Simple comparison of different PWM strategies for a three-level H-bridge flying capacitor converter

A. Ruderman, B. Reznikov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Citations (Scopus)

Abstract

The paper presents a comparison of phase-shifted and modified level-shifted carrier-based PWM strategies for a three-level H-bridge flying capacitor converter. While the optimal voltage quality of the nearest level switching may be obtained using both of them, natural voltage balancing dynamics is different. Using elementary circuit theory and switched system time domain analysis, it is possible to obtain simple analytical averaged voltage balancing dynamics solutions. Modified level-shifted carrier-based PWM is shown to provide much faster voltage balancing dynamics, especially, for small DC PWM voltage commands and AC PWM modulation indices. The explanation of this fact is obtained by analysis of zero voltage state sequences for different modulation strategies. Relatively fast voltage balancing dynamics rate provided by modified level-shifted carrier-based PWM for zero voltage command makes it possible to implement simple flying capacitors self-precharge procedure at power-up.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM
Pages544-550
Number of pages7
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event2010 12th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2010 - Brasov
Duration: May 20 2010May 22 2010

Other

Other2010 12th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2010
CityBrasov
Period5/20/105/22/10

Fingerprint

Pulse width modulation
Capacitors
Electric potential
Modulation
Time domain analysis
Circuit theory

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Ruderman, A., & Reznikov, B. (2010). Simple comparison of different PWM strategies for a three-level H-bridge flying capacitor converter. In Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM (pp. 544-550). [5510393] https://doi.org/10.1109/OPTIM.2010.5510393

Simple comparison of different PWM strategies for a three-level H-bridge flying capacitor converter. / Ruderman, A.; Reznikov, B.

Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM. 2010. p. 544-550 5510393.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ruderman, A & Reznikov, B 2010, Simple comparison of different PWM strategies for a three-level H-bridge flying capacitor converter. in Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM., 5510393, pp. 544-550, 2010 12th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2010, Brasov, 5/20/10. https://doi.org/10.1109/OPTIM.2010.5510393
Ruderman A, Reznikov B. Simple comparison of different PWM strategies for a three-level H-bridge flying capacitor converter. In Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM. 2010. p. 544-550. 5510393 https://doi.org/10.1109/OPTIM.2010.5510393
Ruderman, A. ; Reznikov, B. / Simple comparison of different PWM strategies for a three-level H-bridge flying capacitor converter. Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM. 2010. pp. 544-550
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