Coordinated Droop Control for Stand-alone DC Micro-grid

  • Kim, Hyun-Jun ;
  • Lee, Yoon-Seok ;
  • Kim, Jae-Hyuk ;
  • Han, Byung-Moon
  • Received : 2013.11.07
  • Accepted : 2014.03.07
  • Published : 2014.05.01


This paper introduces a coordinated droop control for the stand-alone DC micro-grid, which is composed of photo-voltaic 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.


Stand-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)


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