INVERTER DC LINK VOLTAGE CONTROL SYSTEM AND METHOD THEREOF

摘要

Disclosed is an inverter DC link voltage control system. The inverter DC link voltage control system according to an embodiment of the present invention comprises a rectifying unit which outputs DC power by rectifying inputted AC power; a DC link terminal which outputs a DC link voltage by smoothing the DC power applied from the rectifying unit; an inverter which converts the DC link voltage into an AC voltage and outputs the same; a voltage selection unit which senses the DC link voltage of the DC ling terminal and outputs a switch control signal based on a result which compares the sensed DC link voltage with a predetermined standard voltage; and a voltage control unit which discharges or reduces the DC link voltage based on the switch control signal.