公开(公告)号：US20150354870A1

公开(公告)日：2015-12-10

申请号：US14733601

申请日：2015-06-08

Applicant: LG ELECTRONICS INC.

Inventor： Jongwan LEE ,  Gwigeun PARK ,  Eungho KIM

IPC: F25B31/02 ,  H02P27/06

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.

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。 电动机驱动装置包括：整流器，用于整流输入交流电;升压转换器，用于升压整流器的整流功率;第一电容器，用于存储来自升压转换器的脉动电压;第一逆变器，用于向压缩机电动机输出AC 使用第一电容器两端的电压进行功率变换的第二电容器，用于存储来自整流器的整流功率的第二电容器;第二逆变器，用于向第一风扇电动机输出使用第二电容器两端的电压变换的AC功率;以及电压降器， 降低第二电容器两端的电压，并输出下降的电压。 根据该结构，即使电动机驱动装置使用低容量电容器，也可以使用相同的输入交流电力来驱动压缩机电动机和风扇电动机。

公开(公告)号：US20160282005A1

公开(公告)日：2016-09-29

申请号：US15078129

申请日：2016-03-23

Applicant: LG ELECTRONICS INC.

Inventor： Eungho KIM ,  Jinsoo KIM ,  Gwigeun PARK

IPC: F24F11/00 ,  F24F1/38 ,  F04D29/32 ,  F25B13/00 ,  F04D25/06 ,  F04D27/00

CPC classification number: F24F1/38 ,  F04D25/068 ,  F04D27/004 ,  F04D29/321 ,  F04D29/325 ,  F24F11/30 ,  F24F11/77 ,  F25B13/00 ,  F25B49/022 ,  F25B2313/0294 ,  F25B2700/15 ,  H02M7/5387 ,  H02P21/00

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.

Abstract translation: 提供一种室外风扇电动机驱动装置和包括室外风扇电动机驱动装置的空调机，其可以包括逆变器，其根据开关操作将DC电力转换成AC电力并将转换的AC电力输出到室外风扇电动机， 用于检测在室外风扇电动机中流动的相电流的输出电流检测器，以及基于检测到的相电流来控制逆变器的控制器。 当外部风扇电动机由外部风旋转时，在驱动室外风扇电动机之前，在逆变器的上臂开关元件和下臂开关元件中的所有下臂开关元件都被接通的状态下， 导致在室外风扇电动机中流动的相电流的电平处于第一电平和第二电平之间，控制器可以控制室外风扇电动机，使得室外风扇电动机的转速在室外风扇电动机旋转时增加 在户外风扇电动机的转子在驱动室外风扇电动机时对准的对准期间，在室外风扇电动机的增速期间，沿第一方向在与第一方向相反的第二方向旋转。

公开(公告)号：US20150354880A1

公开(公告)日：2015-12-10

申请号：US14733554

申请日：2015-06-08

Applicant: LG Electronics Inc.

Inventor： Gwigeun PARK ,  Jaeboo Eom ,  Kihong Kim

IPC: F25B49/02 ,  H02P27/06

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.

公开(公告)号：US20150171775A1

公开(公告)日：2015-06-18

申请号：US14566282

申请日：2014-12-10

Applicant: LG ELECTRONICS INC.

Inventor： Wonwoo CHO ,  Gwigeun PARK ,  Youngsoo SEO

IPC: H02P5/00 ,  F25B49/02

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装置。 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。

公开(公告)号：US20150171727A1

公开(公告)日：2015-06-18

申请号：US14566368

申请日：2014-12-10

Applicant: LG ELECTRONICS INC.

Inventor： Wonwoo CHO ,  Gwigeun PARK

IPC: H02M1/08 ,  H02P6/14 ,  F25B31/02

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.

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。 所公开的电动机驱动装置包括用于接收AC电力的多电平转换器，从而输出多电平电力，所述多电平转换器包括多个二极管和多个开关元件，多个用于存储来自多电平的多电平电力的电容器 转换器和栅极驱动信号发生器，以产生用于多电平转换器的开关元件的栅极驱动信号。 栅极驱动信号发生器包括使用栅极驱动电压提供栅极驱动电压的栅极驱动电源，用于产生栅极驱动信号的栅极驱动器，连接到栅极驱动器的两个端子的栅极电容器和栅极开关 元件连接在栅极电容器的一端和多个电容器中的一个的一端之间。 因此，可以产生用于多电平转换器的栅极驱动信号。