公开(公告)号：US09828718B2

公开(公告)日：2017-11-28

申请号：US14458590

申请日：2014-08-13

Applicant: LG ELECTRONICS INC.

Inventor： Hoonbong Lee ,  Chungill Lee ,  Hansu Jung

IPC: G05B13/00 ,  D06F39/00 ,  D06F33/02

CPC classification number: D06F39/003 ,  D06F33/02 ,  D06F2202/10 ,  D06F2202/12 ,  D06F2204/06 ,  D06F2204/08

Abstract: A method may be provided for controlling a laundry treating apparatus. A first speed rotating may control the drum to accelerate the drum to rotate at a first speed, a braking may apply a brake to stop the drum, a second speed accelerating may accelerate the drum to a second speed, a current sensing may sense a current being applied to the motor during the drum is accelerated to the second speed, and a laundry amount determining may determine a laundry amount based on the current sensed in the current sensing.

公开(公告)号：US09746225B2

公开(公告)日：2017-08-29

申请号：US14146483

申请日：2014-01-02

Applicant: LG Electronics Inc.

Inventor： Yonghwan Eom ,  Kibae Lee ,  Sangbok Choi ,  Namki Lee ,  Chungill Lee

IPC: F25B49/00 ,  G05D23/32 ,  F25B49/02 ,  F25B5/02

CPC classification number: F25B49/02 ,  F25B5/02 ,  F25B2700/151

Abstract: A refrigerator includes a motor to drive a compressor, an output current detector to detect an output current flowing to the motor, a compressor controller to calculate a power consumed in the compressor based on the detected output current, a plurality of power consuming units, and a main controller to receive the calculated compressor power consumption information, and when the plurality of power consuming units operate, to calculate a final power consumption using power consumption information stored for each power consuming unit and the calculated compressor power consumption information. Accordingly, computation of a power consumption may be simply performed.

公开(公告)号：US11236460B2

公开(公告)日：2022-02-01

申请号：US16094613

申请日：2017-04-18

Applicant: LG ELECTRONICS INC.

Inventor： Jungmoon Je ,  Chungill Lee ,  Kiwook Lee

IPC: D06F39/08 ,  D06F33/42 ,  H02P21/18 ,  H02P21/22 ,  H02P21/14 ,  H02P27/12 ,  D06F103/48 ,  D06F37/12 ,  D06F105/46

Abstract: Disclosed is a drain pump driving apparatus and a laundry treatment machine including the same. The laundry treatment machine includes: a drain pump driving apparatus configured to drive a drain pump, wherein the drain pump driving apparatus includes: a motor to drive 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 configured to control the inverter, wherein the controller is further configured to calculate a speed of the motor based on an output current, and calculate a lift, which is a difference between a water level of a water introduction part through which water flows into the drain pump and s water level of a water discharge part for discharging water from the drain pump, based on the calculated speed.

公开(公告)号：US10581274B2

公开(公告)日：2020-03-03

申请号：US15800900

申请日：2017-11-01

Applicant: LG ELECTRONICS INC. ,  RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY

Inventor： Soongkeun Lee ,  Chungill Lee ,  Seonwook Park ,  Sungwoo Bae ,  Jaejung Yun ,  Jeongtae Kim ,  Younggeun Lee

IPC: H02J50/10 ,  H02J50/80 ,  H04W4/80 ,  H02J50/12 ,  H02P21/24 ,  G09G5/00 ,  G09G5/36

Abstract: A home appliance is disclosed, including a first circuit unit including a converter configured to convert an Alternating Current (AC) power into a Direct Current (DC) power, a first coil, a first modulator/demodulator configured to wirelessly transmit the DC power generated by the converter using the first coil, and a first controller configured to control the first modulator/demodulator, and a second circuit including a second coil configured to receive a wireless power transmitted by the first circuit unit, a second modulator/demodulator configured to convert the wireless power received from the second coil, a rectifier configured to rectify an AC power generated by the second modulator/demodulator, and a second controller configured to control operation of the second modulator/demodulator, wherein the first modulator/demodulator and the second modulator/demodulator perform bidirectional time-division data communication.

公开(公告)号：US10199870B2

公开(公告)日：2019-02-05

申请号：US15171284

申请日：2016-06-02

Applicant: LG ELECTRONICS INC.

Inventor： Soongkeun Lee ,  Hoyong Jang ,  Chungill Lee

IPC: H02J3/00 ,  H04B5/00 ,  H02J50/12 ,  H04W4/80 ,  H02J7/02 ,  H02J50/80 ,  H02J50/15 ,  G09G5/00 ,  H02P27/08

Abstract: A home appliance is disclosed, including a motor, a drive unit configured to drive the motor, a first circuit unit including a main controller configured to control the drive unit, a display unit, and a second circuit unit including a display controller configured to control the display unit. The first circuit unit transmits wireless power to the second circuit unit, using a first frequency, and the second circuit unit transmits data to the first circuit unit, using a second frequency different from the first frequency. Thereby, wireless power transmission and bidirectional communication are performed between the first and second circuit units.

公开(公告)号：US09797934B2

公开(公告)日：2017-10-24

申请号：US14862300

申请日：2015-09-23

Applicant: LG Electronics Inc.

