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Publikācija: Experimental Study of High Step-Up Quasi-Z-Source DC-DC Converter with Synchronous Rectification

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Nosaukums oriģinālvalodā Experimental Study of High Step-Up Quasi-Z-Source DC-DC Converter with Synchronous Rectification
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.2. Elektrotehnika, elektronika, informācijas un komunikāciju tehnoloģijas
Autori Liisa Liivik
Andrii Chub
Dmitri Vinnikov
Jānis Zaķis
Atslēgas vārdi DC-DC converter, synchronous rectification, quasi-Z-source, power losses, photovoltaic energy converter
Anotācija Quasi-Z-source DC-DC converters have attracted research interest due to their numerous advantages in emerging applications. However, they suffer from relatively low efficiency. This paper presents semiconductor loss breakdown of the quasi-Z-source DC-DC converter to show that conduction losses in semiconductors contribute most to overall losses. Synchronous rectification realized through replacement of diodes with N-channel MOSFETs was proposed to improve the converter efficiency in prior works. Our detailed experimental study of efficiency improvement with synchronous rectification was based on a 250 W prototype. Results were first obtained for replacement of diodes in the primary side only, then in the secondary side only. Finally, a converter that contains only controlled switches was evaluated. Efficiency curves measured were compared with those for the baseline diode-based topology. The experimental study was performed using operating points typical of photovoltaic module integrated converters.
DOI: 10.1109/CPE.2015.7231110
Atsauce Liivik, L., Chub, A., Vinnikov, D., Zaķis, J. Experimental Study of High Step-Up Quasi-Z-Source DC-DC Converter with Synchronous Rectification. No: 2015 9th International Conference-Workshop on Compatibility and Power Electronics (CPE): Proceedings, Portugāle, Costa da Caparica, 24.-26. jūnijs, 2015. Piscataway, NJ: IEEE, 2015, 409.-414.lpp. ISBN 978-1-4799-6301-0. ISSN 2166-9546. Pieejams: doi:10.1109/CPE.2015.7231110
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