公开(公告)号：US11463033B2

公开(公告)日：2022-10-04

申请号：US16739690

申请日：2020-01-10

Applicant: LG Electronics Inc.

Inventor： Kwangsik Kim ,  Minho Jang ,  Hansu Jung

IPC: H02P21/12 ,  H02P27/12 ,  H02P21/22

Abstract: Disclosed is about an apparatus, a system, and a method aligning a position of a rotor by applying a specific current to align the rotor a plurality of times to reduce vibration and noise when starting an operation of the motor to align the position of the rotor.

公开(公告)号：US11885065B2

公开(公告)日：2024-01-30

申请号：US18075050

申请日：2022-12-05

Applicant: LG Electronics Inc.

Inventor： Hansu Jung ,  Jaemin Kim ,  Sangwoo Park ,  Junho Lee ,  Lisuel Lim

IPC: D06F58/50 ,  D06F34/10 ,  D06F58/20 ,  D06F58/34 ,  H02P5/74 ,  D06F103/04 ,  D06F103/44 ,  D06F103/46 ,  D06F103/48 ,  D06F105/26 ,  D06F105/30 ,  D06F105/46 ,  D06F101/00 ,  D06F101/14 ,  D06F101/20

CPC classification number: D06F58/50 ,  D06F34/10 ,  D06F58/20 ,  D06F58/206 ,  D06F58/34 ,  H02P5/74 ,  D06F2101/00 ,  D06F2101/14 ,  D06F2101/20 ,  D06F2103/04 ,  D06F2103/44 ,  D06F2103/46 ,  D06F2103/48 ,  D06F2105/26 ,  D06F2105/30 ,  D06F2105/46

Abstract: The present specification relates to a clothing treatment apparatus and a control method therefor, the clothing treatment apparatus comprising: a plurality of inverters for controlling the motors of a drum, a compressor, and a blowing fan; a converter for converting input power input from an external source and outputting the converted power to the inverters; and a control unit for controlling the plurality of inverters and the converter.

公开(公告)号：US09806654B2

公开(公告)日：2017-10-31

申请号：US15238894

申请日：2016-08-17

Applicant: LG ELECTRONICS INC.

Inventor： Hansu Jung ,  Hoyong Jang ,  Seokhee Cho

IPC: H02P21/00 ,  H02P21/18 ,  H02P3/22 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06 ,  D06F25/00

CPC classification number: H02P21/18 ,  D06F25/00 ,  H02P3/22 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06

Abstract: Disclosed herein are a motor driving apparatus and a home appliance including the same. The motor driving apparatus includes a direct current (DC) link capacitor, an inverter, a DC link voltage detector, and a controller. The controller controls rheostatic braking to be performed in order to stop the motor, performs bootstrap operation of gate terminals of the upper arm switching elements of the inverter during a first period for starting the motor, and determines whether the motor stops during the first period based on the DC voltage detected by the DC link voltage detector or the output current detected by the output current detector. Accordingly, it is possible to conveniently determine whether the motor stops in the sensorless type motor driving apparatus.

公开(公告)号：US11139760B2

公开(公告)日：2021-10-05

申请号：US16767934

申请日：2018-11-27

Applicant: LG Electronics Inc.

Inventor： Hansu Jung ,  Dongwook Kim ,  Minho Jang

IPC: H02P27/06 ,  H02P3/22 ,  H02P21/18 ,  H02P3/18 ,  H02M7/537

Abstract: A motor drive apparatus includes: a DC-side capacitor charged with direct current power; an inverter unit comprising multiple top switches and bottom switches, performing a switching operation so as to convert power stored in the DC-side capacitor into alternating current power, and outputting the converted alternating current power to a motor; a shunt resistor for detecting a current flowing through the DC-side capacitor; and a controller for controlling the inverter unit to perform dynamic braking for stopping the motor. Before the dynamic braking is performed, the controller controls the inverter unit to gradually increase a phase current flowing through the bottom switches.

