NDLI: Scaling the controllable network transformer (CNT) to utility-level voltages with direct AC/AC power electronic building blocks (PEBBs)

Content Provider	IEEE Xplore Digital Library
Author	Iyer, A.R. Kandula, P.R. Moghe, R. Lambert, F.C. Divan, D.M.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA (Iyer, A.R.; Kandula, P.R.; Moghe, R.; Lambert, F.C.; Divan, D.M.)
Abstract	Increases in load, increases in penetration of renewable energy, and limited investment in transmission infrastructure are fostering the need for a smarter, more dynamically controllable grid. Flexible ac transmission systems (FACTs) devices such as the UPFC and BTB are difficult to implement at transmission-level voltages due to complexity and cost. A direct-ac/ac-converter-based controllable network transformer (CNT), because of its fractional converter rating and lack of dc storage requirement, is a simpler and less expensive alternative for applications involving dynamic power flow control. Scaling of the CNT, however, is still a challenge. This paper proposes an approach for scaling the CNT to utility-level voltages and currents utilizing multilevel topologies as well as direct-ac/ac power electronic building blocks (AC-PEBBs). A comparison of various PEBB-based CNT topologies is presented via simulation and experimental results for a 13 kV, 1 MVA application.
Starting Page	3049
Ending Page	3056
File Size	1908425
Page Count	8
File Format	PDF
ISBN	9781479903368
DOI	10.1109/ECCE.2013.6647099
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Insulated gate bipolar transistors Optical switches Snubbers Topology Mathematical model Voltage control
Content Type	Text
Resource Type	Article

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