DocumentCode :
1339036
Title :
Symmetrical Hybrid Multilevel DC–AC Converters With Reduced Number of Insulated DC Supplies
Author :
Ruiz-Caballero, Domingo A. ; Ramos-Astudillo, Reynaldo M. ; Mussa, Samir Ahmad ; Heldwein, Marcelo Lobo
Author_Institution :
Dept. of Electr. Eng., Pontificia Univ. Catolica de Valparaiso, Valparaiso, Chile
Volume :
57
Issue :
7
fYear :
2010
fDate :
7/1/2010 12:00:00 AM
Firstpage :
2307
Lastpage :
2314
Abstract :
Novel symmetric hybrid multilevel topologies are introduced for both single- and three-phase medium-voltage high-power systems. The topology conception is presented in detail, where a three-level switching cell with low component count, and its modulation pattern give the origin of the proposed converters. Voltage sharing and low output-voltage distortion are achieved. The theoretical frequency spectra are derived. Switching devices are separated into high- and low-frequency devices, generating hybrid converters. Five-level three-phase topologies are generated from only three insulated dc sources, while the number of semiconductors is the same as for the cascaded H bridge. Both simulation and experimental results are provided showing the validity of the analysis.
Keywords :
DC-AC power convertors; distortion; insulated DC supplies; modulation pattern; output-voltage distortion; symmetric hybrid multilevel topologies; symmetrical hybrid multilevel DC-AC converters; three-level switching cell; three-phase medium-voltage high- power systems; voltage sharing; DC–AC converters; hybrid inverters; modulation; symmetrical multilevel converters;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2009.2036636
Filename :
5339229
Link To Document :
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