Design and performance of an all-SiC three-phase buck rectifier for high efficiency data center power supplies

Author

Xu, Fan ; Guo, Ben ; Tolbert, Leon M. ; Wang, Fred ; Blalock, Benjamin J.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN, USA

fYear

2012

fDate

15-20 Sept. 2012

Firstpage

2927

Lastpage

2933

Abstract

This paper presents a 7.5 kW liquid cooled three-phase buck rectifier which will be used as the front-end rectifier in 400 V_dc architecture data center power supply systems. SiC MOSFETs and SiC Schottky barrier diodes (SBDs) are used in parallel to obtain low power semiconductor losses. Input and output filters are designed and inductor core material is compared to reduce passive component losses. A low-loss modulation scheme and 28 kHz switching frequency are selected to optimize the converter design for efficiency. A prototype of the proposed rectifier is constructed and tested, and greater than 98.5% efficiency is obtained at full load.

Keywords

Schottky diodes; power MOSFET; power semiconductor diodes; rectifying circuits; MOSFET; SBD; Schottky barrier diodes; data center power supply systems; frequency 28 kHz; front-end rectifier; high efficiency data center power supplies; inductor core material; liquid cooled three-phase buck rectifier; low-loss modulation scheme; passive component loss reduction; power 7.5 kW; power semiconductor losses; switching frequency; voltage 400 V; Inductors; MOSFETs; Rectifiers; Semiconductor diodes; Silicon; Silicon carbide; Switching frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2012 IEEE

Conference_Location

Raleigh, NC

Print_ISBN

978-1-4673-0802-1

Electronic_ISBN

978-1-4673-0801-4

Type

conf

DOI

10.1109/ECCE.2012.6342366

Filename

6342366