The invention provides a parallel
power control method for a bidirectional interface converter of an AC / DC
hybrid micro-grid, and the method comprises the steps: adding an
inertia control link and a capacity distribution link into an
active control loop of the parallel bidirectional interface converter; according to the
alternating current side
frequency deviation and the
direct current side
voltage deviation of the parallel bidirectional interface converter, an active
power transmission reference value of each bidirectional interface converter is calculated through
inertia control and capacity allocation links; and the active
power transmission reference value of each bidirectional interface converter is sent to a power current control ring to obtain a
signal for driving a switch in the three-phase
bridge type conversion circuit. Power distribution is realized through
inertia control and capacity distribution links, the control convenience and reliability of the parallel bidirectional interface converter are improved, the circulating power of the parallel bidirectional interface converter is solved, the
complex calculation of
control parameters of the parallel bidirectional interface converter is reduced, the
power balance state of the parallel bidirectional interface converter is formed, and the reliability of the parallel bidirectional interface converter is improved. And meanwhile, the dynamic response of alternating-current frequency and direct-
current voltage and current is improved.