Medium voltage power distribution architecture with medium frequency isolation transformer for data centers

Bahaa Hafez, Harish S. Krishnamoorthy, Prasad Enjeti, Shehab Ahmed, Ira J. Pitel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Citations (Scopus)

Abstract

In this paper, a medium-voltage (MV) data center power distribution system (DC-PDS) architecture using medium-frequency (MF) link transformer isolation is introduced. The proposed approach significantly improves power density while maintaining high efficiency compared to conventional line-frequency based solutions. The approach also contributes to a reduction in PVC or copper used in conventional DC-PDS. First the MV transformed from the utility, is interfaced with a MV switch gear system and a diesel power generator (DPG) system. Then this MV is converted to the low voltages (LVs) required by the loads via MF transformer. The MF transformer primary side windings are connected to stacked AC-AC converters. The LV secondary windings are interfaced with several load systems and battery energy storage system (BESS) using different topologies like boost power factor corrector (PFC), PWM inverter, etc. The presence of MV switch gear and MF transformer in the architecture results in higher efficiency and power density.

Original languageEnglish
Title of host publicationAPEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3485-3489
Number of pages5
ISBN (Print)9781479923250
DOIs
Publication statusPublished - 2014
Event29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014 - Fort Worth, TX, United States
Duration: 16 Mar 201420 Mar 2014

Other

Other29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
CountryUnited States
CityFort Worth, TX
Period16/3/1420/3/14

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Hafez, B., Krishnamoorthy, H. S., Enjeti, P., Ahmed, S., & Pitel, I. J. (2014). Medium voltage power distribution architecture with medium frequency isolation transformer for data centers. In APEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition (pp. 3485-3489). [6803810] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2014.6803810