Performance Characteristics of a Cascaded Two-level Converter

Keith Corzine, Missouri University of Science and Technology
C. A. Whitcomb
S. D. Sudhoff

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A cascaded two-level power converter is proposed which utilizes two six-transistor inverters and is capable of producing voltages which are identical to those of three-level and four-level converters. Since the machine voltages are the same, the converter performance is the same as is verified through laboratory tests. The advantages and disadvantages of the proposed cascaded converter are explored. The proposed converter is simpler to construct and offers more nonredundant switching states per number of active semiconductors than standard multi-level converters