公开(公告)号：US09732991B2

公开(公告)日：2017-08-15

申请号：US14582905

申请日：2014-12-24

Applicant: LG ELECTRONICS INC.

Inventor： Joonsik An ,  Sangyoung Kim ,  Taeyoung Park ,  Kyungmin Kim

IPC: H02P27/04 ,  F25B1/00 ,  H02M1/42 ,  H02M5/44 ,  H02P6/28

CPC classification number: F25B1/005 ,  H02M1/4225 ,  H02M5/44 ,  H02P6/28 ,  Y02B70/126

Abstract: A motor driving device includes a rectifier to rectify inputted alternating current (AC) power, a boost converter to boost and to output the power rectified by the rectifier, and an inverter including a plurality of switching devices to output converted AC power to a motor using a voltage from the boost converter. Accordingly, a voltage utilization ratio of a voltage input to an inverter in the motor driving device using a low-capacitance capacitor is enhanced.

公开(公告)号：US10483893B2

公开(公告)日：2019-11-19

申请号：US15692029

申请日：2017-08-31

Applicant: LG ELECTRONICS INC.

Inventor： Jungsong Moon ,  Taeyoung Park ,  Sangyoung Kim

IPC: H02P21/24 ,  H02M7/44 ,  H02P21/12 ,  H02M7/5387 ,  H02M1/00

Abstract: The present disclosure relates to a motor driving apparatus and a home appliance including the same. The motor driving apparatus in accordance with an embodiment of the present disclosure, comprises a DC-stage capacitor, a three-phase upper arm and lower arm switching element, an inverter to convert DC power from the DC-stage capacitor to an AC power by a switching operation and output the converted AC power to a motor, and a controller to control the inverter, wherein the controller controls the switching elements in the inverter based on a space vector-based pulse width variable, and controls a turn-on time of the switching elements to be shifted, wherein continuous first and second switching periods of the switching elements is changed to one switching period by shifting the a turn-on time of the switching elements. Accordingly, when the inverter is switched, noise can be reduced while reducing switching loss.

公开(公告)号：US20150180384A1

公开(公告)日：2015-06-25

申请号：US14582905

申请日：2014-12-24

Applicant: LG ELECTRONICS INC.

Inventor： Joonsij An ,  Sangyoung Kim ,  Taeyoung Park ,  Kyungmin Kim

IPC: H02P6/00 ,  F25B1/00

CPC classification number: F25B1/005 ,  H02M1/4225 ,  H02M5/44 ,  H02P6/28 ,  Y02B70/126

Abstract: A motor driving device includes a rectifier to rectify inputted alternating current (AC) power, a boost converter to boost and to output the power rectified by the rectifier, and an inverter including a plurality of switching devices to output converted AC power to a motor using a voltage from the boost converter. Accordingly, a voltage utilization ratio of a voltage input to an inverter in the motor driving device using a low-capacitance capacitor is enhanced.

Abstract translation: 电动机驱动装置包括整流器来整流输入的交流（AC）电力，升压转换器升压并输出由整流器整流的电力;以及逆变器，包括多个开关装置，以将转换的交流电力输出到电动机，使用 来自升压转换器的电压。 因此，提高使用低容量电容器的电动机驱动装置中输入到逆变器的电压的电压利用率。

公开(公告)号：US11174583B2

公开(公告)日：2021-11-16

申请号：US16654543

申请日：2019-10-16

Applicant: LG Electronics Inc.

Inventor： Sangyoung Kim ,  Sangho Cho

IPC: D06F39/08 ,  D06F39/10 ,  D06F33/69 ,  D06F58/45 ,  D06F58/22 ,  D06F58/24 ,  D06F105/34 ,  D06F105/36 ,  D06F58/20

Abstract: The present disclosure provides a method of controlling a laundry treating apparatus including a tub in which a drum accommodating clothing is rotatably disposed, a heat exchanger configured to perform heat exchange between air discharged from the tub and a refrigerant in a circulation flow path through which the air circulates, a filter configured to filter the air, a first cleaning mechanism configured to apply cleaning water to any one of the filter and the heat exchanger, and a second cleaning mechanism configured to apply the cleaning water to the other of the filter and the heat exchanger. The method includes measuring a flow rate while supplying water into the tub, and controlling, based on the flow rate, a first flow path control valve for regulating water supply to the first cleaning mechanism and a second flow path control valve for regulating water supply to the second cleaning mechanism.

公开(公告)号：US09742336B2

公开(公告)日：2017-08-22

申请号：US14205614

申请日：2014-03-12

Applicant: LG Electronics Inc.

Inventor： Jonghyun Jeon ,  Taeyoung Park ,  Jungsong Moon ,  Sangyoung Kim ,  Joonsik An

IPC: H02M5/42 ,  H02P27/06 ,  H02M7/155 ,  H02M7/06 ,  F24F11/02

CPC classification number: H02P27/06 ,  F24F11/89 ,  H02M7/06 ,  H02M7/1552

Abstract: A power converter and an air conditioner having the same, in which the power converter includes a rectifying unit configured to rectify an input AC current and an interleave converter that has a plurality of converters and that is configured to convert rectified output from the rectifying unit to DC power and output the converted DC power. The power converter also includes a capacitor connected to an output terminal of the interleave converter, and a converter controller configured to control the interleave converter. The converter controller controls the interleave converter by calculating a load level of both terminals of the capacitor and changing a number of operating converters in the plurality of converters of the interleave converter based on the determined load level of both terminals of the capacitor.