Open AccessHighly Power‐Efficient Rack‐Level DC Power Architecture Combined with Node‐Level DC UPS
Author(s) -
Kwon Won Ok,
Seo Hae Moon,
Choi Pyung
Publication year - 2011
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.11.0210.0306
Subject(s) - rack , power (physics) , ac adapter , node (physics) , uninterruptible power supply , electrical engineering , engineering , switched mode power supply , electronic engineering , voltage , computer science , mechanical engineering , physics , structural engineering , quantum mechanics
This letter presents a highly efficient rack‐level DC power architecture combined with a node‐level DC uninterruptible power supply (UPS). The proposed system can provide almost the equivalent power efficiency of a high‐voltage DC data center without any change in the existing power infrastructure. The node‐level DC UPS combined with a power distribution board provides high power efficiency as well as lower UPS installation costs. Implemented on a rack, the entire power system can be monitored through a network.