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公开(公告)号：US11139760B2
公开(公告)日：2021-10-05
申请号：US16767934
申请日：2018-11-27
申请人： LG Electronics Inc.
发明人： Hansu Jung , Dongwook Kim , Minho Jang
摘要： 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.
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公开(公告)号：US10793996B2
公开(公告)日：2020-10-06
申请号：US16207909
申请日：2018-12-03
申请人： LG ELECTRONICS INC.
发明人： Ilman Seo , Deokjoon Jeong , Minho Jang
IPC分类号： D06F58/30 , D06F103/00 , D06F103/02 , D06F103/34 , D06F103/44 , D06F105/46
摘要： Disclosed are a dryer and a method of controlling the same, the dryer which is capable of: quickly and accurately determining an amount of laundry loaded in the dryer and controlling a drying operation according to the amount of the laundry: measuring a current supplied to rotate the drum and extracting a force applied to laundry in the drum to measure an amount of the laundry, thereby minimizing an error in the amount of laundry and thus enhancing accuracy of the measurement and improving a drying time; setting a drying time in consideration of both a calculated amount of laundry and a type of the laundry, such that damage to the laundry is prevented and over-drying or less-drying of the laundry is solved, thereby efficiently drying the laundry.
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公开(公告)号：US10760203B2
公开(公告)日：2020-09-01
申请号：US16208036
申请日：2018-12-03
申请人： LG Electronics Inc.
发明人： Ilman Seo , Deokjoon Jeong , Minho Jang
IPC分类号： D06F58/30 , D06F58/08 , D06F58/38 , D06F103/00 , D06F103/02 , D06F103/34 , D06F103/44 , D06F105/46
摘要： Disclosed are a dryer and a method of controlling the same, the dryer which is capable of: quickly and accurately determining an amount of laundry loaded in the dryer and controlling a drying operation according to the amount of the laundry: measuring a current supplied to rotate the drum and extracting a force applied to laundry in the drum to measure an amount of the laundry, thereby minimizing an error in the amount of laundry and thus enhancing accuracy of the measurement and improving a drying time; setting a drying time in consideration of both a calculated amount of laundry and a type of the laundry, such that damage to the laundry is prevented and over-drying or less-drying of the laundry is solved, thereby efficiently drying the laundry; and setting a drying time or a rotation speed during a drying operation according to an amount of laundry.
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公开(公告)号：US09708745B2
公开(公告)日：2017-07-18
申请号：US14535702
申请日：2014-11-07
申请人： LG ELECTRONICS INC.
发明人： Hansu Jung , Soongkeun Lee , Minho Jang
CPC分类号： D06F37/304 , D06F33/02 , D06F2202/12 , D06F2204/10 , H02P6/182 , Y02B40/52
摘要： 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.
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公开(公告)号：US11463033B2
公开(公告)日：2022-10-04
申请号：US16739690
申请日：2020-01-10
申请人： LG Electronics Inc.
发明人： Kwangsik Kim , Minho Jang , Hansu Jung
摘要： 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.
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公开(公告)号：US10883218B2
公开(公告)日：2021-01-05
申请号：US15165840
申请日：2016-05-26
申请人： LG ELECTRONICS INC.
发明人： Hyunjin Kim , Changwoo Son , Minho Jang
摘要： A laundry treatment machine includes a wash tub, a pulsator provided inside the wash tub and to be rotated, a motor to rotate at least one of the wash tub and the pulsator, a clutch to selectively transmit torque of the motor to at least one of the wash tub and the pulsator, a clutch drive unit to control driving of the clutch unit, and a controller to control the motor to repeat rotation and braking in a first direction a first number of times during a first time period after operation of the clutch is changed. With this configuration, in the top-loading type laundry treatment machine, the coupling force of the clutch may be increased when operation of the clutch is changed.
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公开(公告)号：US11603616B2
公开(公告)日：2023-03-14
申请号：US15728725
申请日：2017-10-10
申请人： LG ELECTRONICS INC.
