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公开(公告)号：US20150354881A1
公开(公告)日：2015-12-10
申请号：US14733570
申请日：2015-06-08
Applicant: LG ELECTRONICS INC.
Inventor： Gwigeun Park , Jaeboo Eom , Kihong Kim
CPC classification number: F25B49/025 , F24F11/30 , F25B13/00 , F25B2600/02 , F25B2600/021 , F25B2600/024 , F25B2700/151 , H02P3/22 , H02P27/06 , Y02B30/741
Abstract: A motor driving device and an air conditioner including the same are disclosed. The motor driving device includes a rectifier to rectify input AC power, a boost converter to boost power rectified by the rectifier, a capacitor to store a pulsating voltage from the boost converter, an inverter comprising a plurality of switching elements, the inverter transforming AC power, using a voltage across the capacitor, and outputting the transformed power to a motor, a regenerative power consuming unit arranged between the capacitor and the inverter, to consume regenerative power from the motor, and a switching driving unit to output a switching control signal to a switching element in the regenerative power consuming unit while outputting an operation control signal to an inverter controller when the voltage across the capacitor is equal to or higher than a predetermined voltage.
Abstract translation: 公开了一种电动机驱动装置和包括该电动机驱动装置的空调装置。 马达驱动装置包括：整流器，用于整流输入交流电;升压转换器，用于升压由整流器整流的功率;电容器，用于存储来自升压转换器的脉动电压;逆变器包括多个开关元件;逆变器变换交流电; 使用电容器两端的电压，将变换后的功率输出到电动机，配置在电容器和逆变器之间的再生电力消耗部，消耗来自电动机的再生电力;切换驱动部，将切换控制信号输出到 当再生电力消耗单元中的开关元件在电容器两端的电压等于或高于预定电压时，向逆变器控制器输出操作控制信号。
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2.发明授权公开(公告)号：US10215426B2
公开(公告)日：2019-02-26
申请号：US15078129
申请日：2016-03-23
Applicant: LG ELECTRONICS INC.
Inventor： Eungho Kim , Jinsoo Kim , Gwigeun Park
IPC: F04D27/00 , F24F1/38 , F04D25/06 , F04D29/32 , H02P21/00 , H02M7/5387 , F24F11/30 , F24F11/77 , F25B13/00 , F25B49/02
Abstract: An outdoor fan motor driving device and an air conditioner including an outdoor fan motor driving device are provided, which may include an inverter to convert DC power into AC power according to a switching operation and to output the converted AC power to an outdoor fan motor, an output current detector to detect phase currents flowing in the outdoor fan motor, and a controller to control the inverter based on the detected phase currents. When the outdoor fan motor is rotated by external wind, in a state in which all of lower arm switching elements, among upper arm switching elements and lower arm switching elements of the inverter, are turned on before the outdoor fan motor is driven, with the result that levels of the phase currents flowing in the outdoor fan motor are between a first level and a second level, the controller may control the outdoor fan motor such that a rotational speed of the outdoor fan motor is increased while the outdoor fan motor is rotated in a first direction and then rotated in a second direction opposite to the first direction during a speed increase period of the outdoor fan motor after an alignment period during which a rotor of the outdoor fan motor is aligned when the outdoor fan motor is driven.
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公开(公告)号：US20170063248A1
公开(公告)日：2017-03-02
申请号：US15249594
申请日：2016-08-29
Applicant: LG ELECTRONICS INC.
Inventor： Jongwan LEE , Eungho Kim , Gwigeun Park
CPC classification number: H02M5/458 , F24F1/20 , F24F5/001 , F24F11/30 , F24F11/46 , F24F11/56 , F24F11/62 , F24F11/64 , F25B13/00 , F25B31/02 , F25B2700/151 , H02M1/12 , H02M3/335 , H02M3/33561 , H02P27/08
Abstract: A power conversion apparatus includes a rectifier to rectify a voltage of an input alternating current (AC) power source and a voltage drop device to output a dropped voltage using the voltage from the rectifier, and the voltage drop device includes a transformer and a communication voltage output device provided at a secondary side of the transformer to output a first direct current (DC) voltage for operation of a communication device. The communication voltage output device includes a first resistor provided at the secondary side of the transformer to reduce an output change rate of the first DC voltage and first and second zener diodes connected between the first resistor and ground to limit an upper limit of the first DC voltage. Accordingly, it is possible to stably supply a voltage to a communication unit while reducing standby power.
