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。