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：US11296632B2

公开(公告)日：2022-04-05

申请号：US16929636

申请日：2020-07-15

Applicant: LG Electronics Inc.

Inventor： Jungsong Moon ,  Seongju Kim ,  Donggeun Lee

IPC: H02P21/09 ,  H02P21/18 ,  H02P21/22 ,  H02P27/12

Abstract: A motor driving apparatus and a control method thereof, including a dc-link capacitor configured to store DC power, an inverter including a plurality of switching elements and converting the DC power stored in the dc-link capacitor into AC power to output the power to a motor, a dc-link resistor element disposed between the dc-link capacitor and the inverter; and a controller configured to control an operation of the inverter. The controller calculates a phase difference between a first reference voltage vector among a plurality of reference voltage vectors that are preset on the space vector and a voltage command, generates a switching frequency, determines a first operating point located in a dead band that is a one-phase current undetectable area in one switching cycle and a second operating point located at an outer position including a boundary of the dead band, and controls operation of the plurality of switching elements.

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.