公开(公告)号：US09708744B2

公开(公告)日：2017-07-18

申请号：US14535595

申请日：2014-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Hansu Jung ,  Jain Koo ,  Soongkeun Lee

IPC: D06F37/30 ,  D06F33/02 ,  H02P6/18 ,  H02P6/21 ,  H02P21/34 ,  H02P6/182

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.

公开(公告)号：US11535975B2

公开(公告)日：2022-12-27

申请号：US17053002

申请日：2019-05-03

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

Abstract: A clothing treatment apparatus includes 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：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：US11283379B2

公开(公告)日：2022-03-22

申请号：US16903807

申请日：2020-06-17

Applicant: LG ELECTRONICS INC.

Inventor： Jae Jun You ,  Hansu Jung ,  Jaemin Kim

IPC: H02P6/18 ,  H02P6/26

Abstract: A method and an apparatus may detect a rotor magnetic pole of a single-phase BLDC motor. The method and apparatus may quickly and precisely initially drive the single-phase BLDC motor by detecting a position of a magnetic pole of a rotor adjacent to a stator by applying a high frequency voltage to the single-phase BLDC motor and analyzing a magnitude of a flowing current.

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.

公开(公告)号：US09783920B2

公开(公告)日：2017-10-10

申请号：US14458602

申请日：2014-08-13

Applicant: LG ELECTRONICS INC.

Inventor： Hoonbong Lee ,  Hansu Jung ,  Suncheol Bae

IPC: G05B13/00 ,  D06F39/00 ,  D06F58/28 ,  D06F33/02

CPC classification number: D06F39/003 ,  D06F33/02 ,  D06F58/28 ,  D06F2058/2861 ,  D06F2058/2877 ,  D06F2202/10 ,  D06F2202/12 ,  Y02B40/72

Abstract: A method is provided for controlling a laundry treating apparatus. The method may include controlling the drum to accelerate the drum to rotate at a first speed, applying a brake to stop the drum, accelerating the drum to a second speed, sensing a current being applied to the motor while the drum is accelerated to the second speed, and determining a laundry amount based on the sensed current.

公开(公告)号：US09637852B2

公开(公告)日：2017-05-02

申请号：US14067762

申请日：2013-10-30

Applicant: LG ELECTRONICS INC.

Inventor： Hamin Song ,  Hansu Jung ,  Hoonbong Lee

IPC: D06F37/20 ,  D06F33/02

CPC classification number: D06F37/203 ,  D06F33/02 ,  D06F2202/10 ,  D06F2204/065 ,  D06F2222/00

Abstract: Disclosed are a laundry treatment machine and a method of operating the same. The method of operating a laundry treatment machine includes rotating a drum at a first velocity, forcibly vibrating the drum using a forced vibration generation signal during a first velocity rotating section, and determining whether to accelerate or decelerate the drum after forced vibration. Through this method, laundry position may be determined.