POWER CONVERSION APPARATUS, MOTOR DRIVE APPARATUS, AND REFRIGERATION CYCLE APPLICATION DEVICE

Abstract: a power conversion apparatus includes: a rectifying unit that rectifies a power-supply voltage applied from a commercial power supply; a capacitor connected to an output end of the rectifying unit; an inverter that converts dc power output from the capacitor into ac power and outputs the ac power to a device on which a motor is mounted; a voltage detecting unit that detects the power-supply voltage; and a control unit that performs pulsation compensation control of reducing a pulsatile component of a capacitor current that is a charge and discharge current of the capacitor on the basis of a detection value by the voltage detecting unit.

Inventor(s): Koichi ARISAWA, Shuta ISHIKAWA, Takaaki TAKAHARA, Tomohiro KUTSUKI, Haruka MATSUO

CPC Classification: H02P21/05 (specially adapted for damping motor oscillations, e.g. for reducing hunting)

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