公开(公告)号：US20250088001A1

公开(公告)日：2025-03-13

申请号：US18532859

申请日：2023-12-07

Applicant: Delta Electronics, Inc.

Inventor： Hsueh-Han LU ,  Ying-Chuan HUANG ,  Mu-Jhen LIN ,  Chao-Yuan LAI ,  Ya-Chen CHEN ,  Hung-Ren LAI

IPC: H02J3/28 ,  H02J7/00

Abstract: An energy storage system and a control method thereof are provided. The control method includes steps of: (a) providing an energy storage system including N energy storage modules; (b) obtaining a first sequence and a second sequence by sorting the N energy storage units based on the quantity of electricity in descending order and ascending order respectively; (c) determining a required power of the power grid according to a grid frequency; (d) when the required power is positive, controlling first X energy storage units in the first sequence to discharge for collectively providing an electrical energy, having same magnitude with the required power, to the power grid; and (e) when the required power is negative, controlling first Y energy storage units in the second sequence to collectively receive an electrical energy, having same magnitude with the required power, from the power grid for charging.