NDLI: A Grid-Level High-Power BTB (Back-To-Back) System Using Modular Multilevel Cascade Converters WithoutCommon DC-Link Capacitor

Content Provider	IEEE Xplore Digital Library
Author	Sekiguchi, K. Khamphakdi, P. Hagiwara, M. Akagi, H.
Copyright Year	1972
Abstract	This paper provides an intensive discussion on analysis, simulation, and experiment of a back-to-back (BTB) system unifying two modular multilevel cascade converters based on double-star chopper cells (MMCCs-DSCCs). Each of the two DSCCs connected back-to-back consists of multiple cascaded chopper cells and a center-tapped inductor per leg. Low voltage steps bring significant reductions in harmonic voltage and current to the BTB system. Neither dc-link capacitor nor voltage sensor is required for regulating the dc-link voltage and controlling the dc-link current. A three-phase 200-V, 10-kW, 50-Hz downscaled BTB system with phase-shifted PWM is designed, constructed, and tested to verify its operating principles and performance. Analytical, simulated, and experimental results agree well with each other in steady and transient states. Experimental waveforms confirm the effectiveness of a self-starting/restarting procedure.
Sponsorship	IEEE Industry Applications Society
Starting Page	2648
Ending Page	2659
Page Count	12
File Size	2415321
File Format	PDF
ISSN	00939994
Volume Number	50
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Choppers (circuits) Capacitors Voltage control Inductors Pulse width modulation HVDC transmission Inductance modular multilevel cascade converters Asynchronous intertie back-to-back systems gridconnected power converters modular multilevel cascade converters (MMCCs) back-to-back (BTB) systems grid-connected power converters
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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