US 2019/0093932 A1 · COMPRESSOR DRIVING APPARATUS AND HOME APPLIANCE INCLUDING THE SAME

Abstract

A compressor driving apparatus, or a home appliance including the same, includes a DC terminal capacitor to store a charge, an inverter to convert direct current associated with the charge of the DC terminal capacitor into an alternating current and output the alternating current to a motor, an output current detection unit to detect an output current flowing in the motor, and an inverter controller to increase a motor speed by starting the motor, and controlling a speed increase of the motor to change based on an increasing slope of a change in an output current detected by the output current detection unit during the speed increase of the motor.

Claims21

Dependent claims

A compressor drive of a home appliance having a mechanical expansion valve and a compressor, the compressor drive comprising:

a capacitor that stores a charge;
an inverter that converts direct current associated with the stored charge of the capacitor into alternating current based on a switching control signal, and outputs the alternating current toward a motor;
output current detection circuitry that generates an output current based on the alternating current flowing between the inverter and the motor;
and
an inverter controller that generates the switching control signal to:
start the motor, and
control a speed increase of the started motor based on a slope associated with a change in the output current from the output current detection circuitry during the speed increase of the motor.

4 more elements

A home appliance comprising:

a mechanical expansion valve;
a compressor;
and
a compressor drive that includes:
a capacitor that stores a charge;
an inverter that converts direct current associated with the stored charge of the capacitor into alternating current based on a switching control signal, and outputs the alternating current toward a motor;
output current detection circuitry that generates an output current based on the alternating current flowing between the inverter and the motor;
and
an inverter controller that generates the switching control signal to:
start the motor, and
control a speed increase of the started motor based on a slope associated with a change in the output current from the output current detection circuitry during the speed increase of the motor.

8 more elements

Dependencies are inferred from the claim text.

Compressor driving apparatus and home appliance including the same

Life of this patent

Compressor driving apparatus and home appliance including the same

Life of this patent

Abstract

Claims21