P + Resonant Controller Design for Single-phase Islanded Microgrid

The work presents the design and application of a robust joint (P + Resonant) controller for single-phase islanded microgrid in the presence of different load dynamics. In a microgrid system, there consists of different unknown and uncertain load dynamics. The purpose of this proposed controller is to achieve robust performance to track the instantaneous grid reference voltage against these uncertain load dynamics. The fault current tracking performance of the controller has also been discussed. The simulation work is done via MATLAB/SimPower System toolbox. It is observed that the proposed controller has successfully tracked the reference grid voltage with a minimum steady-state error.