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A control apparatus for controlling a motor of an air conditioner includes a converter, having switching for improving an input power factor, for converting an AC power to a DC power and an inverter for converting the DC power supplied from the converter to the AC power and supplying to a compressor

A control apparatus for controlling a motor of an air conditioner includes a converter, having switching for improving an input power factor, for converting an AC power to a DC power and an inverter for converting the DC power supplied from the converter to the AC power and supplying to a compressor. The output DC voltage of the converter is detected by a DC voltage detecting circuit. An input alternating current is detected by a current detecting circuit. A microcomputer for controlling the inverter calculates a current command from data stored on the basis of the detected voltage. The detected current is compared with the current command, an ON percentage of a PWM signal to control the switching is obtained, and the PWM signal is generated.

대표청구항 ▼

A control apparatus for controlling an air conditioner, comprising: a converter for converting an input AC supply power into a DC power, the converter having switching means for improving an input power factor of the air conditioner; an inverter for converting the DC power into an AC power and suppl

A control apparatus for controlling an air conditioner, comprising: a converter for converting an input AC supply power into a DC power, the converter having switching means for improving an input power factor of the air conditioner; an inverter for converting the DC power into an AC power and supplying the AC power to a compressor; a microcomputer for controlling the converter and the inverter; current detecting means for detecting an input current level of the AC supply power; voltage detecting means for detecting a voltage level of the DC power output of the converter; and DC voltage comparing means for comparing the detected DC voltage and a predetermined DC voltage; wherein the microcomputer includes current command calculation selecting means for obtaining a current command in accordance with a comparison result of the DC voltage comparing means, and switching control means for comparing the current command and the detected input current, obtaining an ON percentage of a PWM signal to control the switching means, and outputting the PWM signal to the switching means.