公开(公告)号：US20230006465A1

公开(公告)日：2023-01-05

申请号：US17720462

申请日：2022-04-14

Applicant: DELTA ELECTRONICS, INC.

Inventor： Kai-Wei HU ,  Yen-Hsun CHEN ,  Chia-Tse LEE ,  Lei-Chung HSING

IPC: H02J9/06 ,  H02J7/02 ,  H02J7/00

Abstract: A power supply apparatus is coupled to an AC power source, a critical load, and a general load. The power supply apparatus includes a UPS, a generator system, a power conversion system, and a controller. The power conversion system includes a first power conversion path and a second power conversion path. The first power conversion path is connected to the critical load and an output side, and the second power conversion path is connected to the general load and an input side. The first power conversion path and the second power conversion path are jointly connected to a DC bus. When the controller determines that the AC power source is abnormal, the controller controls disconnecting the AC power source, and activates the UPS to supply power to the critical load so as to enable the first power conversion path and disable the second power conversion path.