper suggests a simple and systematic tuning method for the H_∞ third weighting function. Simulation results expose the robustness of the proposed control against grid impedance variation.