US 12,009,695 B2
Power conversion system
Jun Chen, Shanghai (CN); Tsu-Hua Ai, Taoyuan (TW); Changyong Wang, Shanghai (CN); Yansong Lu, Shanghai (CN); and Jun Liu, Shanghai (CN)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by Delta Electronics, Inc., Taoyuan (TW)
Filed on Aug. 11, 2022, as Appl. No. 17/886,305.
Claims priority of application No. 202110983920.X (CN), filed on Aug. 25, 2021.
Prior Publication US 2023/0068452 A1, Mar. 2, 2023
Int. Cl. H02J 9/06 (2006.01); H02J 7/00 (2006.01); H02J 7/04 (2006.01)
CPC H02J 9/062 (2013.01) [H02J 7/0048 (2020.01); H02J 7/00712 (2020.01); H02J 7/04 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A power conversion system coupled between a first power grid, a second power grid and a load, the power conversion system comprising:
a battery;
a first converter electrically connected between the first power grid and the battery, configured to selectively convert a first input power from the first power grid into a first charging power when the first power grid is operated normally; and
a second converter electrically connected between the second power grid and the load, configured to convert a second input power from the second power grid into an output power when the second power grid is operated normally,
wherein the battery is electrically coupled with the second converter, and a backup power from the battery is converted into the output power by the second converter when the second power grid is not operated normally, wherein the first converter is a bidirectional converter, further configured to selectively convert the storage power in the battery into a feedback power, and the feedback power is provided to the first power grid.