Samsung Electronics Co., Ltd.

Sooyeon Jin

Hooijoong Kim

Sungjong Kim

Jeonggi Hong

Wonjae Han

Jaepoong Lee

Sukwoo Park

A washing machine for controlling optimal operating revolutions per minute (rpm) of a drain pump in a draining course and a dehydrating course includes a washing tub; a drain pump configured to drain water in the washing tub; a pump motor configured to operate the drain pump; an inverter circuit configured to supply a driving current to the pump motor to operate the drain pump; and a controller configured to control the inverter circuit to supply reference power to the pump motor in response to starting a draining course, determine reference revolutions per minute (rpm) based on average rpm of the pump motor during a preset period of time, and control the inverter circuit to operate the pump motor at the reference rpm in response to the determining of the reference rpm.

Growing community of inventors

Suwon-si, South Korea

Sooyeon Jin