Abstract translation: 电力转换装置包括整流器，用于整流输入交流（AC）电源的电压和降压装置，以使用来自整流器的电压输出下降的电压，并且该压降装置包括变压器和通信电压 输出装置设置在变压器的次级侧，以输出用于通信装置的操作的第一直流（DC）电压。 通信电压输出装置包括设置在变压器的次级侧的第一电阻器，以减小第一直流电压的输出变化率和连接在第一电阻器和地之间的第一和第二齐纳二极管，以限制第一直流电压的上限 电压。 因此，可以在降低待机功率的同时稳定地向通信单元提供电压。
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公开(公告)号：US09793787B2
公开(公告)日：2017-10-17
申请号：US14566368
申请日：2014-12-10
Applicant: LG ELECTRONICS INC.
Inventor： Wonwoo Cho , Gwigeun Park
CPC classification number: H02M1/08 , F25B31/02 , H02M5/44 , H02M7/483 , H02M2001/0006 , H02P6/14 , H03K17/60 , H03K2217/0081
Abstract: A motor driving device and an air conditioner including the same are disclosed. The disclosed motor driving device includes a multi-level converter to receive AC power, thereby outputting multi-level power, the multi-level converter including plural diodes and plural switching elements, plural capacitors for storing the multi-level power from the multi-level converter, and a gate drive signal generator to generate gate drive signals for the switching elements of the multi-level converter. The gate drive signal generator includes a gate drive power source to supply a gate drive voltage, a gate driver to generate the gate drive signals, using the gate drive voltage, a gate capacitor connected to both terminals of the gate driver, and a gate switching element connected between one end of the gate capacitor and one end of one of the plural capacitors. Accordingly, gate drive signals for the multi-level converter can be generated.
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Patent Agency Ranking
公开(公告)号：US09534823B2
公开(公告)日：2017-01-03
申请号：US14733570
申请日：2015-06-08
Applicant: LG ELECTRONICS INC.
Inventor： Gwigeun Park , Jaeboo Eom , Kihong Kim
CPC classification number: F25B49/025 , F24F11/30 , F25B13/00 , F25B2600/02 , F25B2600/021 , F25B2600/024 , F25B2700/151 , H02P3/22 , H02P27/06 , Y02B30/741
Abstract: A motor driving device and an air conditioner including the same are disclosed. The motor driving device includes a rectifier to rectify input AC power, a boost converter to boost power rectified by the rectifier, a capacitor to store a pulsating voltage from the boost converter, an inverter comprising a plurality of switching elements, the inverter transforming AC power, using a voltage across the capacitor, and outputting the transformed power to a motor, a regenerative power consuming unit arranged between the capacitor and the inverter, to consume regenerative power from the motor, and a switching driving unit to output a switching control signal to a switching element in the regenerative power consuming unit while outputting an operation control signal to an inverter controller when the voltage across the capacitor is equal to or higher than a predetermined voltage.
Abstract translation: 公开了一种电动机驱动装置和包括该电动机驱动装置的空调装置。 马达驱动装置包括：整流器，用于整流输入交流电;升压转换器，用于升压由整流器整流的功率;电容器，用于存储来自升压转换器的脉动电压;逆变器包括多个开关元件;逆变器变换交流电; 使用电容器两端的电压，将变换后的功率输出到电动机，配置在电容器和逆变器之间的再生电力消耗部，消耗来自电动机的再生电力;切换驱动部，将切换控制信号输出到 当再生电力消耗单元中的开关元件在电容器两端的电压等于或高于预定电压时，向逆变器控制器输出操作控制信号。
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公开(公告)号：US09502996B2
公开(公告)日：2016-11-22
申请号：US14566282
申请日：2014-12-10
Applicant: LG ELECTRONICS INC.
Inventor： Wonwoo Cho , Gwigeun Park , Youngsoo Seo
CPC classification number: H02P5/00 , F25B49/025 , H02M1/4225 , H02M5/44 , H02M2001/0058 , H02M2003/1586 , Y02B70/126 , Y02B70/1491
Abstract: A motor driving device and an air conditioner including the same are disclosed. The disclosed motor driving device includes a rectifier to rectify input AC power, and a converter to convert the power rectified by the rectifier into DC power. The converter includes an interleaved converter including a first converter and a second converter, which operate in an interleaved manner. The first converter of the interleaved converter includes a first boost converter, and a first resonator including a passive element connected to the first boost converter, to perform resonation. Accordingly, it is possible to reduce switching loss generated upon power conversion.
