Fuzzy-Secondary-Controller-Based Virtual Synchronous Generator Control Scheme for Interfacing Inverters of Renewable Distributed Generation in Microgrids

In this paper, a fuzzy-secondary-controller-based virtual synchronous generator (VSG) control scheme for interfacing inverters of distributed generation units is proposed for voltage and frequency regulation in microgrids. The proposed control scheme shows significantly improved dynamic performance when compared with the conventional droop control and conventional VSG control through several case studies. Its effectiveness and robustness is further evaluated by sensitivity studies.