MOTOR DRIVING DEVICE AND AIR CONDITIONER INCLUDING THE SAME

摘要

A motor driving device and an air conditioner including the same are disclosed. The motor driving device includes a rectifier to rectify input AC power, a boost converter to boost power rectified by the rectifier, a capacitor to store a pulsating voltage from the boost converter, an inverter comprising a plurality of switching elements, the inverter transforming AC power, using a voltage across the capacitor, and outputting the transformed power to a motor, a regenerative power consuming unit arranged between the capacitor and the inverter, to consume regenerative power from the motor, and a switching driving unit to output a switching control signal to a switching element in the regenerative power consuming unit while outputting an operation control signal to an inverter controller when the voltage across the capacitor is equal to or higher than a predetermined voltage.

主权项

1. A motor driving device comprising:
a rectifier to rectify input alternate current (AC) power; a boost converter to boost power rectified by the rectifier; a capacitor to store a voltage from the boost converter; an inverter that includes a plurality of switching elements, the inverter to transform AC power, using a voltage across the capacitor, and to provide the transformed power to a motor; a regenerative power consuming device, between the capacitor and the inverter, to consume regenerative power from the motor, the regenerative power consuming device includes a switching element; an inverter controller to control the inverter; and a switching driving device to provide a switching control signal to the switching element of the regenerative power consuming device and to provide an operation control signal to the inverter controller when the voltage across the capacitor is equal to or greater than a predetermined voltage.