Reliable Control of AC Micro-Grid Inverter System in Island Mode

Abstract

Aimed at actuator failures, the design problem of the passive robust H_∞ fault-tolerant controller for the uncertain island AC micro-grid inverter system is studied, which has good suppression ability to the external limited energy disturbance. Firstly, the fault model of the uncertain island AC micro-grid inverter system is established; then the robust H_∞ fault-tolerant controller is designed offline. Finally, the MATLAB simulation is given to illustrate the feasibility of the control law, which make the system progressively stable when the system actuator fails.