Nonlinear Robust Backstepping Control Method Approach for Single Phase Inverter

Abstract

Single phase inverters are commonly used to transfer energy from a source to the crucial appliances or emergency power system. In this study a new model based robust controller for a single phase inverter under the constraint that the output filter parameters are not exactly known is presented. The nonlinear robust controller ensures the output voltage with lowest distortion, desired amplitude and frequency. The stability of proposed control method and the boundedness of the closed loop system are established via Lyapunov based tools with a robust backstepping procedure. Simulation results are given in order to demonstrate performance and effectiveness of the proposed robust controller.