公开(公告)号：US10389252B2

公开(公告)日：2019-08-20

申请号：US15821967

申请日：2017-11-24

Applicant: LG ELECTRONICS INC.

Inventor： Sanghyeon Kim ,  Taeyoung Park ,  Jeongeon Oh

IPC: H02M3/335 ,  H01F27/24 ,  H01F27/28 ,  H02M1/08 ,  H05K1/09 ,  H05K1/16 ,  H05K1/18 ,  H02M3/158 ,  H02M1/00

Abstract: Provided are a power converting system and a power converting apparatus, which include an input unit that receives a direct current (DC) voltage from an external power source, a conversion unit including a plurality of switching circuits that convert the input DC voltage into a multi-phase AC voltage, a resonant unit including a single resonant inductor connected to each of the plurality of switching circuits, and an output unit that rectifies each phase of the multi-phase AC voltage which has been converted in the plurality of switching circuits and outputs a single DC voltage.

公开(公告)号：US10516331B2

公开(公告)日：2019-12-24

申请号：US15741227

申请日：2016-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Seungwoo Chae ,  Sanghyeon Kim ,  Jeongeon Oh

IPC: H02M1/14 ,  H02M7/06 ,  H02J3/38 ,  F24F3/00 ,  H02M3/158 ,  F24F11/62 ,  F24F11/46 ,  H02M1/42 ,  H02M5/44 ,  F24F11/88

Abstract: The present invention relates to a power conversion device and an air conditioner comprising the same. The power conversion device may include: an interleaved boost converter; a dc terminal capacitor; a load; and a controller for controlling the interleaved boost converter, wherein the controller controls the phase difference between a first boost converter and second boost converter of the interleaved boost converter so that the phase difference is a first phase difference in a first mode, and if a current ripple flowing in the dc terminal capacitor is a predetermined value or greater, the controller enters a second mode and controls the phase difference between the first boost converter and second boost converter so that the phase difference varies. Accordingly, the ripple current flowing into a capacitor disposed at the output terminal of an interleaved boost converter can be reduced.

公开(公告)号：US10447258B2

公开(公告)日：2019-10-15

申请号：US15848826

申请日：2017-12-20

Applicant: LG ELECTRONICS INC.

Inventor： Seungwoo Chae ,  Sanghyeon Kim ,  Jeongeon Oh

IPC: H03K17/08 ,  H03K17/082 ,  H03K17/14 ,  G01R19/00 ,  H03K17/567

Abstract: A circuit and a system may drive switching modules. The driving circuit and system are capable of controlling a detection level of a protection voltage of a switching module, by controlling a voltage of a detection circuit for detecting the protection voltage. This may be done based on control of a variable resistance.

公开(公告)号：US20180183425A1

公开(公告)日：2018-06-28

申请号：US15848826

申请日：2017-12-20

Applicant: LG ELECTRONICS INC.

Inventor： Seungwoo CHAE ,  Sanghyeon Kim ,  Jeongeon Oh

IPC: H03K17/08 ,  H03K17/567 ,  G01R19/00

CPC classification number: H03K17/08 ,  G01R19/0092 ,  H03K17/0828 ,  H03K17/14 ,  H03K17/567 ,  H03K2217/0027

Abstract: A circuit and a system may drive switching modules. The driving circuit and system are capable of controlling a detection level of a protection voltage of a switching module, by controlling a voltage of a detection circuit for detecting the protection voltage. This may be done based on control of a variable resistance.