POWER CONVERSION DEVICE, MOTOR DRIVE CONTROL DEVICE EQUIPPED WITH POWER CONVERSION DEVICE, COMPRESSOR AND BLOWER EQUIPPED WITH MOTOR DRIVE CONTROL DEVICE, AND AIR CONDITIONER EQUIPPED WITH COMPRESSOR OR BLOWER

摘要

A power conversion device is configured to have reactors and is configured to have chopper circuit units, connected in series, that chop the output of a rectifier configured to rectify an AC voltage from an AC power supply. The power conversion device includes: an AC switch disposed on a side closer to the AC power supply than the chopper circuit units; an AC reactor that is connected in parallel to the AC switch; and a switching control unit that stops the switching of the switching elements when the contact of the AC switch is open.