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

A. Ruderman; B. Reznikov

doi:10.1109/OPTIM.2010.5510393

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

A. Ruderman, B. Reznikov

Department of Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

15 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 language	English
Title of host publication	2010 12th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2010
Pages	544-550
Number of pages	7
DOIs	https://doi.org/10.1109/OPTIM.2010.5510393
Publication status	Published - Aug 24 2010
Event	2010 12th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2010 - Brasov, Romania Duration: May 20 2010 → May 22 2010

Publication series

Name	Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM
ISSN (Print)	1842-0133

Conference

Conference	2010 12th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2010
Country	Romania
City	Brasov
Period	5/20/10 → 5/22/10

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/OPTIM.2010.5510393

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Ruderman, A., & Reznikov, B. (2010). Simple comparison of different PWM strategies for a three-level H-bridge flying capacitor converter. In 2010 12th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2010 (pp. 544-550). [5510393] (Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM). 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.

2010 12th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2010. 2010. p. 544-550 5510393 (Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, OPTIM).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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

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