Autonomous control of interlinking converter in hybrid PV-wind microgrid

Abstract

This project aims to develop a simple model of autonomous control of the interlinking converter in hybrid ac-dc microgrid (MG). In the last several years, efforts toward the standardization of these MGs have been made. Various renewable and non-conventional microsources made by DG, an alternative option for modern electrical grids. The microgrid concept reduce multiple reverse conversions in an AC or DC grid and also make a possibilities of connections to variable AC and DC renewable sources and loads to power system. The interconnection of DGs to the grid through power electronic converters has provided safe operation and protection of equipment. The objective is to make the hybrid microgrid in autonomous operation by ensure proper active power sharing proportionally among its DG's. Power sharing considered depend only on the source ratings within the hybrid microgrid, where the existing schemes are mostly for an ac or a dc microgrid, but not both in co-existence. A suitable control scheme developed for controlling the interlinking converter to share active power proportionally among its distributed sources (DG's) and will be verified by MATLAB simulation.