Robust Voltage Stabilization Controller for Uncertain DC Microgrids

In this paper, we propose a new voltage stabilizing controller for DC microgrid. The microgrid under consideration is composed of Distributed Generation Units (DGUs), power lines, and local loads. parameters DGUs lines are assumed to be unknown but belong known bounded sets the loads, which modeled by constant current unknown. proposed adopts disturbance observer based robust against parameter uncertainties external disturbances. One benefit make real uncertain closed-loop system behave like nominal model, in work model desired dynamics relating reference output voltages DGUs. A rigorous stability proof provided results validated through numerical simulations.