Unidimensional Modulation Technique for Cascaded Multilevel Converters

被引:57
作者
Leon, Jose I. [1 ]
Vazquez, Sergio [1 ]
Kouro, Samir [2 ]
Franquelo, Leopoldo G. [1 ]
Carrasco, Juan M. [1 ]
Rodriguez, Jose [3 ]
机构
[1] Univ Seville, Dept Elect Engn, E-41012 Seville, Spain
[2] Ryerson Univ, Dept Elect & Comp Engn, Toronto, ON M5B 2K3, Canada
[3] Univ Tecn Federico Santa Maria, Dept Elect Engn, Valparaiso 356028, Chile
关键词
Modulation; multilevel systems; voltage control; STRATEGY;
D O I
10.1109/TIE.2009.2016510
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper presents a simple and low-computational-cost modulation technique for multilevel cascaded H-bridge converters. The technique is based on geometrical considerations considering a unidimensional control region to determine the switching sequence and the corresponding switching times. In addition, a simple strategy to control the dc-voltage ratio between the H-bridges of the multilevel cascaded converter is presented. Examples for the two-cell topology are shown, but the proposed technique can be applied to develop modulation methods for a higher number of H-bridges. Experimental results are presented to validate the proposed technique.
引用
收藏
页码:2981 / 2986
页数:6
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