Partial-Resonant Buck–Boost and Flyback DC–DC Converters

Neyyikuppam.Chiranjeevi, G Krishna Deeks .

Abstract


This paper introduces innovative nonisolated and iso-lated soft-switched dc–dc topologies with the step-up/down ability. The nonisolated topology is constructed by adding a small ac ca-pacitor in parallel with the main inductor of the conventional buck– boost converter and replacing its semiconductor devices with the reverse-blocking switches. By using a novel control scheme, true zero-voltage switching is realized at both turn-on and turn-off of the power switches irrespective of the input voltage, output voltage, or load value. The isolated form of the converter is created by substi-tuting the main inductor with an air-gapped high-frequency trans-former, similar to the flyback converter. In this case, two smaller ac capacitors are placed on both sides of the transformer to realize soft switching as well as passive clamping; no extra clamping circuit is required. The basic operation of the proposed partial-resonant converters includes four modes and is described in detail. The com-prehensive analysis of the topologies is carried out as well. Various experimental results in different operating conditions are provided to verify the performance of the proposed power converters.

Full Text:

PDF

References


M. K. Kazimierczuk and D. Czarkowski, Resonant Power Converters, 2nd ed. Hoboken, NJ, USA: Wiley, 2011.

R. Erickson and D. Maksimovic, Fundamentals of Power Electronics, 2nd ed. New York, NY, USA: Kluwer, 2004.

I. Aksoy, H. Bodur, and A. F. Bakan, “A new ZVT-ZCT-PWM DC–DC converter,” IEEE Trans. Power Electron., vol. 25, no. 8, pp. 2093–2105, Aug. 2010.

K. H. Liu and F. C. Lee, “Zero-voltage switching technique in DC/DC converters,” IEEE Trans. Power Electron., vol. 5, no. 3, pp. 293–304, Jul. 1990.




DOI: https://doi.org/10.23956/ijarcsse.v8i6.735

Refbacks

  • There are currently no refbacks.




© International Journals of Advanced Research in Computer Science and Software Engineering (IJARCSSE)| All Rights Reserved | Powered by Advance Academic Publisher.