发明人： Minho Jang , Jaegwang Bae , Hoonbong Lee
IPC分类号： D06F34/18 , D06F33/32 , D06F23/02 , D06F37/06 , D06F37/26 , D06F37/38 , D06F103/04 , D06F103/26 , D06F103/38 , D06F103/46 , D06F105/00 , D06F105/46 , D06F105/48 , D06F105/58 , D06F105/60 , D06F33/40 , D06F33/44
摘要： A washing machine and a method of controlling the same are disclosed. The amount of laundry that is introduced into the washing machine is measured using gravity and inertia applied during the operation of the motor, whereby it is possible to precisely calculate the amount of laundry and to minimize the effects of the initial position of the laundry and the movement of the laundry. In addition, the current value of the motor that is operated is used to measure the amount of laundry without a sensor. Furthermore, the amount of laundry is measured at the rotational speed of the motor at which the laundry clings to the drum, whereby it is possible to minimize an error due to the movement of the laundry to thus improve accuracy. Moreover, it is possible to determine the amount of laundry within a short time. Consequently, it is easy to commence the spin-drying operation, thereby reducing washing time and saving energy.
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公开(公告)号：US20180087209A1
公开(公告)日：2018-03-29
申请号：US15718217
申请日：2017-09-28
申请人： LG ELECTRONICS INC.
发明人： Hoonbong LEE , Minho Jang , Jaegwang Bae
IPC分类号： D06F39/00 , D06F33/02 , D06F37/26 , D06F39/04 , D06F39/08 , D06F37/22 , D06F39/14 , D06F37/06 , D06F37/30 , D06F37/38 , D06F39/02 , D06F23/02
CPC分类号： D06F39/003 , D06F23/02 , D06F33/02 , D06F37/06 , D06F37/22 , D06F37/266 , D06F37/304 , D06F37/38 , D06F39/005 , D06F39/008 , D06F39/022 , D06F39/045 , D06F39/085 , D06F39/087 , D06F39/088 , D06F39/14 , D06F2202/04 , D06F2202/065 , D06F2202/085 , D06F2202/12 , D06F2204/065 , D06F2204/084 , D06F2204/088 , D06F2222/00
摘要： An amount of laundry that is introduced into a washing machine is determined by identifying gravitational and inertia forces applied during the operation of a motor, whereby it is possible to precisely calculate the amount of laundry and to minimize the effects of the initial position of the laundry and the movement of the laundry. In addition, the current value of the motor that is operated is used to measure the amount of laundry without a sensor. Furthermore, the amount of laundry is measured at the rotational speed of the motor at which the laundry clings to the drum, whereby it is possible to minimize error due to the movement of the laundry to thus improve accuracy. Moreover, it is possible to determine the amount of laundry within a short time. Consequently, it is easy to commence the spin-drying operation, thereby reducing washing time and saving energy.
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公开(公告)号：US09899945B2
公开(公告)日：2018-02-20
申请号：US15232855
申请日：2016-08-10
申请人： LG ELECTRONICS INC.
发明人： Minho Jang , Junho Lee , Chungill Lee
摘要： 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.
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公开(公告)号：US09745685B2
公开(公告)日：2017-08-29
申请号：US14048892
申请日：2013-10-08
申请人： LG ELECTRONICS INC.
发明人： Minho Jang , Kyunghoon Kim , Hoonbong Lee
CPC分类号： D06F37/304 , D06F39/003 , D06F2202/12 , D06F2204/065
摘要： Disclosed are a laundry treatment machine and a method of operating the same. The method of operating the laundry treatment machine that processes laundry via rotation of a wash tub includes accelerating a rotational velocity of the tub during an accelerated rotating section, rotating the tub at a constant velocity during a constant velocity rotating section, and determining an amount of laundry in the tub based on a first output current flowing through a motor that is used to rotate the tub during the accelerated rotating section and a second output current flowing through the motor during the constant velocity rotating section. This ensures efficient sensing of amount of laundry.
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