Operation Analysis of Coordinated Droop Control for Stand-alone DC Micro-grid

Abstract

Abstract. This paper introduces a coordinated droop control for the stand-alone DC micro-grid., which is composed of photovoltaic generator, wind power generator, engine generator, and battery storage with SOC (state of charge) management system. The operation of stand-alone DC micro-grid with the coordinated droop control was analyzed with computer simulation. Based on simulation results, a hardware simulator was built and tested to analyze the performance of proposed system. The developed simulation model and hardware simulator can be utilized to design the actual stand-alone DC micro-grid and to analyze its performance. The coordinated droop control can improve the reliability and efficiency of the stand-alone DC micro-grid Key wordsstand-alone DC micro-grid, autonomous control, droop control, PV (photo-voltaic) generator, WP (wind power) generator, BES (battery energy storage), SOC (state of charge), MPPT (maximum power point tracking).