公开(公告)号：US20210328547A1

公开(公告)日：2021-10-21

申请号：US17271672

申请日：2019-08-26

Applicant: LG INNOTEK CO., LTD.

Inventor： Sang Gyu CHOI ,  Jae Geun LEE ,  Jeong Heum LEE

IPC: H02S50/10 ,  H02S40/38 ,  G01R27/18 ,  H02M1/00

Abstract: An embodiment provides a DC-DC converter for sensing a grounded state and a method for controlling same in a photovoltaic energy storage system. Specifically, the converter can sense a grounded state on the basis of the magnitude of voltage applied to a resistor and provide a notification.

公开(公告)号：US20210313888A1

公开(公告)日：2021-10-07

申请号：US17266394

申请日：2019-08-20

Applicant: LG INNOTEK CO., LTD.

Inventor： Ju Young JANG ,  Soo Hong KIM ,  Jae Geun LEE

IPC: H02M3/158 ,  H02J3/38 ,  H02J7/35

Abstract: According to an embodiment, disclosed is a DC-DC converter in a solar-linked system, the DC-DC converter including: an initial charging circuit which connects an inverter with a first node and is used for charging an inverter-side capacitor; an intermediate capacitor; and a switching circuit connected in parallel to the intermediate capacitor and composed of a first switch and a second switch that are connected in series, wherein the initial charging circuit applies a voltage to a first node according to a received control signal, and performs charging of a battery.

公开(公告)号：US20210320518A1

公开(公告)日：2021-10-14

申请号：US17271845

申请日：2019-08-29

Applicant: LG INNOTEK CO., LTD.

Inventor： Jae Geun LEE

IPC: H02J7/35 ,  H02J3/38 ,  H02S40/38 ,  H02M3/156 ,  H02J7/00

Abstract: According to one embodiment, disclosed are a DC-DC converter for preventing the unnecessary consumption of a battery in a solar power-linked energy storage system, and a control method thereof. Particularly, a sensing switch is controlled according to a current mode, and thus unnecessary power consumption can be prevented. In addition, a method for operating a circuit breaker, related thereto, is disclosed.