Control of power in an island microgrid using adaptive droop control

Abstract

In this paper, proposed an adaptive droop controller using compensate for the mismatch in voltage drops across line impedance, to enhance reactive power sharing accuracy in island microgrid. Communication is used to facilitate the tuning of adaptive controller for the change of load. The method will ensure in accurate reactive power sharing even the communication is interrupted if the load does not change during this time. If the load changes while the communication is interrupted, the accurate sharing is reduced, but the proposed method is better than the conventional droop control method. In addition, the accuracy reactive power sharing base on the proposed method is not affected by the time delay in the communication channel. The feasibility and effectiveness of the proposed method are demonstrated by using simulation on Matlab/Simulink.