Five-level Z-source diode-clamped inverter

Gao, F., Loh, P.C., Blaabjerg, F., Teodorescu, R., & Vilathgamuwa, D.M. (2010) Five-level Z-source diode-clamped inverter. IET Power Electronics, 3(4), pp. 500-510.

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This study proposes a five-level Z-source diode-clamped inverter designed with two intermediate Z-source networks connected between the dc input sources and rear-end inverter circuitry. By partially shorting the Z-source networks, new operating states not previously reported for two-level Z-source inverter are introduced here for operating the proposed inverter with voltage buck-boost energy conversion ability and five-level phase voltage switching. These characteristic features are in fact always ensured at the inverter terminal output by simply adopting a properly designed carrier modulation scheme, which always inserts two partial shoot-through states per half carrier cycle for smooth balanced operation. Theoretical findings and practical issues identified are eventually verified by constructing a scaled down laboratory prototype for testing.

Impact and interest:

32 citations in Scopus
21 citations in Web of Science®
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ID Code: 72518
Item Type: Journal Article
Refereed: Yes
Keywords: DC input sources, Five-level phase voltage switching, Five-level z-source diode-clamped inverter, Rear-end inverter circuitry, Voltage buck-boost energy conversion
DOI: 10.1049/iet-pel.2009.0015
ISSN: 1755-4535
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: © 2010 The Institution of Engineering and Technology
Deposited On: 03 Jun 2014 05:40
Last Modified: 03 Jun 2014 22:54

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