A Droop Controlled Operation of Interlinking Converters for Power Sharing in Hybrid AC/DC Subgrids

In this paper, the power sharing among ac and dc subgrids (ACS and DCSs) which are connected through a droop controlled interlinking converter (IC) is studied. A new method is proposed to manage the power sharing in hybrid ac/dc microgrids and to reduce the complexity in delivering efficient load power during islanded mode of operations. In this work, both ac and dc droop gain values are used to regulate ac frequency and dc voltage at the point of IC. A reliable power sharing method for hybrid system is evaluated at all the operating scenarios of loading and generation conditions. Finally, MATLAB/Simulink based time-domain simulation results are presented to demonstrate the effectiveness of the proposed method under the different power flow conditions.