Unregulated bus operation of server-to-virtual bus differential power processing for data centers

Enver Candan, Pradeep S. Shenoy, Robert C.N. Pilawa-Podgurski

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

Abstract

Series-stacking and differential power processing techniques have been proposed for data center power delivery applications in order to drastically increase power conversion efficiency in the server racks. Although above 99% system-level efficiency is achieved in the recent literature for steady-state and hot-swapped operation of the series-stacked servers, reported works required a well-regulated dc bus which may not be compatible with battery backup systems. This paper presents a control method and associated hardware which achieves unregulated bus operation of the series-stacked server power delivery architecture for data centers. The experimental results demonstrate 99.4% system-level power conversion efficiency on a four-server testbed that is energized by a decaying dc bus, verifying the proposed control ideal.

Original languageEnglish (US)
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1632-1639
Number of pages8
ISBN (Electronic)9781509053667
DOIs
StatePublished - May 17 2017
Event32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States
Duration: Mar 26 2017Mar 30 2017

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Other

Other32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
CountryUnited States
CityTampa
Period3/26/173/30/17

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Candan, E., Shenoy, P. S., & Pilawa-Podgurski, R. C. N. (2017). Unregulated bus operation of server-to-virtual bus differential power processing for data centers. In 2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017 (pp. 1632-1639). [7930918] (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2017.7930918