公开(公告)号：US20180035859A1

公开(公告)日：2018-02-08

申请号：US15556128

申请日：2016-03-07

Applicant: LG ELECTRONICS INC.

Inventor： Seongwoo KIM ,  Hansu JUNG ,  Chungill LEE

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

CPC classification number: A47L9/2852 ,  A47L5/362 ,  A47L9/009 ,  A47L9/2805 ,  A47L9/2826 ,  A47L9/2894 ,  A47L2201/04 ,  B25J13/08 ,  G05D1/0255 ,  G05D2201/0215

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：US20210285140A1

公开(公告)日：2021-09-16

申请号：US17258107

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Jeongbin REW ,  Junho LEE ,  Chungill LEE

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

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：US20200169202A1

公开(公告)日：2020-05-28

申请号：US16620432

申请日：2018-06-05

Applicant: LG Electronics Inc.

Inventor： Kwang Sik KIM ,  Chungill LEE ,  Seokhee CHO

IPC: H02P21/00 ,  H02P27/08 ,  H02P27/16 ,  H02P21/18 ,  H02P21/20 ,  H02P21/22 ,  H02M7/49

Abstract: The present invention relates to a motor driving apparatus and, more specifically, to a motor driving apparatus for selectively performing identical phase overmodulation compensation or minimum distance overmodulation compensation according to a command speed when an output voltage command value of an inverter indicates an overmodulation voltage.

公开(公告)号：US20170302208A1

公开(公告)日：2017-10-19

申请号：US15490475

申请日：2017-04-18

Applicant: LG ELECTRONICS INC.

Inventor： Jungmoon JE ,  Chungill LEE ,  Kiwook LEE

IPC: H02P23/04 ,  D06F39/02 ,  D06F37/40 ,  D06F33/02 ,  D06F37/30 ,  D06F37/24 ,  D06F39/08 ,  D06F39/00

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.

公开(公告)号：US20170047875A1

公开(公告)日：2017-02-16

申请号：US15232855

申请日：2016-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Minho JANG ,  Junho LEE ,  Chungill LEE

IPC: H02P21/18 ,  H02P27/06 ,  H02P6/20

CPC classification number: H02P21/18 ,  H02P6/183 ,  H02P6/20 ,  H02P6/22 ,  H02P27/06

Abstract: A motor driving apparatus included in a home appliance may include an inverter to convert a direct current (DC) power into an alternating current (AC) power through a switching operation and to output the converted AC power to a motor, an output current detector to detect an output current flowing through the motor, a controller to control the inverter, wherein, during a first interval after the motor stops, the controller controls a phase current of a predetermined frequency to flow through the motor to estimate a position of a rotor of the motor, and estimates the position of the rotor of the motor based on the detected output current while the phase current of the predetermined frequency flows through the motor. Thereby, the sensorless motor driving apparatus can easily estimate the position of the motor rotor.

Abstract translation: 包括在家用电器中的电动机驱动装置可以包括逆变器，其通过开关操作将直流（DC）功率转换成交流（AC）电力，并将转换的交流电力输出到电动机，输出电流检测器 检测流过电动机的输出电流，控制器控制逆变器，其中，在电动机停止之后的第一间隔期间，控制器控制预定频率的相电流流过电动机以估计转子的位置 电动机，并且基于检测到的输出电流来估计电动机的转子的位置，同时预定频率的相电流流过电动机。 由此，无传感器电动机驱动装置能够容易地估计电动机转子的位置。

公开(公告)号：US20150051738A1

公开(公告)日：2015-02-19

申请号：US14458590

申请日：2014-08-13

Applicant: LG Electronics Inc.

Inventor： Hoonbong LEE ,  Chungill LEE ,  Hansu JUNG

IPC: 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.

Abstract translation: 可以提供一种用于控制衣物处理装置的方法。 第一速度旋转可以控制滚筒以加速鼓以第一速度旋转，制动可以施加制动器来停止滚筒，第二速度加速可以将滚筒加速到第二速度，电流感测可以感测到电流 在滚筒期间施加到马达的速度加速到第二速度，并且衣物量确定可以基于在当前感测中感测到的电流来确定衣物量。

公开(公告)号：US20200217573A1

公开(公告)日：2020-07-09

申请号：US16638564

申请日：2018-07-31

Applicant: LG ELECTRONICS INC.

Inventor： Kwangsik KIM ,  Aejin BYUN ,  Chungill LEE

IPC: F25C5/20 ,  F25C1/24 ,  F25C5/04 ,  F25C5/185

Abstract: A refrigerator according to the present invention includes: an ice maker for generating ice; an ice bin for storing the ice generated by the ice maker and including a rotational blade that can be rotated in order to discharge the ice; a motor for generating power for rotating the rotational blade; a manipulation pad provided on the door of the refrigerator and manipulated to discharge the ice from the ice bin; a manipulation sensing part for detecting the manipulation of the manipulation pad; and a controller for operating the motor when the manipulation of the manipulation pad is detected by the manipulation sensing part, wherein the controller may rotate the motor in one direction to discharge the ice from the ice bin and the controller rotates the motor in the other direction, which is the opposite direction of the one direction, for a set period of time when the manipulation of the manipulation pad is not detected by the manipulation sensing part during the process of discharging the ice.

公开(公告)号：US20190127903A1

公开(公告)日：2019-05-02

申请号：US16094613

申请日：2017-04-18

Applicant: LG ELECTRONICS INC.

Inventor： Jungmoon JE ,  Chungill LEE ,  Kiwook LEE

IPC: D06F37/30 ,  D06F39/08 ,  D06F33/02 ,  H02P27/12 ,  H02P21/14 ,  H02P21/18 ,  H02P21/22

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：US20180054089A1

公开(公告)日：2018-02-22

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: H02P27/08 ,  H02P21/22 ,  G09G5/00 ,  H04L5/14 ,  H04W4/00

CPC classification number: H02J50/10 ,  G09G5/003 ,  G09G5/006 ,  G09G5/36 ,  G09G2330/02 ,  G09G2370/16 ,  H02J50/12 ,  H02J50/80 ,  H02P21/24 ,  H04W4/80

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：US20170070172A1

公开(公告)日：2017-03-09

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 ,  H02P6/18 ,  H02P27/08

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.

Abstract translation: 电动机驱动装置及家用电器技术领域本发明涉及一种电动机驱动装置及其制造方法。 根据本发明的实施例的电动机驱动装置包括：逆变器，用于根据开关操作将直流母线电容器的直流电压转换为交流电压，并将转换的交流电压输出到电动机; 设置在DC链路电容器和逆变器之间的直流链路电阻器; 以及控制器，用于基于通过直流链路电阻器采样的相电流来控制逆变器，其中控制器在不可能进行相电流检测的间隔中基于通过直流链路电阻器采样的相电流来估计相电流 。 因此，可以使用直流链路电阻器精确地计算流过马达的相电流。