Power Conversion Device

A power conversion device, comprising:

• a plurality of power conversion units including two primary input terminals and two secondary output terminals;
• a plurality of current sensors that each detect a current flowing through a secondary output terminal of each of the power conversion units;
• and
• a control unit that measures a frequency component in a predetermined frequency range of a current detected by each of the plurality of current sensors, wherein
• each of the power conversion units includes
• an AC/DC converter that outputs AC power having been input between the two primary input terminals to between the two secondary output terminals,
• an output-side smoothing capacitor connected in parallel between the two secondary output terminals, and smoothing an output voltage output between the two secondary output terminals, and
• a variable resistance switch connected between one end of the output-side smoothing capacitor and one end of the secondary output terminal,
• the control unit controls resistance values of a plurality of the variable resistance switches according to magnitudes of predetermined frequency components of currents detected by the plurality of current sensors, and
• the secondary output terminals of the plurality of power conversion units are connected in parallel to each other to constitute a DC power supply terminal as a power conversion device.