Power converter and air conditioner

A power converter comprising:

• a non-boost rectifier circuit configured to convert a first alternating-current voltage into a direct-current voltage;
• a reactor connected to the rectifier circuit;
• a capacitor configured to smooth the direct-current voltage;
• an inverter connected in parallel to the capacitor, and configured to:
• convert the smoothed direct-current voltage into a second alternating-current voltage having desired voltage and frequency;
• and
• output the second alternating-current voltage to a motor;
• and
• a controller configured to control an operation of the inverter,
• wherein
• capacitances of the reactor and the capacitor are set such that a resonance frequency of a filter circuit is smaller than a first electrical angular frequency, the filter circuit comprising the reactor and the capacitor, the first electrical angular frequency being based on a voltage command when the controller controls an operation of the inverter such that the second alternating-current voltage is maximized in a range not causing overmodulation, and
• capacitances of the reactor and the capacitor are set such that the resonance frequency is smaller than the first electrical angular frequency that is a six-fold component of a second electrical angular frequency, the second electrical angular frequency being determined using a rotation speed of the motor and a number of pole pairs of the motor when the second alternating-current voltage is maximized in a range not causing overmodulation with the voltage command in a sinusoidal wave mode controlled by the controller.