Power conversion apparatus and air conditioner

A power conversion apparatus comprising:

• a rectifier to rectify an alternating-current voltage input from an alternating-current power supply to convert the alternating-current voltage into a direct-current link voltage;
• a capacitor to be charged with the direct-current link voltage converted by the rectifier;
• a power applier to convert the direct-current link voltage with which the capacitor is charged into an alternating-current voltage by switching the direct-current link voltage, and output the alternating-current voltage to a load;
• and
• a power-applier controller to control the power applier, wherein
• the power-applier controller controls the power applier such that a second beat is superimposed on a load current, the second beat having a second frequency different from a first beat having a first frequency included in the load current, and the second beat having at least one of an amplitude or a phase aligned with the first beat.