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Active DC voltage balancing PWM technique for high-power cascaded multilevel converters

Tarisciotti, Luca; Zanchetta, Pericle; Watson, Alan James; Bifaretti, Stefano; Clare, Jon C.; Wheeler, Patrick

Authors

Luca Tarisciotti luca.tarisciotti@nottingham.ac.uk

Pericle Zanchetta pericle.zanchetta@nottingham.ac.uk

Alan James Watson alan.watson@nottingham.ac.uk

Stefano Bifaretti

Jon C. Clare jon.clare@nottingham.ac.uk

Patrick Wheeler pat.wheeler@nottingham.ac.uk



Abstract

In this paper a dedicated PWM technique specifically designed for single-phase (or four wire three-phase) multilevel Cascaded H-Bridge Converters is presented. The aim of the proposed technique is to minimize the DC-Link voltage unbalance, independently from the amplitude of the DC-Link voltage reference, and compensate the switching device voltage drops and on-state resistances. Such compensation can be used to achieve an increase in the waveform quality of the converter. This is particularly useful in high-power, low supply voltage applications where a low switching frequency is used. The DC-Link voltage balancing capability of the method removes the requirement for additional control loops to actively balance the DC-Link voltage on each H-Bridge, simplifying the control structure. The proposed modulation technique has been validated through the use of simulation and extensive experimental testing to confirm its effectiveness.

Journal Article Type Article
Publication Date Feb 25, 2014
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 61
Issue 11
APA6 Citation Tarisciotti, L., Zanchetta, P., Watson, A. J., Bifaretti, S., Clare, J. C., & Wheeler, P. (2014). Active DC voltage balancing PWM technique for high-power cascaded multilevel converters. IEEE Transactions on Industrial Electronics, 61(11), doi:10.1109/TIE.2014.2308139
DOI https://doi.org/10.1109/TIE.2014.2308139
Keywords Multilevel converters; Predictive control; Smart grid
Publisher URL http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6748051
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information c2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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