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An overview of the technique of asymmetrical multilevel inverters

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Abstract:
The presentation's main field is power electronics and energy conversion. The topic is asymmetrical cascade multilevel inverters. Asymmetrical multilevel inverters are specific cascade inverters topologies where the cell input voltages are of different values and/or where the cells are different. These hybrid topologies might be interesting for several applications especially for medium and high-power. One of the main benefits is the high resolution that can be obtained with a small number of cells. Another benefit is the higher energetic efficiency that can be obtained for the \emph{inverter alone}. In the first part of the presentation, the design aspects to obtain this high energetic efficiency will be discussed. A drawback of the cascade inverters is the need to have as many isolated supplies as there are cells. In addition asymmetrical multilevel inverters present a circulation of power between the cells. Furthermore DC-DC converters are required to supply the cells of reversible converters. These drawbacks increase the cost and losses of such inverters and it limits their application field. The second part of the presentation will present a way to get round these obstacles.

Type of Seminar:
Public Seminar
Speaker:
Dr. Sebastien Mariethoz
University of Nottingham
Date/Time:
Jul 07, 2006   15:00
Location:

ETL K 25
Contact Person:

George Papafotiou
No downloadable files available.
Biographical Sketch: