Realization of Prescribed Performance Control for DC Converter System in DC Microgrid via Finite-Time Sliding Mode Observer

This paper investigates a prescribed performance controller design method for DC converter system in DC Microgrid based on finite-time disturbance observer (FTDO) by means of nonsingular terminal sliding mode control (NTSMC) design procedure. As a main contribution, prescribed performance controller design manner is employed to realize the layout of specific requirements of system performance. Then, FTDO is developed to estimate disturbances quickly and improve the robustness of the system. In addition, considering dynamic response speed of system, NTSMC is utilized to render a finite-time tracking result with tunable parameters for the DC converter system. Finally, numerical simulation results are displayed to demonstrate the dynamic performance of the proposed controller.