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http://dx.doi.org/10.6113/JPE.2012.12.1.33

Mathematical Analysis and Experiment Validation of Modular Multilevel Converters  

Zhang, Yushu (Dept. of Electrical and Electronics Eng., The University of the Strathclyde)
Adam, Grain Philip (Dept. of Electrical and Electronics Eng., The University of the Strathclyde)
Lim, Tee-Chong (Dept. of Electrical and Electronics Eng., The University of the Strathclyde)
Finney, Stephen J. (Dept. of Electrical and Electronics Eng., The University of the Strathclyde)
Williams, Barry W. (Dept. of Electrical and Electronics Eng., The University of the Strathclyde)
Publication Information
Journal of Power Electronics / v.12, no.1, 2012 , pp. 33-39 More about this Journal
Abstract
This paper describes operating and capacitor voltage balancing of the modular multilevel converter. The paper focuses on sizing of the cell capacitor and establishes approximate expressions for the capacitor voltage. Simulations and experiments results obtained from three-level modular converter are used to demonstrate its viability in medium voltage applications. It is shown that the modular converter can operate over the full modulation index linear range independent of load power factor.
Keywords
Capacitor ripple and size; Modular Multilevel Converter; Sinusoidal Pulse width modulation;
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