公开(公告)号：EP3235937A1

公开(公告)日：2017-10-25

申请号：EP17166746.2

申请日：2017-04-18

Applicant: LG Electronics Inc.

Inventor： JE, Jungmoon ,  LEE, Chungill ,  LEE, Kiwook

IPC: D06F37/30 ,  D06F39/08 ,  D06F33/02

CPC classification number: H02P23/04 ,  D06F33/02 ,  D06F37/24 ,  D06F37/304 ,  D06F37/40 ,  D06F39/005 ,  D06F39/02 ,  D06F39/085 ,  D06F2204/065 ,  Y02B40/52

Abstract: Disclosed herein are a drain pump (141), a drain pump driving apparatus (620) and a laundry treatment machine (100) including the same; wherein said laundry treatment machine (100) includes a motor (630) to operate the drain pump (141), an inverter (420) 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 (630), an output current detector (E) to detect an output current (idc) flowing to the motor (630), and a controller (430) to control the inverter (420), wherein the controller (430) may calculate a speed ripple of the motor (630) based on the output current (idc) and performs a control operation based on the calculated speed ripple of the motor (630) to change a speed of the motor (630).

Abstract translation: 本发明公开了一种排水泵（141），排水泵驱动装置（620）和包括该排水泵驱动装置（620）的衣物处理机器（100） 其中所述衣物处理机器包括用于操作排水泵的马达630，通过开关操作将直流（DC）电力转换成交流（AC）电力的逆变器（420），以及 （630），输出电流检测器（E）以检测流向马达（630）的输出电流（idc），以及控制器（430），用于控制逆变器（420），其中， 控制器430可以基于输出电流（idc）来计算电动机630的速度脉动，并且基于计算出的电动机630的速度脉动执行控制操作以改变电动机630的速度 ）。

公开(公告)号：EP3051691B1

公开(公告)日：2019-03-06

申请号：EP16153350.0

申请日：2016-01-29

Applicant: LG Electronics Inc.

Inventor： LEE, Junho ,  LEE, Chungill ,  JE, Jungmoon

IPC: H02P27/08 ,  D06F37/30 ,  H02P27/06 ,  H02P6/14 ,  H02P6/28 ,  H02P21/18

公开(公告)号：EP3057226B1

公开(公告)日：2018-10-03

申请号：EP16154422.6

申请日：2016-02-05

Applicant: LG Electronics Inc.

Inventor： JE, Jungmoon ,  JANG, Minho ,  KIM, Hyunjin

IPC: H02P21/28

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.

公开(公告)号：EP3057226A1

公开(公告)日：2016-08-17

申请号：EP16154422.6

申请日：2016-02-05

Applicant: LG Electronics Inc.

Inventor： JE, Jungmoon ,  JANG, Minho ,  KIM, Hyunjin

IPC: H02P21/28

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电压转换为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规定值时的电流指令值和通过过电压保护模式驱动电动机的转矩电流指令值，根据磁通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。 可以防止突发的直流端子电压升高。

公开(公告)号：EP3783143A1

公开(公告)日：2021-02-24

申请号：EP19787723.6

申请日：2019-04-19

Applicant: LG Electronics Inc.

Inventor： JE, Jungmoon ,  LEE, Chungill ,  LEE, Kiwook

IPC: D06F39/08 ,  D06F33/02

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.

公开(公告)号：EP3651348A1

公开(公告)日：2020-05-13

申请号：EP18827944.2

申请日：2018-07-05

Applicant: LG Electronics Inc.

Inventor： JUNG, Hansu ,  CHO, Seokhee ,  JE, Jungmoon

IPC: H02P6/20 ,  H02P6/18 ,  H02P3/14

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：EP3051691A1

公开(公告)日：2016-08-03

申请号：EP16153350.0

申请日：2016-01-29

Applicant: LG Electronics Inc.

Inventor： LEE, Junho ,  LEE, Chungill ,  JE, Jungmoon

IPC: H02P27/08

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 (200) may include an inverter (420) to convert DC power into AC power according to a switching operation and to output the converted AC power to a motor (250), an output current detector (E) to detect an output current flowing through the motor (250), and a controller (430) to control the inverter (420) based on the detected output current. The controller (430) changes a carrier frequency, changes a voltage command based on the changed carrier frequency and outputs an inverter switching control signal to the inverter (420) based on the changed carrier frequency and the changed voltage command. Accordingly, noise may be reduced during operation of the motor (250).

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（200）可以包括逆变器（420），其根据切换操作将直流电力转换为交流电力，并将转换的交流电力输出到电动机（250）;输出电流检测器（E） 流过电动机的输出电流（250），以及基于检测到的输出电流来控制逆变器（420）的控制器（430）。 控制器（430）改变载波频率，基于改变的载波频率改变电压命令，并且基于改变的载波频率和改变的电压命令将逆变器切换控制信号输出到逆变器（420）。 因此，在马达（250）的操作期间噪声可能会降低。