Multidimensional Modulation Technique for Cascaded Multilevel Converters

Multilevel cascaded H-bridge converters have found industrial application in the medium-voltage high-power range. In this paper, a generalized modulation technique for this type of converter based on a multidimensional control region is presented. Using the multidimensional control region, it is sho...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2011-02, Vol.58 (2), p.412-420
Main Authors: Leon, J I, Kouro, S, Vazquez, S, Portillo, R, Franquelo, L G, Carrasco, J M, Rodriguez, J
Format: Article
Language:English
Subjects:
Capacitors
Cascaded multilevel converters
Converters
Electric potential
Flexibility
Harmonic distortion
Medium voltage
Modulation
modulation algorithm
Multilevel
Permission
Phase modulation
Power demand
Pulp manufacturing
Pulse width modulation
Support vector machines
Switching
Topology
Voltage
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Summary:Multilevel cascaded H-bridge converters have found industrial application in the medium-voltage high-power range. In this paper, a generalized modulation technique for this type of converter based on a multidimensional control region is presented. Using the multidimensional control region, it is shown that all previous modulation techniques are particularized versions of the proposed method. Several possible solutions to develop a specific implementation of the modulation method are addressed in order to show the potential possibilities and the flexibility of the proposed technique. In addition, a feedforward version of this technique is also introduced to determine the switching sequence and the switching times, avoiding low harmonic distortion with unbalanced dc voltages. Experimental results are shown in order to validate the proposed concepts.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2010.2048833