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Balancing and harmonic analysis of flying capacitor multilevel converters

Steven Thielemans (UGent) , Thomas Vyncke (UGent) and Jan Melkebeek (UGent)
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Abstract
To supply medium-voltage AC machines, DC-AC converters working with a high bus voltage are required. By using multilevel converters, these high voltages can be supplied without the need for switches with a high voltage rating. Moreover, the output voltage waveform can be improved considerably. The flying capacitor multilevel converter is a recently devel- oped converter topology assuring a flexible control and modular design. However, the flying capacitor multilevel converter requires a balanced DC voltage distribution. This can be realized by using a special control leading to natural balancing or by measuring the voltages and selecting the appropriate switching state. The balancing is influenced by three factors, namely the harmonic content of the reference waveform, the switching frequency and the load impedance. In addition to the voltage balancing of the flying capacitor multilevel converter, the output voltage must ensure the control of the load, e.g. a three phase AC machine.
Keywords
Power electronics, Multilevel systems, AC motor drives, MULTICELL CONVERTERS, NATURAL BALANCE

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Citation

Please use this url to cite or link to this publication:

MLA
Thielemans, Steven, Thomas Vyncke, and Jan Melkebeek. “Balancing and Harmonic Analysis of Flying Capacitor Multilevel Converters.” IEEE Convention of Electrical and Electronics Engineers in Israel. New York, NY, USA: IEEE, 2008. 599–603. Print.
APA
Thielemans, S., Vyncke, T., & Melkebeek, J. (2008). Balancing and harmonic analysis of flying capacitor multilevel converters. IEEE Convention of Electrical and Electronics Engineers in Israel (pp. 599–603). Presented at the IEEE 25th Convention of Electrical and Electronics Engineers in Israel, New York, NY, USA: IEEE.
Chicago author-date
Thielemans, Steven, Thomas Vyncke, and Jan Melkebeek. 2008. “Balancing and Harmonic Analysis of Flying Capacitor Multilevel Converters.” In IEEE Convention of Electrical and Electronics Engineers in Israel, 599–603. New York, NY, USA: IEEE.
Chicago author-date (all authors)
Thielemans, Steven, Thomas Vyncke, and Jan Melkebeek. 2008. “Balancing and Harmonic Analysis of Flying Capacitor Multilevel Converters.” In IEEE Convention of Electrical and Electronics Engineers in Israel, 599–603. New York, NY, USA: IEEE.
Vancouver
1.
Thielemans S, Vyncke T, Melkebeek J. Balancing and harmonic analysis of flying capacitor multilevel converters. IEEE Convention of Electrical and Electronics Engineers in Israel. New York, NY, USA: IEEE; 2008. p. 599–603.
IEEE
[1]
S. Thielemans, T. Vyncke, and J. Melkebeek, “Balancing and harmonic analysis of flying capacitor multilevel converters,” in IEEE Convention of Electrical and Electronics Engineers in Israel, Eilat, Israel, 2008, pp. 599–603.
@inproceedings{692903,
  abstract     = {To supply medium-voltage AC machines, DC-AC converters working with a high bus voltage are required. By using multilevel converters, these high voltages can be supplied without the need for switches with a high voltage rating. Moreover, the output voltage waveform can be improved considerably. The flying capacitor multilevel converter is a recently devel-
oped converter topology assuring a flexible control and modular design. However, the flying capacitor multilevel converter requires a balanced DC voltage distribution. This can be realized by using a special control leading to natural balancing or by measuring the voltages and selecting the appropriate switching state. The balancing is influenced by three
factors, namely the harmonic content of the reference waveform, the switching frequency and the load impedance. In addition to the voltage balancing of the flying capacitor multilevel converter, the output voltage must ensure the control of the load, e.g. a three phase AC machine.},
  author       = {Thielemans, Steven and Vyncke, Thomas and Melkebeek, Jan},
  booktitle    = {IEEE Convention of Electrical and Electronics Engineers in Israel},
  isbn         = {978-1-4244-2481-8},
  issn         = {0899-6156},
  keywords     = {Power electronics,Multilevel systems,AC motor drives,MULTICELL CONVERTERS,NATURAL BALANCE},
  language     = {eng},
  location     = {Eilat, Israel},
  pages        = {599--603},
  publisher    = {IEEE},
  title        = {Balancing and harmonic analysis of flying capacitor multilevel converters},
  year         = {2008},
}

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