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Open AccessArticle

An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation

1
Department of Electrical Engineering, Federal Institute of Espírito Santo, Av. Vitória 1729, Jucutuquara, Campus Vitória, 29040-780 Vitória/ES, Brazil
2
Department of Electrical Engineering , Federal University of Espírito Santo, Av. Fernando Ferrari, Campus Universitário, 29060-900 Vitória/ES, Brazil
3
Department of Electrical Engineering, Federal University of Rio de Janeiro, Av. Athos da Silveira Ramos 149-Cidade Universitária, 21941-914, Rio de Janeiro/RJ, Brazil
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Bimal K. Bose
Electronics 2015, 4(2), 311-328; https://doi.org/10.3390/electronics4020311
Received: 30 December 2014 / Revised: 15 May 2015 / Accepted: 27 May 2015 / Published: 3 June 2015
(This article belongs to the Special Issue Multi-Level Converters)
Problems related to power quality, which in the last years were responsible only for small losses in low-voltage distribution systems, are now causing damage to power apparatuses and financial losses also in medium-voltage systems. The necessity of a better quality of power supply encourages the development of new specific custom power devices directly connected in medium-voltage distribution systems. It is well know that the multilevel converters are capable of being installed directly in the medium voltage, and presents several advantages when compared with conventional two-level converters. Some topologies, like the asymmetric cascaded multilevel converter, presents difficulties in regulating the voltages of all isolated dc-link capacitors. In this context, this article presents an asymmetric nineteen-level D–STATCOM (Distribution Static Synchronous Compensator) with a reactive power and dc-link regulation control loops for generic cascaded multilevel converters in order to improve the power quality in medium-voltage distribution systems. The performance of the proposed control method for a multilevel D–STATCOM is presented and evaluated in a downscaled prototype. View Full-Text
Keywords: multilevel asymmetric cascaded; D-STATCOM; hybrid modulation multilevel asymmetric cascaded; D-STATCOM; hybrid modulation
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MDPI and ACS Style

Nunes, W.T.; Encarnação, L.F.; Aredes, M. An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation. Electronics 2015, 4, 311-328. https://doi.org/10.3390/electronics4020311

AMA Style

Nunes WT, Encarnação LF, Aredes M. An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation. Electronics. 2015; 4(2):311-328. https://doi.org/10.3390/electronics4020311

Chicago/Turabian Style

Nunes, Weder T.; Encarnação, Lucas F.; Aredes, Mauricio. 2015. "An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation" Electronics 4, no. 2: 311-328. https://doi.org/10.3390/electronics4020311

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