an enhanced distributed state feedback for secondary control in an islanded microgrid

This paper applies a new state feedback control to a distributed secondary voltage and frequency control in an islanded microgrid. the problem is focused on the output consensus of the multi-agent systems, which is converted to a first-order dynamic system. the inverter-based distributed generations play as agents in the proposed control strategy. it is assumed that the distributed generators communicate through a communication network modeled by a directed graph (digraph). the distributed output consensus is used to design the secondary controllers. such innovative controllers synchronize distributed generators' output voltages and frequencies to their reference values by a novel state feedback approach. compared to the existing consensus protocols, the proposed method provides a different innovative solution to the secondary voltage and frequency control of microgrids, which has a better response in case of communication failures. finally, extensive and comparative simulations have been presented to verify the validity of the proposed control strategy and the system performance.