Hybrid Multilevel Converters: Unified Analysis and Design Considerations
Rech, C.
Pinheiro, J.R.
Dept. of Technol., T niversidade Regional do Noroeste do Estado do Rio Grande do Sul, Ijui;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: April 2007
Volume: 54,
Issue: 2
On page(s): 1092-1104
ISSN: 0278-0046
INSPEC Accession Number: 9400458
Digital Object Identifier: 10.1109/TIE.2007.892255
Current Version Published: 2007-03-26
Abstract
The concept of hybrid multilevel converters has been generalized for different arrangements of direct-current voltage levels, modulation strategies, topologies of series-connected cells, and/or semiconductor technologies to optimize the power processing of the overall system. Therefore, a given number of levels can be synthesized by several multilevel configurations, significantly increasing flexibility and complexity in the design of hybrid multilevel converters. However, a generalized design methodology to define the main parameters of these topologies for distinct design criteria has not yet been presented. To overcome this lack, this paper presents a comparative analysis among various hybrid multilevel topologies, and it proposes some design considerations for distinct applications. Consequently, this paper constitutes a useful basis for defining an adequate hybrid arrangement for any application
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