NDLI: DC Voltage Controller for Asymmetric-Twin-Converter-Topology-Based High-Power STATCOM

Content Provider	IEEE Xplore Digital Library
Author	Anand, S. Fernandes, B.G. Chatterjee, K.
Copyright Year	1982
Abstract	A four-level static compensator integrating two 2-level converters, supplying/absorbing reactive power to/from the grid, is reported in our earlier paper. Reduced component count, simpler layout for switches, and smaller dc-link capacitor values are the attractive features of the proposed topology over the diode clamped and cascaded multilevel converters. This paper suggests further improvements in this topology. Suitable selection of the dc-link voltage values reduces distortion in the current fed to the grid. In addition, circuit topology is modified to avoid the split-capacitor dc links. This reduces the number of independent dc capacitor voltages to be controlled and eliminates the flow of third-harmonic current through the transformer. In order to improve the performance, a phase-shifted carrier-based pulsewidth modulation technique is used. A mathematical model of the system is derived, based on which a controller for the scheme is designed. The effectiveness of the scheme is verified through detailed simulation study. To confirm the viability of the scheme, experimental studies are carried out on a scaled-down laboratory prototype developed for the purpose.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	11
Ending Page	19
Page Count	9
File Size	570892
File Format	PDF
ISSN	02780046
Volume Number	60
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power conversion Topology Automatic voltage control Capacitors Equations static compensator (STATCOM) DC voltage regulation harmonic suppression multilevel operation pulsewidth modulation (PWM)
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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