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：US12144157B2

公开(公告)日：2024-11-12

申请号：US17791016

申请日：2021-01-05

Applicant: LG Electronics Inc.

Inventor： Seungwoo Chae ,  Taeyoung Park ,  Jinho Cho

IPC: H05K7/20 ,  H02M7/00

Abstract: A converter for an air conditioner includes a substrate, an inductor that is disposed in one side of the substrate and includes a core and a coil wound around the core, a switching element that is disposed in one side of the substrate and selectively controls a flow of a circuit, and a heat sink for absorbing heat generated from the switching element by contacting the switching element. A lead-in hole is formed in one side of the substrate, and at least a portion of the inductor is disposed in the lead-in hole, thereby quickly discharging the heat generated by the inverter and more efficiently using a space.

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.