A Second Order High Performance Resonant Controller for Single Phase Islanded Microgrid

In this paper, a robust and high performance second order resonant controller with lead compensator (SORC+LC) is proposed to control the voltage of a distributed single-phase islanded microgrids (SPMGs) for various loads. The controller is designed to mitigate the voltage oscillation caused by the nature of the loads. The model of controller is based on the resonant controller with a feedback combination of lead compensator regulator. The proposed controller performs better in term of settling time, overshoot, voltage oscillation, and voltage THD for various load conditions. With the proposed controller, a settling time of 2 ms and a minimum THD of 0.12% are obtained in particular load conditions. Less phase error and oscillation are also observed in output grid voltage. Thus offered controller is a strong candidate for single phase islanded microgrid.