公开(公告)号：US20230327544A1

公开(公告)日：2023-10-12

申请号：US18025450

申请日：2021-09-10

Applicant: LG INNOTEK CO., LTD.

Inventor： Kwang Soon JUNG ,  Seung Min LEE

IPC: H02M1/42 ,  H02M7/217

CPC classification number: H02M1/4208 ,  H02M7/217

Abstract: A bridgeless power factor-improving converter according to one embodiment of the present invention comprises: a power input unit for receiving power; a first rectifying unit and a second rectifying unit for rectifying the received power; and a power factor-improving switch unit that is connected to the first rectifying unit and the second rectifying unit and improves a power factor according to an on/off operation. The second rectifying unit includes a second upper switch and a second lower switch, wherein the second upper switch is driven by being connected to a driving power source of the power factor-improving switch unit.

公开(公告)号：US20230031025A1

公开(公告)日：2023-02-02

申请号：US17789238

申请日：2020-11-25

Applicant: LG INNOTEK CO., LTD.

Inventor： Soo San KIM ,  Seung Min LEE ,  Jae Yeop JUNG

IPC: H02J3/38 ,  H02J7/35 ,  H02M1/15 ,  H02M1/00 ,  H02J7/34 ,  H02S10/00

Abstract: A photovoltaic power generation system according to an embodiment of the present invention comprises: a first converter for converting and outputting power applied from a photovoltaic power generation panel; a second converter for receiving, via a first input/output terminal, the power output by the first converter, converting same, and outputting same via a second input/output terminal, or receiving power from the second input/output terminal, converting same, and outputting same via the first input/output terminal; a third converter for receiving power from the first converter or the second converter and charging an energy storage device, or transmitting power charged in the energy storage device to the second converter; and an active power filter for reducing ripples in the second converter, wherein power stored in the active power filter is transmitted to the first converter.

公开(公告)号：US20250007387A1

公开(公告)日：2025-01-02

申请号：US18711196

申请日：2022-11-18

Applicant: LG INNOTEK CO., LTD.

Inventor： Seung Min LEE ,  Dong Keun YOON ,  Seong Jae JANG

IPC: H02M1/10 ,  H02J3/32 ,  H02J7/35 ,  H02S40/30

Abstract: The present invention relates to an auxiliary power supply device for generating auxiliary power of a power conversion device, the auxiliary power supply device comprising: a first auxiliary power supply unit which receives power applied from a photovoltaic module and generates auxiliary power therefrom; a second auxiliary power supply unit which receives power applied from a grid and generates auxiliary power therefrom; and a driving unit which can selectively drive the second auxiliary power supply unit according to the magnitude of voltage of the photovoltaic module. Accordingly, the present invention has an advantage in that an auxiliary power supply can be normally operated even in an environment where photovoltaic power generation is not performed.

公开(公告)号：US20230006569A1

公开(公告)日：2023-01-05

申请号：US17782092

申请日：2020-11-17

Applicant: LG INNOTEK CO., LTD.

Inventor： Soo San KIM ,  Seung Min LEE ,  Jae Yeop JUNG

IPC: H02M7/219 ,  H02M1/44 ,  B60L53/22

Abstract: The AC/DC converter according to one embodiment of the present invention comprises: a power unit comprising a plurality of power input lines; a main bridge circuit into which input power is input via the power unit; a relay connected in parallel to both ends of any one of the power input lines; and a control unit for controlling the opening/closing of the relay on the basis of the type of input power.

公开(公告)号：US20230292440A1

公开(公告)日：2023-09-14

申请号：US18020985

申请日：2021-08-24

Applicant: LG INNOTEK CO., LTD.

Inventor： Seung Min LEE ,  Kwang Soon JUNG

IPC: H05K1/18 ,  H05K1/02 ,  H05K1/05 ,  H05K3/34

CPC classification number: H05K1/181 ,  H05K1/0203 ,  H05K1/05 ,  H05K3/3421 ,  H05K3/3447

Abstract: A printed circuit board module comprises: a first substrate; a second substrate disposed on the first substrate and including a first region and a second region; a first element disposed on the front surface of the first region; and a second element disposed on the front surface of the second region, wherein the lower end of the first region and the lower end of the second region are disposed in a stepped manner.