SiC based current source rectifier paralleling and circulating current suppression

This paper develops a liquid cooled high efficiency three-phase current source rectifier (CSR) for data center power supplies based on 400 V dc architecture, using SiC MOSFETs and Schottky diodes. The 98.54% efficiency is achieved at full load. The rectifiers are paralleled to achieve high power rat...

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Bibliographic Details
Main Authors: Fan Xu, Ben Guo, Zhuxian Xu, Tolbert, L. M., Wang, Fred, Blalock, B. J.
Format: Conference Proceeding
Language:English
Subjects:
Modulation
MOSFET
Power harmonic filters
Rectifiers
Schottky diodes
Silicon carbide
Switches
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Summary:This paper develops a liquid cooled high efficiency three-phase current source rectifier (CSR) for data center power supplies based on 400 V dc 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.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2013.6520240