Inventor： Namki Lee ,  Chungill Lee

IPC: G01R21/00 ,  G01R22/06 ,  G01R22/00 ,  G01R22/10

CPC classification number: G01R21/00 ,  G01R22/00 ,  G01R22/06 ,  G01R22/063 ,  G01R22/10

Abstract: An appliance includes an operation unit that is mounted in a case of the appliance that is supplied power by an external power supply and that includes at least one of a motor and a heating member. The appliance further includes a control circuit mounted in the case of the appliance and configured to control the operation unit to perform appliance functionality that is different than measuring power. The appliance further includes a power meter coupled to the control circuit, built into the case, and configured to measure power consumed by the appliance in performing the appliance functionality.

公开(公告)号：US11859330B2

公开(公告)日：2024-01-02

申请号：US17258107

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Jeongbin Rew ,  Junho Lee ,  Chungill Lee

IPC: D06F34/10 ,  D06F37/30 ,  D06F33/42 ,  D06F23/04 ,  D06F39/08 ,  F04D13/06 ,  F04D15/00 ,  H02P27/08 ,  H03F3/45 ,  D06F105/46 ,  D06F105/08

CPC classification number: D06F34/10 ,  D06F23/04 ,  D06F33/42 ,  D06F37/30 ,  D06F37/304 ,  D06F39/085 ,  F04D13/06 ,  F04D15/0066 ,  H02P27/08 ,  H03F3/45475 ,  D06F2105/08 ,  D06F2105/46

Abstract: The present disclosure relates to a drain pump driving apparatus and a laundry treatment machine including the same. A drain pump driving apparatus according to an embodiment of the present disclosure includes: a converter; a voltage dropper to drop the DC voltage from the converter; an inverter module to operate based on a first voltage from the voltage dropper and to output AC voltage converted by a switching operation to a drain pump motor; a controller to operate based on a second voltage from the voltage dropper and to control the inverter module; and a voltage adjuster to adjust the level of voltage information of the motor outputted from the inverter module and to output the adjusted voltage information to the controller. Accordingly, it is possible to stably drive the drain motor.

公开(公告)号：US11369245B2

公开(公告)日：2022-06-28

申请号：US16725241

申请日：2019-12-23

Applicant: LG Electronics Inc.

Inventor： Seongwoo Kim ,  Hansu Jung ,  Chungill Lee

IPC: G05D1/02 ,  A47L5/36 ,  A47L9/28 ,  A47L9/00 ,  B25J13/08

Abstract: Provided is a vacuum cleaner. The vacuum cleaner includes a cleaner body including a moving device for moving, a suction device connected to the cleaner body to suction dusts and air and guide the suctioned dusts and air to the cleaner body, the suction device including a handle, a detection device for detecting a distance between the handle and the cleaner body, and a controller determining whether movement of cleaner body is necessary on the basis of the distance between the cleaner body and the handle, the controller controlling the moving device when the movement of the cleaner body is necessary. The controller controls the moving device to allow the cleaner body to avoid an obstacle when it is determined that an operation for avoiding the obstacle is necessary while the moving device operates.

公开(公告)号：US11165373B2

公开(公告)日：2021-11-02

申请号：US16630374

申请日：2018-07-05

Applicant: LG Electronics Inc.

Inventor： Hansu Jung ,  Kwang Sik Kim ,  Chungill Lee

IPC: H02P6/18 ,  H02P21/22

Abstract: The present disclosure relates to a motor driving apparatus and, more specifically, to a motor driving apparatus which allows a maximum torque operation by correcting an angle error occurring during quick acceleration of a motor in a sensorless system. The motor driving apparatus comprises: an inverter for driving a motor, using an alternating current voltage; and a control unit for outputting a PWM signal for controlling an operation of a switching element included in the inverter. Here, the control unit determines an inductance parameter used to calculate a speed command value for determining a duty ratio of a PWM signal, and determines whether the motor is being accelerated, on the basis of a current change measured from the inverter. When the motor is being accelerated, the control unit enables a maximum torque operation by reducing an angle error of a rotor through a correction of reducing a previously-determined inductance parameter.

公开(公告)号：US09954473B2

公开(公告)日：2018-04-24

申请号：US15205638

申请日：2016-07-08

Applicant: LG ELECTRONICS INC. ,  Pusan National University Industry-University Cooperation Foundation

Inventor： Jungmoon Je ,  Hansu Jung ,  Chungill Lee ,  Jangmok Kim ,  Hyunkeun Ku ,  Hanbeom Yeom

IPC: H02P21/24 ,  H02P27/08 ,  H02P6/18

CPC classification number: H02P21/24 ,  H02M7/00 ,  H02P6/17 ,  H02P6/18 ,  H02P6/28 ,  H02P21/22 ,  H02P27/08

Abstract: The present invention relates to a motor driving apparatus and a home appliance including the same. A motor driving apparatus according to an embodiment of the present invention includes an inverter for converting a DC voltage of a DC-link capacitor into an AC voltage according to a switching operation and outputting the converted AC voltage to a motor; a DC-link resistor disposed between the DC-link capacitor and the inverter; and a controller for controlling the inverter based on a phase current sampled through the DC-link resistor, wherein the controller estimates a phase current based on the phase current sampled through the DC link resistor, in an interval in which phase current detection is not possible. Thereby, the phase current flowing through the motor may be accurately calculated using the DC link resistor.