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Browse Journals & Magazines > Industrial Electronics, IEEE ...> Volume:57 Issue:12 Help

Single-Phase AC–DC–AC Three-Level Three-Leg Converter

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4 Author(s)
Soares de Freitas, I. ; Dept. of Electr. Eng., Fed. Univ. of Paraiba, João Pessoa, Brazil ; Jacobina, C.B. ; da Silva, E.R.C. ; Oliveira, T.M.

In this paper, a three-level three-leg ac-dc-ac converter for single-phase applications is investigated. The operating principles and control strategies for the topology are presented. It is shown that dc-link voltage balancing and its reduction are important objectives in the system design. The proposed pulsewidth modulation (PWM) strategy permits the dc-link capacitor voltage balance and also its reduction. The three-level converter is compared to the two-level converter in terms of rms switch currents, harmonic distortion, losses, and costs. Experimental and simulation results are presented to validate the theoretical studies.

Published in:
Industrial Electronics, IEEE Transactions on  (Volume:57 ,  Issue: 12 )

Date of Publication: Dec. 2010

Page(s):
4075 - 4084
ISSN :
0278-0046
INSPEC Accession Number:
11721588
Digital Object Identifier :
10.1109/TIE.2010.2043042
Date of Publication :
18 February 2010
Date of Current Version :
09 November 2010
Issue Date :
Dec. 2010
Sponsored by :
IEEE Industrial Electronics Society

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