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公开(公告)号：US20210148032A1
公开(公告)日：2021-05-20
申请号：US17048732
申请日：2019-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Jungmoon JE , Kiwook LEE
Abstract: The present disclosure relates to a laundry treatment machine. The laundry treatment machine according to an embodiment of the present disclosure includes a controller configured to increase or decrease stepwise a speed of a motor during dewatering. Accordingly, it is possible to reduce a speed ripple during dewatering.
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公开(公告)号：US20210156065A1
公开(公告)日：2021-05-27
申请号：US17048682
申请日：2019-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Jungmoon JE , Kiwook LEE
IPC: D06F33/42 , D06F39/08 , D06F33/48 , D06F34/08 , D06F34/14 , F04D25/06 , F04D27/00 , H02P6/17 , H02P6/28
Abstract: The present disclosure relates to a laundry treatment machine. According to an embodiment of the present disclosure, a laundry treatment machine includes a controller controlling a motor, during dewatering, to be driven at a first speed when a lift is at a first level and to drive the motor at a second speed greater than the first speed when the lift is at a second level greater than the first level, wherein the lift is a difference between a water level of a water introduction part through which water flows into a drain pump and a water level of a water discharge part through which the water is discharged out of the drain pump. Accordingly, noise or vibration can be reduced even if the lift is changed during the dewatering.
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3.发明申请公开(公告)号：US20160233816A1
公开(公告)日：2016-08-11
申请号：US15017337
申请日：2016-02-05
Applicant: LG ELECTRONICS INC.
Inventor： Jungmoon JE , Minho JANG , Hyunjin KIM
IPC: H02P29/024 , D06F37/30 , H02P6/08 , H02P27/06 , H02P6/28
CPC classification number: H02P29/0241 , D06F37/304 , H02P6/08 , H02P6/28 , H02P21/28 , H02P27/06
Abstract: The present disclosure relates to a motor driving device and a laundry treatment apparatus. An inverter is configured to convert a DC voltage of DC terminals into an AC voltage according to a switching operation and to output the AC voltage to a motor. A DC terminal voltage detector is configured to detect the voltage of the DC terminals, and an output current detector is configured to detect an output current flowing through the motor. A controller is configured to control the inverter based on the detected output current. The controller controls the motor to operate based on a flux current command value from among the flux current command values and a torque current command value for driving the motor in an overvoltage protection mode when the detected DC terminal voltage is higher than a first predetermined value and power is supplied from the motor to the DC terminals. Abrupt DC terminal voltage increase may be prevented.
Abstract translation: 本发明涉及电动机驱动装置和衣物处理装置。 逆变器被配置为根据开关操作将DC端子的DC电压转换成AC电压并将AC电压输出到电动机。 DC端子电压检测器被配置为检测DC端子的电压，并且输出电流检测器被配置为检测流过电动机的输出电流。 控制器被配置为基于检测到的输出电流来控制逆变器。 控制器根据检测到的直流端子电压高于第一预定值的过电压保护模式中的通量电流指令值中的磁通电流指令值和驱动电动机的转矩电流指令值，控制电动机的动作， 电源从电机供电到直流端子。 可以防止突然的直流端子电压增加。
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4.发明申请公开(公告)号：US20160226426A1
公开(公告)日：2016-08-04
申请号：US15013817
申请日：2016-02-02
Applicant: LG ELECTRONICS INC.
Inventor： Junho LEE , Chungill LEE , Jungmoon JE
CPC classification number: H02P27/06 , D06F37/304 , H02P6/14 , H02P6/28 , H02P21/18 , H02P27/085
Abstract: The present disclosure relates to a motor driving device and a laundry treatment apparatus. The motor driving device may include an inverter to convert DC power into AC power according to 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, and a controller to control the inverter based on the detected output current. The controller changes a carrier frequency, changes a voltage command based on the changed carrier frequency and outputs an inverter switching control signal to the inverter based on the changed carrier frequency and the changed voltage command. Accordingly, noise may be reduced during operation of the motor.
Abstract translation: 本发明涉及电动机驱动装置和衣物处理装置。 电动机驱动装置可以包括逆变器，其根据开关操作将DC电力转换成AC电力，并将转换的AC电力输出到电动机;输出电流检测器，用于检测流过电动机的输出电流;以及控制器，用于控制 逆变器基于检测到的输出电流。 控制器改变载波频率，根据变化的载波频率改变电压指令，并根据变化的载波频率和改变的电压指令将逆变器切换控制信号输出到逆变器。 因此，在马达运行期间噪声可能会降低。
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公开(公告)号：US20210156066A1
公开(公告)日：2021-05-27
申请号：US17048927
申请日：2019-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Jungmoon JE , Chungill LEE , Kiwook LEE
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 controller configured to drive a motor, during drainage, based on an output current and a direct current (DC) terminal voltage with a first power when a lift is at a first level and to drive the motor with the first power when the lift is at a second level that is greater than the first level, wherein the lift is a difference between a water level of a water introduction part through which water flows into a drain pump and a water level of a water discharge part through which the water is discharged out of the drain pump. Accordingly, water pumping can be performed smoothly even if the lift is changed during the drainage.
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Patent Agency Ranking
公开(公告)号：US20200308754A1
公开(公告)日：2020-10-01
申请号：US16900030
申请日：2020-06-12
Applicant: LG ELECTRONICS INC.
Inventor： Jungmoon JE , Chungill LEE , Kiwook LEE
IPC: D06F39/08 , H02P21/05 , D06F33/00 , D06F34/28 , D06F37/24 , D06F37/30 , D06F37/40 , D06F39/02 , H02P23/04
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.
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公开(公告)号：US20190352835A1
公开(公告)日：2019-11-21
申请号：US16476956
申请日：2018-01-08
Applicant: LG ELECTRONICS INC.
Inventor： Jungmoon JE , Kiwook LEE
Abstract: According to the present invention, a control method for a clothing treatment device comprises the steps of: transmitting a power-related order to a motor that provides electric power to a drain pump in order to perform a dehydration process; detecting a unit revolution count of the motor while the dehydration process is performed; determining whether the detected unit revolution count exceeds a preset limited revolution count; reducing the unit revolution count of the motor to a predetermined unit revolution count if the detected unit revolution count exceeds the limited revolution count; and repeatedly transmitting the power-related order to the motor.
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公开(公告)号：US20210164152A1
公开(公告)日：2021-06-03
申请号：US17048660
申请日：2019-04-19
Applicant: LG ELECTRONICS INC.
Inventor： Jungmoon JE , Kiwook LEE
Abstract: The present disclosure relates to a laundry treatment machine. The laundry treatment machine according to an embodiment of the present disclosure includes a controller configured to start dewatering after a first period from completion of drainage when a lift is at a first level, and to start the dewatering after a second period from the completion of the drainage when the lift is at a second level greater than the first level, wherein the second period is longer than the first period. Accordingly, based on the lift, it is possible to change the dewatering entry period after drainage is completed.
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公开(公告)号：US20190127900A1
公开(公告)日：2019-05-02
申请号：US16177859
申请日：2018-11-01
Applicant: LG Electronics Inc.
Inventor： Kiwook LEE , Jungmoon JE
Abstract: The present invention provides a laundry treating apparatus including a drain pump having a motor, an inverter unit to transfer power to the motor, and a control unit to control the inverter unit to operate the drain pump, wherein the control unit sets an operation mode of the drain pump based on a current flowing in a part of the inverter unit, and controls the inverter unit based on the set operation mode.
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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
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.
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