An improved droop algorithm strategy for inverters in microgrids

In Microgrids, the traditional droop characteristic may result in control errors, because of the output impedance and line impedance. In this paper,the active and reactive circulating current of the parallel system model and the traditional droop characteristic are analyzed.Considering of the output impedance and line impedance, the reactive power sharing improperly is analyzed.Because of the improper power sharing problem can not be improved by the control scheme, the improved power decouple control scheme is proposed.The improved droop algorithm can improve the condition of the power sharing.At last,the advancement of the proposed control scheme have been verified by the MATLAB/Simulink simulation.