Design and Simulation of an Active Disturbance Rejection Controller for the Triphase Parallel DC/DC Buck Converter

This paper presents the design, modeling and simulation of a controller for the triphase parallel DC/DC buck converter under the perspective of differential flatness and the active disturbance rejection control. The main goals of the proposed control approach are to regulate the output voltage and a balance of currents for parallel converters. The software architecture of this controller was modelled using Matlab/Simulink environment. Simulations shows the performance of the proposed controller considering external, unknown and variant over time disturbances and changes in the parameters of the system. According to the experimental results, the main goals are achieved in the robustness of the control approach is shown when uncertainties occur in the system.