Control of inverter-interfaced distributed generation systems in different operation modes

In this paper, current controller, active and reactive power controller and voltage-frequency controller are designed for inverter-interfaced distributed generation (DG) system. Inverter-interfaced DG is modeled as a three phase full-bridge IGBT voltage source inverter. Tracking performance and disturbance rejection capability of the proposed controllers are evaluated by implementation of them in time-domain in the PSCAD/EMTDC software environment. Simulation results will be provided in order to show the effectiveness of the proposed controllers.