Abstract: An inverter-based stand-alone microgrid control system using a PMU, in which a converter controller configured to control a converter that determines a voltage and a phase of a point where a plurality of distributed power supply devices is interconnected. The system includes a time correction unit configured to provide a time corrected on the basis of time information received from a GPS; a signal comparison/generation unit configured to compare a sine wave generated according to a voltage magnitude and a phase reference signal with a harmonic carrier signal on the basis of the time provided by the time correction unit, and generate a PWM signal; and a switch operation control unit configured to apply the PWM signal from the signal comparison/generation unit to the converter, and operate a switch.