Cascaded Droop and Inverse Droop Regulation for Two-Layer Coordinated Power Flow Control in Series-Connected Power Cells

To interconnect string power cells into high voltage grid in a distributed manner, a cascaded power flow regulator is proposed for simultaneous control of the injected power to the grid and flexible power sharing among string power cells. First, the traditional frequency and voltage magnitude droop control at the central controller behaves as the outer power control loop for an accurate regulation...