Drain pump driving apparatus and laundry treatment machine including the same
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United States of America Patent
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Jan 31, 2023
Grant Date -
Oct 1, 2020
app pub date -
Jun 12, 2020
filing date -
Apr 18, 2016
priority date (Note) -
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Abstract
Disclosed herein is a drain pump driving apparatus and a laundry treatment machine including the same. The drain pump driving apparatus and the laundry treatment machine including the same according to an embodiment of the present invention include a motor to operate the drain pump, an inverter to convert a direct current (DC) power to an alternating current (AC) power by a switching operation and output the converted AC power to the motor, an output current detector to detect an output current flowing to the motor, and a controller to control the inverter, wherein the controller may calculate a speed ripple of the motor based on the output current and performs a control operation based on the calculated speed ripple of the motor to change a speed of the motor.
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