Multilevel converters have gained popularity in high-power applications due to their low switch voltage stress and modularity. Cascaded H-bridge converters are a promising breed of multilevel converters, which generally require several independent dc sources. Using phase-shift modulation, a new control method for cascaded H-bridge multilevel converters with only one independent dc source per phase is presented in this paper. Unlike the conventional approaches, the proposed method has a wide voltage regulation range over the capacitors replacing the dc sources in the H-bridge converter cells.
J. Liao et al., "A New Control Method for Single-DC-Source Cascaded H-bridge Multilevel Converters using Phase-Shift Modulation," Proceedings of the 23rd Annual IEEE Applied Power Electronics Conference and Exposition, 2008. APEC 2008, Institute of Electrical and Electronics Engineers (IEEE), Feb 2008.
The definitive version is available at http://dx.doi.org/10.1109/APEC.2008.4522825
23rd Annual IEEE Applied Power Electronics Conference and Exposition, 2008. APEC 2008
Electrical and Computer Engineering
Keywords and Phrases
H-Bridge Cell; Cascaded Converters; Multilevel Converter; Power Capacitors; Switching Convertors; Bridge circuits
Article - Conference proceedings
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