Title :
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
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 Vdc 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;
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
DOI :
10.1109/ECCE.2012.6342366
