NDLI: High-power modular multilevel converters with SiC JFETs

Content Provider	IEEE Xplore Digital Library
Author	Peftitsis, D. Tolstoy, G. Antonopoulos, A. Rabkowski, J. Jang-Kwon Lim Bakowski, M. Angquist, L. Nee, H.-P.
Copyright Year	2010
Description	Author affiliation: Electrical Machines and Power Electronics Lab (EME), School of Electrical Engineering, Royal Institute of Technology (KTH), Teknikringen 33, Se-10044 Stockholm, Switzerland (Peftitsis, D.; Tolstoy, G.; Antonopoulos, A.; Rabkowski, J.; Jang-Kwon Lim; Bakowski, M.; Angquist, L.; Nee, H.-P.)
Abstract	This paper studies the possibility of building a Modular Multilevel Converter (M2C) using Silicon Carbide (SiC) switches. The main focus is on a theoretical investigation of the conduction losses of such a converter and a comparison to a corresponding converter with silicon insulated gate bipolar transistors. Both SiC BJTs and JFETs are considered and compared in order to choose the most suitable technology. One of the sub-modules of a down-scaled 10 kVA prototype M2C is replaced with a sub-module with SiC JFETs without anti-parallel diodes. It is shown that diode-less operation is possible with the JFETs conducting in the negative direction, leaving the possibility to use the body diode during the switching transients. Experimental waveforms for the SiC sub-module verify the feasibility during normal steady-state operation. The loss estimation shows that a 300 MW M2C for high-voltage direct current transmission would potentially have an efficiency of approximately 99,8 % if equipped with future 3.3 kV 1.2 kA SiC JFETs.
Starting Page	2148
Ending Page	2155
File Size	832508
Page Count	8
File Format	PDF
ISBN	9781424452866
DOI	10.1109/ECCE.2010.5618274
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	High Voltage Direct-Current Transmission Modular Multilevel Converter Silicon carbide Capacitors Prototypes Converters Silicon Silicon Carbide JFETs Diode-less operation MOSFETs SiC JFETs
Content Type	Text
Resource Type	Article

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