Improved droop control of DC microgrid based on virtual impedance

Abstract In order to solve the problem of distributed energy generation, microgrid has been proposed as one of the options. Compared with AC microgrid, DC microgrid is more suitable for many current distributed power equipments. In order to ensure the stable operation of the DC microgrid, it is necessary to develop an effective energy management strategy. As a typical method of current distribution, droop control has been widely studied and discussed. Traditional droop control has inherent limitations, so this paper proposes an improved method for droop control.