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Flying-capacitor multilevel converter voltage balance dynamics for pure resistive load

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Abstract
Multilevel converters need voltage balancing to be able to generate an output voltage with high quality. Flying capacitor converter topology has a natural voltage balancing property. Voltage balance dynamics analytical research methods reported to date are essentially based on a frequency domain analysis using double fourier transform. These complicated methods are not truly analytical, which makes an understanding of parameter influence on time constants difficult. In this paper, a straightforward time domain approach based on stitching of switch intervals piece-wise analytical solutions to a DC modulated H-bridge flying capacitor converter is discussed. This method allows to obtain time-averaged discrete and continuous voltage balance dynamics models. Using small-parameter approximation for pure resistive loads, simple and accurate expressions for voltage balance time constants are deduced, revealing their dependence on load parameters, carrier frequency and duty ratio.
Keywords
power electronics

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Citation

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Chicago
Thielemans, Steven, Alex Ruderman, and Jan Melkebeek. 2009. “Flying-capacitor Multilevel Converter Voltage Balance Dynamics for Pure Resistive Load.” In 2009 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED ELECTROMECHANICAL MOTION SYSTEMS (ELECTROMOTION 2009), 483–488. New York, NY, USA: IEEE.
APA
Thielemans, S., Ruderman, A., & Melkebeek, J. (2009). Flying-capacitor multilevel converter voltage balance dynamics for pure resistive load. 2009 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED ELECTROMECHANICAL MOTION SYSTEMS (ELECTROMOTION 2009) (pp. 483–488). Presented at the 8th International Symposium on Advanced Electromechanical Motion Systems (ELECTROMOTION 2009) ; EPE Chapter Electric Drives Joint Symposium, New York, NY, USA: IEEE.
Vancouver
1.
Thielemans S, Ruderman A, Melkebeek J. Flying-capacitor multilevel converter voltage balance dynamics for pure resistive load. 2009 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED ELECTROMECHANICAL MOTION SYSTEMS (ELECTROMOTION 2009). New York, NY, USA: IEEE; 2009. p. 483–8.
MLA
Thielemans, Steven, Alex Ruderman, and Jan Melkebeek. “Flying-capacitor Multilevel Converter Voltage Balance Dynamics for Pure Resistive Load.” 2009 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED ELECTROMECHANICAL MOTION SYSTEMS (ELECTROMOTION 2009). New York, NY, USA: IEEE, 2009. 483–488. Print.
@inproceedings{759076,
  abstract     = {Multilevel converters need voltage balancing to be able to generate an output voltage with high quality. Flying capacitor converter topology has a natural voltage balancing property. Voltage balance dynamics analytical research methods reported to date are essentially based on a frequency domain analysis using double fourier transform. These complicated methods are not truly analytical, which makes an understanding of parameter influence on time constants difficult. In this paper, a straightforward time domain approach based on stitching of switch intervals piece-wise analytical solutions to a DC modulated H-bridge flying capacitor converter is discussed. This method allows to obtain time-averaged discrete and continuous voltage balance dynamics models. Using small-parameter approximation for pure resistive loads, simple and accurate expressions for voltage balance time constants are deduced, revealing their dependence on load parameters, carrier frequency and duty ratio.},
  author       = {Thielemans, Steven and Ruderman, Alex and Melkebeek, Jan},
  booktitle    = {2009 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED ELECTROMECHANICAL MOTION SYSTEMS (ELECTROMOTION 2009)},
  isbn         = {9781424451500},
  keyword      = {power electronics},
  language     = {eng},
  location     = {Lille, France},
  pages        = {483--488},
  publisher    = {IEEE},
  title        = {Flying-capacitor multilevel converter voltage balance dynamics for pure resistive load},
  url          = {http://dx.doi.org/10.1109/ELECTROMOTION.2009.5259080},
  year         = {2009},
}

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