Quasi-Z-Source Inverter Based Bi-Directional DC/DC Converter: Analysis of Experimental Results

7th International Conference-Workshop "Compatibility and Power Electronics" (CPE 2011): Conference Proceedings 2011
Jānis Zaķis, Dmitri Vinnikov, Indrek Roasto, Leonīds Ribickis

This paper presents simulation and experimental results of a quasi-Z-source inverter (qZSI) based bi-directional DC/DC converter for supercapacitor (SC) interfacing. The bidirectional capability provides both the charging and discharging of the SC. During the charging mode the converter operates as a conventional VSI performing the voltage buck function, but during the discharging mode the converter operates as a qZSI based step-up DC/DC converter performing the voltage boost function. The proposed converter discussed was tested in both operating modes - SC charging and discharging. Theoretical assumptions are proved by the PSIM simulation results and verified experimentally on a 500 W laboratory prototype. The most important results obtained are outlined.

Keywords
DC/DC converter, qZSI, energy storage, supercapacitor
DOI
10.1109/CPE.2011.5942267
Hyperlink
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5942267

Zaķis, J., Vinnikov, D., Roasto, I., Ribickis, L. Quasi-Z-Source Inverter Based Bi-Directional DC/DC Converter: Analysis of Experimental Results. In: 7th International Conference-Workshop "Compatibility and Power Electronics" (CPE 2011): Conference Proceedings, Estonia, Tallinn, 1-3 June, 2011. Piscataway: IEEE, 2011, pp.394-399. ISBN 978-1-4244-8806-3. e-ISBN 978-1-4244-8805-6. Available from: doi:10.1109/CPE.2011.5942267

Publication language
English (en)