Adaptive Droop Voltage Control on Parallel Connected Converters for DC Microgrid Systems

Abstract

Distributed Generators (DGs)are widely used as power sources in power system. The converters and control algorithm are used for sharing current between the load and microgrid. The three control types - centralized, decentralized and master-slave are used in DGs ,have their deficiency to maintain continuous power supply. The communication link between master-slave makes time delay and affects controlling system. The traditional droop control set point according to load is the main problem for DC micro-grid. This paper mainly deals with, an adaptive and flexible control of microgrid with parallel operation of converters to maintain the system stable for any load. The solar PV, wind generator and batteries are connected in parallel to microgrid and its performance is simulated and analyzed by MATLAB 2019a Simulink.