Inverter phase droop current sharing control method without interconnection line parallel connection

The invention discloses a phase droop current sharing control method for inverters without interconnection line parallel connection, and relates to the technical field of power electronic and electrical equipment and electrical engineering. According to the phase droop current sharing control method for the inverter without interconnection line parallel connection, the output frequency of the inverter is kept equal to the bypass voltage through phase droop control, and synchronization with the bypass voltage is realized. According to the method, bypass voltage is used as a dq rotating coordinate, a phase droop control target meeting the current sharing requirement is provided under the dq coordinate system, a Lyapunov function is defined for the target, and a current set value is solved by using the stability theorem of the Lyapunov function. During current inner loop control, a current control equation meeting stability is provided. The phase droop method is utilized to ensure the synchronization of the outp