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Title: Direct 400 Vdc to 1 Vdc power conversion with input series output parallel connection for data center power supplies

Abstract

Data centers consume an ever-increasing amount of electricity because of the rapid growth of cloud computing and digital information storage. A high voltage point of load (HV POL) converter is proposed to convert the 400-VDC distribution voltage to 1-VDC within a single stage to increase the power conversion efficiency. A six-phase input series output parallel (ISOP) connected structure is implemented for the HV POL. The symmetrical controlled half bridge current doubler is selected as the converter topology in the ISOP structure. The full load efficiency is improved by 4% points compared with state of the art products. A voltage compensator has been designed in order to meet the strict dynamic voltage regulation requirement. A laboratory prototype has been built, and experimental results have been provided to verify the proposed HV POL with a single power conversion stage can meet the dynamic voltage regulation requirement for an on-board power supply with higher efficiency compared to the conventional architecture.

Authors:
 [1]; ORCiD logo [2];  [2];  [2];  [2]
  1. The University of Tennessee, Knoxville
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1474505
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: IEEE Applied Power Electronics Conference and Exposition - San Antonio, Texas, United States of America - 3/4/2018 5:00:00 AM-3/8/2018 5:00:00 AM
Country of Publication:
United States
Language:
English

Citation Formats

Cui, Yutian, Tolbert, Leon M., Costinett, Daniel J., Wang, Fei, and Blalock, Benjamin J. Direct 400 Vdc to 1 Vdc power conversion with input series output parallel connection for data center power supplies. United States: N. p., 2018. Web. doi:10.1109/APEC.2018.8341223.
Cui, Yutian, Tolbert, Leon M., Costinett, Daniel J., Wang, Fei, & Blalock, Benjamin J. Direct 400 Vdc to 1 Vdc power conversion with input series output parallel connection for data center power supplies. United States. doi:10.1109/APEC.2018.8341223.
Cui, Yutian, Tolbert, Leon M., Costinett, Daniel J., Wang, Fei, and Blalock, Benjamin J. Thu . "Direct 400 Vdc to 1 Vdc power conversion with input series output parallel connection for data center power supplies". United States. doi:10.1109/APEC.2018.8341223. https://www.osti.gov/servlets/purl/1474505.
@article{osti_1474505,
title = {Direct 400 Vdc to 1 Vdc power conversion with input series output parallel connection for data center power supplies},
author = {Cui, Yutian and Tolbert, Leon M. and Costinett, Daniel J. and Wang, Fei and Blalock, Benjamin J.},
abstractNote = {Data centers consume an ever-increasing amount of electricity because of the rapid growth of cloud computing and digital information storage. A high voltage point of load (HV POL) converter is proposed to convert the 400-VDC distribution voltage to 1-VDC within a single stage to increase the power conversion efficiency. A six-phase input series output parallel (ISOP) connected structure is implemented for the HV POL. The symmetrical controlled half bridge current doubler is selected as the converter topology in the ISOP structure. The full load efficiency is improved by 4% points compared with state of the art products. A voltage compensator has been designed in order to meet the strict dynamic voltage regulation requirement. A laboratory prototype has been built, and experimental results have been provided to verify the proposed HV POL with a single power conversion stage can meet the dynamic voltage regulation requirement for an on-board power supply with higher efficiency compared to the conventional architecture.},
doi = {10.1109/APEC.2018.8341223},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}

Conference:
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