TY - GEN
T1 - Unregulated bus operation of server-to-virtual bus differential power processing for data centers
AU - Candan, Enver
AU - Shenoy, Pradeep S.
AU - Pilawa-Podgurski, Robert C.N.
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/5/17
Y1 - 2017/5/17
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85019989466&partnerID=8YFLogxK
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U2 - 10.1109/APEC.2017.7930918
DO - 10.1109/APEC.2017.7930918
M3 - Conference contribution
AN - SCOPUS:85019989466
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1632
EP - 1639
BT - 2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Y2 - 26 March 2017 through 30 March 2017
ER -