Advanced search
1 file | 2.19 MB

Improved natural balancing with modified phase shifted PWM for single-leg five-level flying-capacitor converters

Author
Organization
Abstract
Flying capacitor converters (FCCs), as most multilevel converter topologies, require a balancing mechanism of the capacitor voltages. FCCs have the valuable property of natural voltage balancing when a special modulation technique is used. The classic methods, like Phase-Shifted Pulse Width Modulation (PS-PWM), result in very slow balancing for some duty ratio ranges. Previous work showed that for a single-leg five-level FCC one time constant is infinite for a zero desired output voltage. In this paper, a modified PS-PWM scheme for a single-leg fivelevel FCC is presented which results in faster balancing over the total duty ratio range. The modified PS-PWM scheme is studied, resulting in an averaged voltage balancing model. This model is verified using simulations and experiments. The modified PS-PWM scheme solves the slow balancing problems of the normal PS-PWM method for odd-level FCCs, while maintaining the passive control property, and it provides a self-precharge capability.
Keywords
MODULATION, Capacitor voltage balancing, MULTICELL CONVERTERS, MULTILEVEL CONVERTERS, multilevel converters, power converters, pulse width modulation (PWM)

Downloads

  • impr5LSL final print.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 2.19 MB

Citation

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

Chicago
Thielemans, Steven, Alex Ruderman, Boris Reznikov, and Jan Melkebeek. 2012. “Improved Natural Balancing with Modified Phase Shifted PWM for Single-leg Five-level Flying-capacitor Converters.” Ieee Transactions on Power Electronics 27 (4): 1658–1667.
APA
Thielemans, S., Ruderman, A., Reznikov, B., & Melkebeek, J. (2012). Improved natural balancing with modified phase shifted PWM for single-leg five-level flying-capacitor converters. IEEE TRANSACTIONS ON POWER ELECTRONICS, 27(4), 1658–1667.
Vancouver
1.
Thielemans S, Ruderman A, Reznikov B, Melkebeek J. Improved natural balancing with modified phase shifted PWM for single-leg five-level flying-capacitor converters. IEEE TRANSACTIONS ON POWER ELECTRONICS. 2012;27(4):1658–67.
MLA
Thielemans, Steven, Alex Ruderman, Boris Reznikov, et al. “Improved Natural Balancing with Modified Phase Shifted PWM for Single-leg Five-level Flying-capacitor Converters.” IEEE TRANSACTIONS ON POWER ELECTRONICS 27.4 (2012): 1658–1667. Print.
@article{1919670,
  abstract     = {Flying capacitor converters (FCCs), as most multilevel converter topologies, require a balancing mechanism of the capacitor voltages. FCCs have the valuable property of natural voltage balancing when a special modulation technique is used. The classic methods, like Phase-Shifted Pulse Width Modulation (PS-PWM), result in very slow balancing for some duty ratio ranges. Previous work showed that for a single-leg five-level FCC one time constant is infinite for a zero desired output voltage. In this paper, a modified PS-PWM scheme for a single-leg fivelevel FCC is presented which results in faster balancing over the total duty ratio range. The modified PS-PWM scheme is studied, resulting in an averaged voltage balancing model. This model is verified using simulations and experiments. The modified PS-PWM scheme solves the slow balancing problems of the normal PS-PWM method for odd-level FCCs, while maintaining the passive control property, and it provides a self-precharge capability.},
  author       = {Thielemans, Steven and Ruderman, Alex and Reznikov, Boris and Melkebeek, Jan},
  issn         = {0885-8993},
  journal      = {IEEE TRANSACTIONS ON POWER ELECTRONICS},
  keyword      = {MODULATION,Capacitor voltage balancing,MULTICELL CONVERTERS,MULTILEVEL CONVERTERS,multilevel converters,power converters,pulse width modulation (PWM)},
  language     = {eng},
  number       = {4},
  pages        = {1658--1667},
  title        = {Improved natural balancing with modified phase shifted PWM for single-leg five-level flying-capacitor converters},
  url          = {http://dx.doi.org/10.1109/TPEL.2011.2169993},
  volume       = {27},
  year         = {2012},
}

Altmetric
View in Altmetric
Web of Science
Times cited: