Coupled Inductor-Based Parallel Operation of a qZ-Source Full-Bridge DC-DC Converter

This study presents a novel transformer isolated parallel connected quasi Z-source (qZ-source) full-bridge DC-DC converter that uses a coupled inductor in both the qZ-source network and output filter inductor. Unlike traditional voltage-fed or current-fed converters, the proposed converter can be open- and short-circuited without damaging switching devices. Therefore, the desired buck and boost functions can be achieved and converter reliability can be significantly improved. All the bulky inductors in the qZ-source network and output filter can also be minimized with the proposed inductor structures. A 4 kW prototype DC-DC converter is built and tested to verify the performance of the proposed converter.

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Cite this article

[IEEE Style]

H. Lee, H. Kim, H. Cha, T. Chun, E. Nho, "Coupled Inductor-Based Parallel Operation of a qZ-Source Full-Bridge DC-DC Converter," Journal of Power Electronics, vol. 15, no. 1, pp. 1-9, 2015. DOI: 10.6113/JPE.2015.15.1.1.

[ACM Style]

Hyeongmin Lee, Heung-Geun Kim, Honnyong Cha, Tae-Won Chun, and Eui-Cheol Nho. 2015. Coupled Inductor-Based Parallel Operation of a qZ-Source Full-Bridge DC-DC Converter. Journal of Power Electronics, 15, 1, (2015), 1-9. DOI: 10.6113/JPE.2015.15.1.1.