公开(公告)号：US11710963B2

公开(公告)日：2023-07-25

申请号：US17154292

申请日：2021-01-21

Applicant: LG Electronics Inc.

Inventor： Seung Wook Hyun ,  Chang Jin Lim ,  Sun Young Park ,  Jungmin Kim

IPC: H02J3/00 ,  H02J3/46 ,  H02J3/40

CPC classification number: H02J3/0012 ,  H02J3/40 ,  H02J3/46

Abstract: A power conditioning system (PCS) includes: a grid blackout determiner, a voltage controller, and a processor electrically connected to the grid blackout determiner and the voltage controller. The processor is configured to identify a state of a grid as a blackout state or an unstable state based on at least one of an amplitude or a frequency of a voltage of the grid that is detected by the grid blackout determiner, control the voltage controller to adjust, based on the identified state of the grid being the blackout state or the unstable state, load voltage input to the voltage controller to be equal to a command voltage, and adjust, based on the identified state of the grid being the blackout state or the unstable state, a first frequency of the detected voltage of the grid to a second frequency that is different from the first frequency.

公开(公告)号：US11670943B2

公开(公告)日：2023-06-06

申请号：US17380213

申请日：2021-07-20

Applicant: LG ELECTRONICS INC.

Inventor： Seungwook Hyun ,  Sunyoung Park ,  Changjin Lim ,  Jungmin Kim

IPC: H02J3/12 ,  H02J3/38

CPC classification number: H02J3/12 ,  H02J3/38

Abstract: A control method of a power control device includes: receiving power from a power supply, distributing the power to at least one of a plurality of power conversion systems (PCSs), and transferring the power to a load using the at least one PCS. The power is distributed based on a load amount of power of each of the plurality of PCSs.