Analysis of Cooperative Droop Characteristics on Plug-and-Play DC Distribution System across Multi Level Virtual Conductor

This paper discusses an effect on load sharing characteristics when multiple independent distributed power supplies with droop control on different DC buses were interconnected using Multi level Virtual Conductor. Multi level Virtual Conductor is a Plug and Play DC power grid interconnection system that supports free placement of components without communication. This system may overcome the limitations of the power supply configuration in the conventional Plug and Play method without communication, and it is expected to enhance the design flexibility and reduce the implementation cost of the DC distribution system. Analysis results showed that cooperative load sharing between power supplies on different buses across the Multi level Virtual Conductor is possible. Furthermore, the discussion showed that the interconnection system can be applied to the cooperative control of photovoltaic and battery energy storage systems treated in conventonal studies.