REACTIVE POWER CONTROL DEVICE, REACTIVE POWER CONTROL METHOD, AND REACTIVE POWER CONTROL PROGRAM

A reactive power control device includes a voltage acquisition unit that detects a grid voltage and a DC voltage; a modulation rate calculation unit that calculates a modulation rate; a reactive power command acquisition unit that obtains a first reactive power command from a host device; a blind zone determination unit that determines whether the first reactive power command is at a blind zone level; a reactive power command calculation unit that limits or compensates the first reactive power command according to the modulation rate and calculates a second reactive power command when the blind zone determination unit determines that the first reactive power command is not at the blind zone level; and a reactive power command output unit that outputs the second reactive power command when the second reactive power command is calculated, and outputs the first reactive power command when the second reactive power command is not calculated.