Abstract translation: 公开了一种电动机驱动装置和包括该电动机驱动装置的空调机。 所公开的电动机驱动装置包括整流器来整流输入交流电力，以及转换器，将由整流器整流的功率转换成直流电力。 转换器包括交错转换器，其包括以交错方式操作的第一转换器和第二转换器。 交错转换器的第一转换器包括第一升压转换器和包括连接到第一升压转换器的无源元件的第一谐振器，以执行谐振。 因此，可以减少电力转换时产生的开关损耗。
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公开(公告)号：US11296495B2
公开(公告)日：2022-04-05
申请号：US16900032
申请日：2020-06-12
Applicant: LG Electronics Inc.
Inventor： Soongkeun Lee , Gwigeun Park , Wonwoo Lee , Wonjae Yi
Abstract: A surge protection circuit includes: a power supply unit configured to supply first power, a filter unit configured to filter noise of the first power while a current corresponding to a surge flows through the filter unit, a motor unit provided with at least one motor, a control unit configured to control the motor unit according to an operation mode, and a rectification unit provided with at least one protection capacitor and configured to rectify the filtered first power into second power. The filter unit is connected with a ground to thereby apply the current to the filter unit through the ground. A first impedance is generated by the filter unit and the rectification unit and a second impedance is generated by the control unit and the motor unit and a value of the first impedance is less than a value of the second impedance.
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公开(公告)号：US09941807B2
公开(公告)日：2018-04-10
申请号：US15249594
申请日：2016-08-29
Applicant: LG ELECTRONICS INC.
Inventor： Jongwan Lee , Eungho Kim , Gwigeun Park
IPC: H02M5/458 , H02M3/335 , F24F1/20 , F24F5/00 , F24F11/00 , F25B13/00 , F25B31/02 , H02P27/08 , H02M1/12
CPC classification number: H02M5/458 , F24F1/20 , F24F5/001 , F24F11/30 , F24F11/46 , F24F11/56 , F24F11/62 , F24F11/64 , F25B13/00 , F25B31/02 , F25B2700/151 , H02M1/12 , H02M3/335 , H02M3/33561 , H02P27/08
Abstract: A power conversion apparatus includes a rectifier to rectify a voltage of an input alternating current (AC) power source and a voltage drop device to output a dropped voltage using the voltage from the rectifier, and the voltage drop device includes a transformer and a communication voltage output device provided at a secondary side of the transformer to output a first direct current (DC) voltage for operation of a communication device. The communication voltage output device includes a first resistor provided at the secondary side of the transformer to reduce an output change rate of the first DC voltage and first and second zener diodes connected between the first resistor and ground to limit an upper limit of the first DC voltage. Accordingly, it is possible to stably supply a voltage to a communication unit while reducing standby power.
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公开(公告)号：US09625190B2
公开(公告)日：2017-04-18
申请号：US14733601
申请日：2015-06-08
Applicant: LG ELECTRONICS INC.
Inventor： Jongwan Lee , Gwigeun Park , Eungho Kim
CPC classification number: F25B31/02 , F24F11/30 , F24F11/77 , F25B13/00 , F25B49/025 , F25B2313/005 , F25B2313/006 , F25B2313/02741 , F25B2600/021 , F25B2700/151 , H02M1/4225 , H02M2001/007 , H02M2001/008 , H02P5/74 , H02P27/06 , Y02B30/741 , Y02B30/746 , Y02B70/126
Abstract: A motor driving device and an air conditioner including the same are disclosed. The motor driving device includes a rectifier to rectify input AC power, a boost converter for boosting the rectified power from the rectifier, a first capacitor to store a pulsating voltage from the boost converter, a first inverter for outputting, to a compressor motor, AC power transformed using a voltage across the first capacitor, a second capacitor to store the rectified power from the rectifier, a second inverter for outputting, to a first fan motor, AC power transformed using a voltage across the second capacitor, and a voltage dropper to drop the voltage across the second capacitor, and to output the dropped voltage. In accordance with this configuration, the compressor motor and fan motor can be driven, using the same input AC power, even though the motor driving device uses a low-capacitance capacitor.
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