NDLI: Current commutation in a medium voltage hybrid DC circuit breaker using 15 kV vacuum switch and SiC devices

Content Provider	IEEE Xplore Digital Library
Author	Chang Peng Huang, A.Q. Xiaoqing Song
Copyright Year	2015
Description	Author affiliation: FREEDM Syst. Center, North Carolina State Univ., Raleigh, NC, USA (Chang Peng; Huang, A.Q.; Xiaoqing Song)
Abstract	Analysis and experimental study of current commutation in an ultra-fast, current limiting, hybrid DC circuit breaker for medium voltage applications is reported in this paper. The hybrid DCCB consists a fast acting 15 kV mechanical switch, a low voltage commutating switch, a single 15 kV Silicon Carbide Emitter Turn Off Thyristor (ETO) device, and a stack of MOVs. The proof-of-concept prototype is able to conduct 45 A normal current and interrupt a maximum of more than 100 A fault current at medium voltage level in less than 4 milliseconds, which is one order of magnitude faster compared to conventional mechanical circuit breakers that typically take 40-100 ms. This paper has presented the operation principle of a hybrid DC circuit breaker and analyzed the current commutation process. Based on the analysis, guidelines are given in the paper to select and design the commutating switch.
Starting Page	2244
Ending Page	2250
File Size	1617568
Page Count	7
File Format	PDF
ISBN	9781479967353
DOI	10.1109/APEC.2015.7104661
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-03-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switches Insulated gate bipolar transistors Inductance MOSFET circuits MOSFET vacuum switch medium voltage DC circuit breaker hybrid circuit breaker SiC device Emitter turn off thyristor
Content Type	Text
Resource Type	Article

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