THREE-PHASE VOLTAGE DOUBLER RECTIFIER UNIT, INVERTER DEVICE, AIR CONDITIONING DEVICE, AND CONTROL METHOD AND PROGRAM OF THREE-PHASE VOLTAGE DOUBLER RECTIFIER UNIT

摘要

To provide a three-phase voltage doubler rectifier unit capable of improving input power factor with simple control, suppressing harmonic current, and performing operation of voltage doubler rectification.SOLUTION: A three-phase voltage doubler rectification unit 1A includes: a rectifier circuit 10 that rectifies a three-phase AC voltage supplied from the three-phase AC power supply 3, and outputs a rectified voltage; a voltage doubler circuit 11 operable in a double voltage mode which is supplied with the rectified voltage and outputs a DC voltage equivalent to twice an amplitude of the three-phase AC voltage; a voltage doubler circuit control portion 12 that can select whether to send a command to operate in the voltage doubler mode to the voltage doubler circuit 11; a reactor connected between the rectifier circuit 10 and the voltage doubler circuit 11 to provide an inductance between the output of the rectifier circuit 10 and the output of the voltage doubler circuit 11; and an inductance adjustment portion 13 that adjusts the inductance according to the selection.SELECTED DRAWING: Figure 1