Apparatus and method for using a microcomputer and switches to control the flow path for the power of a compressor based upon the compressor's load state

摘要

A compressor control apparatus, and a compressor control method. The compressor may be operated in an operation mode in which commercial power applied to the compressor does not pass through an alternating current capacitor when the load is in an overload state, thereby preventing the loss of a drive and effectively reducing the copper and core loss of the compressor.

主权项

1. A compressor control apparatus, comprising:
an alternating current (AC) capacitor configured to be connected in series to a compressor, the compressor being configured to receive commercial power; a microcomputer configured to generate a control signal for selectively operating in a first mode in which power applied to the compressor passes through the alternating current capacitor and a second mode in which power applied to the compressor passes through a branched circuit, based on a load state of the compressor; and a switch configured to control the commercial power applied to the alternating current capacitor in response to the control signal generated by the microcomputer, wherein the switch includes a first alternating current switch and a second alternating current switch, wherein the first alternating current switch is connected in series with the alternating current capacitor, wherein the second alternating current switch is not connected in series with the alternating current capacitor, wherein the microcomputer generates a first control signal for operation in the first mode when the load state is an overload state and generates a second control signal for operation in the second mode when the load state is a medium load state or a low load state, wherein the first mode includes operating the first alternating current switch to allow the power applied to the compressor to pass through the alternating current capacitor, and wherein the second mode includes operating the second alternating current switch to allow the power applied to the compressor to not pass through the alternating current capacitor.