公开(公告)号：US10646087B2

公开(公告)日：2020-05-12

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 ,  A47L5/36 ,  A47L9/00

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：US09708745B2

公开(公告)日：2017-07-18

申请号：US14535702

申请日：2014-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Hansu Jung ,  Soongkeun Lee ,  Minho Jang

IPC: D06F37/30 ,  D06F33/02 ,  H02P6/18 ,  H02P6/182

CPC classification number: D06F37/304 ,  D06F33/02 ,  D06F2202/12 ,  D06F2204/10 ,  H02P6/182 ,  Y02B40/52

Abstract: The laundry treatment machine; absent a position sensor to sense a rotor position, includes a driving unit having a DC/AC inverter, an output voltage detection unit to detect output voltage applied to the motor, and an inverter controller to control the inverter to drive the motor based on the output voltage. The output voltage detection unit includes a plurality of resistors electrically connected between the inverter and the motor and a comparator to compare voltage detected by some of the resistors with reference voltage and to detect pulse width modulation (PWM)-based output voltage. Based on the PWM-based output voltage at least one switching device of the inverter is turned on. The output voltage detection unit outputs voltage detected by other some of the resistors to the inverter controller in a second mode in which all switching devices of the inverter are turned off.

公开(公告)号：US20150128660A1

公开(公告)日：2015-05-14

申请号：US14535595

申请日：2014-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Hansu Jung ,  Jain Koo ,  Soongkeun Lee

IPC: D06F37/30 ,  H02P6/20 ,  D06F33/02

CPC classification number: D06F37/304 ,  D06F33/02 ,  H02P6/182 ,  H02P6/21 ,  H02P21/34

Abstract: The laundry treatment machine includes an inverter to convert direct current (DC) voltage into alternating current (AC) voltage and to output the AC voltage to a motor. The laundry treatment machine includes an inverter controller to control the inverter to supply current corresponding to a direction opposite to back electromotive force generated from the motor to the motor so as to align the motor during a starting operation of the motor. It is feasible to rapidly align a rotor of the motor during the starting operation of the motor.

Abstract translation: 洗衣机包括将直流（DC）电压转换为交流（AC）电压并将AC电压输出到电动机的逆变器。 衣物处理机包括逆变器控制器，用于控制逆变器将与从电动机产生的反电动势相反的方向的电流提供给电动机，以便在电动机的起动操作期间对准电动机。 在马达的启动运行过程中，马达的转子快速对准是可行的。

公开(公告)号：US11258393B2

公开(公告)日：2022-02-22

申请号：US16629267

申请日：2018-07-05

Applicant: LG Electronics Inc.

Inventor： Hansu Jung ,  Seokhee Cho ,  Jungmoon Je

IPC: H02P21/36 ,  H02P27/08 ,  H02P27/12 ,  H02P21/18 ,  H02P21/22

Abstract: The present invention relates to a motor drive apparatus and, more particularly, to a motor drive apparatus capable of immediately restarting by maintaining sensorless control during a stop operation of a motor. The motor drive apparatus comprises: an inverter for driving a motor by using an AC voltage; and a control unit for controlling operations of a switching element included in the inverter. At this time, when a stop command is input, the control unit decreases a duty ratio of a PWM signal until a present speed of the motor becomes smaller than a predetermined minimum speed, thereby decreasing the revolutions per minute of the motor. Then, when a restart command is input in a state where the duty ratio of the PWM signal is decreased, the control unit can immediately restart the motor by increasing the duty ratio of the PWM signal.

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：US09708746B2

公开(公告)日：2017-07-18

申请号：US14535780

申请日：2014-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Minho Jang ,  Hoonbong Lee ,  Hansu Jung

IPC: D06F37/30 ,  D06F33/02 ,  H02P6/22 ,  H02P1/16 ,  H02P6/18 ,  H02P21/34 ,  H02P6/21

CPC classification number: D06F37/304 ,  D06F33/02 ,  D06F2202/065 ,  D06F2202/10 ,  D06F2202/12 ,  D06F2204/065 ,  D06F2222/00 ,  H02P1/16 ,  H02P6/18 ,  H02P6/21 ,  H02P6/22 ,  H02P21/34 ,  Y02B40/52

Abstract: A laundry treatment machine includes a drum, a motor to rotate the drum, and a driving unit to drive the motor, wherein the driving unit includes an inverter to convert direct current (DC) voltage into alternating current (AC) voltage and to output the AC voltage to the motor and an inverter controller to control the inverter to supply an alignment current to the motor so as to align the motor during a starting operation of the motor and to supply a torque current for rotating the motor to the motor together with the alignment current after the motor is aligned. Such a laundry treatment apparatus prevents a reverse rotation phenomenon of the drum due to load.