公开(公告)号：US20210384711A1

公开(公告)日：2021-12-09

申请号：US17276900

申请日：2019-08-29

Applicant: LS ELECTRIC CO., LTD.

Inventor： Hyukil KWON ,  Kwangkyu HWANG ,  Kwanseung AN

IPC: H02B1/20 ,  H02J9/06 ,  H02M3/00 ,  H02M7/00

Abstract: A power supply apparatus includes a plurality of power modules for receiving alternating current power to provide the power to a load; an uninterruptible supply module to supply self-power to the load; an inverter module installed on one side of the power modules or the uninterruptible supply module to convert the power and provide converted power to the load; direct current bus bars provided inside enclosures of the power modules, the uninterruptible supply module, and the inverter module, respectively; and a connection bus bar for connecting adjacent direct current bus bars, wherein in the power modules and the uninterruptible supply module, an alternating current/direct current converter or a direct current/direct current converter is provided in the upper portion of the direct current bus bar, or the alternating current/direct current converter or the direct current/direct current converter is provided in the lower portion of the direct current bus bar.