Title :
SiC based current source rectifier paralleling and circulating current suppression
Author :
Xu, Fan ; Guo, Ben ; Xu, Zhuxian ; Tolbert, Leon M. ; Wang, Fred ; Blalock, Ben J.
Author_Institution :
Center for Ultra-wide-area Resilient Electric Energy Transmission Networks (CURENT), Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, 37996-2250, USA
Abstract :
This paper develops a liquid cooled high efficiency three-phase current source rectifier (CSR) for data center power supplies based on 400 Vdc architecture, using SiC MOSFETs and Schottky diodes. The 98.54% efficiency is achieved at full load. The rectifiers are paralleled to achieve high power ratings and system redundancy. The current balance and hot-swap of paralleled CSRs are realized in simulation using master-slave control. Moreover, an improved modulation scheme through adjustment of the freewheeling state is proposed and verified to effectively suppress the circulating current.
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth Annual IEEE
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
978-1-4673-4354-1
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2013.6520240
