Feed-forward space vector modulation for single-phase multilevel cascaded converters with any DC voltage ratio

Leon, Jose I.; Vazquez, Sergio; Watson, Alan J.; Franquelo, Leopoldo G.; Wheeler, Patrick W.; Carrasco, Juan M.

Abstract

Modulation techniques for multilevel converters can create distorted output voltages and currents if the dc-link voltages are unbalanced. This situation can be avoided if the instantaneous dc voltage error is not taken into account in the modulation process. This paper proposes a feed-forward space vector modulation method for a single-phase multilevel cascade converter. Using this modulation technique, the modulated output voltage of the power converter always generates the reference determined by the controller, even in worst case voltage unbalance conditions. In addition, the possibility of optimizing the dc voltage ratio between the H-bridges of the power converter is introduced. Experimental results from a 5-kVA prototype are presented in order to validate the proposed modulation technique.

Citation

Leon, J. I., Vazquez, S., Watson, A. J., Franquelo, L. G., Wheeler, P. W., & Carrasco, J. M. (2009). Feed-forward space vector modulation for single-phase multilevel cascaded converters with any DC voltage ratio. IEEE Transactions on Industrial Electronics, 56(2), 315-325. https://doi.org/10.1109/TIE.2008.926777

• Journal Article Type: Article
• Acceptance Date: May 12, 2008
• Online Publication Date: Nov 17, 2008
• Publication Date: Jan 30, 2009
• Deposit Date: Nov 20, 2024
• Journal: IEEE Transactions on Industrial Electronics
• Print ISSN: 0278-0046
• Electronic ISSN: 1557-9948
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 56
• Issue: 2
• Pages: 315-325
• DOI: https://doi.org/10.1109/TIE.2008.926777
• Keywords: Modulation, multilevel systems, voltage control.
• Public URL: https://nottingham-repository.worktribe.com/output/3118635
• Publisher URL: https://ieeexplore.ieee.org/document/4675303