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Space-vector-modulated three-level inverters with a single Z-source network

Effah, Francis Boafo; Wheeler, Patrick; Clare, Jon C.; Watson, Alan James

Authors

Francis Boafo Effah

Patrick Wheeler pat.wheeler@nottingham.ac.uk

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

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



Abstract

The Z-source inverter is a relatively recent converter topology that exhibits both voltage-buck and voltage-boost capability. The Z-source concept can be applied to all dc-to-ac, ac-to-dc, ac-to-ac, and dc-to-dc power conversion whether two-level or multilevel. However, multilevel converters offer many benefits for higher power applications. Previous publications have shown the control of a Z-source neutral point clamped inverter using the carrier based modulation technique. This paper presents the control of a Z-source neutral point clamped inverter using the space vector modulation technique. This gives a number of benefits, both in terms of implementation and harmonic performance. The adopted approach enables the operation of the Z-source arrangement to be optimised and implemented digitally without introducing any extra commutations. The proposed techniques are demonstrated both in simulation and through experimental results from a prototype converter.

Journal Article Type Article
Journal IEEE Transactions on Power Electronics
Print ISSN 0885-8993
Electronic ISSN 0885-8993
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 28
Issue 6
Institution Citation Effah, F. B., Wheeler, P., Clare, J. C., & Watson, A. J. (in press). Space-vector-modulated three-level inverters with a single Z-source network. IEEE Transactions on Power Electronics, 28(6), doi:10.1109/TPEL.2012.2219627
DOI https://doi.org/10.1109/TPEL.2012.2219627
Keywords Z-source inverter, Neutral Point Clamped inverter, Space Vector Modulation, buck-boost
Publisher URL http://ieeexplore.ieee.org/document/6307882/?tp=&arnumber=6307882&contentType=Journals%20%26%20Magazines&searchField%3DSearch_All%26queryText%3Dspace-vector-modulated%20three-level
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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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