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Electrical, Control and Communication Engineering

The Journal of Riga Technical University

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Comparative Analysis of Semiconductor Power Losses of Galvanically Isolated Quasi-Z-Source and Full-Bridge Boost DC-DC Converters

Roman Kosenko / Liisa Liivik / Andrii Chub / Oleksandr Velihorskyi
Published Online: 2015-07-24 | DOI: https://doi.org/10.1515/ecce-2015-0001


This paper compares semiconductor losses of the galvanically isolated quasi-Z-source converter and full-bridge boost DC-DC converter with active clamping circuit. Operation principle of both converters is described. Short design guidelines are provided as well. Results of steady state analysis are used to calculate semiconductor power losses for both converters. Analytical expressions are derived for all types of semiconductor power losses present in these converters. The theoretical results were verified by means of numerical simulation performed in the PSIM simulation software. Its add-on module “Thermal module” was used to estimate semiconductor power losses using the datasheet parameters of the selected semiconductor devices. Results of calculations and simulation study were obtained for four operating points with different input voltage and constant input current to compare performance of the converters in renewable applications, like photovoltaic, where input voltage and power can vary significantly. Power loss breakdown is detailed and its dependence on the converter output power is analyzed. Recommendations are given for the use of the converter topologies in applications with low input voltage and relatively high input current.

Keywords: DC-DC power converters; Energy efficiency; Pulse width modulation converters; Semiconductor device modeling


  • [1] C. Qiao and K. M. Smedley, “An isolated full bridge boost converter with active soft switching,” in IEEE 32nd Annu. Power Electron. Specialists Conf., PESC. 2001, vol. 2, 2001, pp. 896–903.Google Scholar

  • [2] R. Watson and F. C. Lee, “A soft-switched, full-bridge boost converter employing an active-clamp circuit,” in 27th Annual IEEE Power Electronics Specialists Conf., PESC ‘96, vol. 2, 23–27 June 1996, pp. 1948–1954.Google Scholar

  • [3] A. Mousavi, P. Das and G. Moschopoulos, “A Comparative Study of a New ZCS DC–DC Full-Bridge Boost Converter With a ZVS Active-Clamp Converter,” IEEE Trans. Power Electron., vol. 27, no. 3, pp. 1347–1358, March 2012. http://dx.doi.org/10.1109/TPEL.2011.2118233Crossref

  • [4] A. Blinov, D. Vinnikov and V. Ivakhno, “Full soft-switching high step-up dc-dc converter for photovoltaic applications,” in 16th European Conf. Power Electron. and Appl., EPE’14-ECCE Europe, Aug. 2014, pp. 1–7.Google Scholar

  • [5] E. S. Park, S. J. Choi, J. M. Lee and B. H. Cho, “A soft-switching active-clamp scheme for isolated full-bridge boost converter,” in 19th Annu. IEEE Appl. Power Electron. Conf. and Exposition, APEC ‘04, vol. 2, 2004, pp. 1067–1070.Google Scholar

  • [6] D. Vinnikov et al., “Performance improvement method for the voltage-fed qZSI with continuous input current,” in 15th IEEE Mediterranean Electrotechnical Conf., MELECON 2010, 26–28 April 2010, pp. 1459–1464.Google Scholar

  • [7] L. Liivik, D. Vinnikov and J. Zakis, “Simulation study of high step-up quasi-Z-source DC-DC converter with synchronous rectification,” in 55th Int. Scientific Conf. Power and Electrical Engineering of Riga Technical University, RTUCON 2014, 14 Oct. 2014, pp. 34–37.Google Scholar

  • [8] D. Vinnikov and I. Roasto, “Quasi-Z-Source-Based Isolated DC/DC Converters for Distributed Power Generation,” IEEE Trans. Ind. Electron., vol. 58, no. 1, Jan. 2011, pp. 192–201. http://dx.doi.org/10.1109/TIE.2009.2039460Web of ScienceCrossref

  • [9] Y. Li et al., “Quasi-Z-Source Inverter for Photovoltaic Power Generation Systems,” in 24th Annu. IEEE Applied Power Electron. Conf. and Exposition, APEC 2009, 15–19 Feb. 2009, pp. 918–924. http://dx.doi.org/10.1109/APEC.2009.4802772Crossref

  • [10] J. Zakis et al., “New active clamp circuit for current-fed galvanically isolated DC/DC converters,” in 8th Int. Conf. on Compatibility and Power Electron., CPE 2013, 5–7 June 2013, pp. 353–358.Google Scholar

  • [11] J. Zakis, D. Vinnikov and I. Rankis, “Steady state analysis of the galvanically isolated DC/DC converter with a commutating LC filter,” in IEEE Int. Conf. on Industrial Technology, ICIT 2012, 19–21 March 2012, pp. 827–832. http://dx.doi.org/10.1109/ICIT.2012.6210041Crossref

  • [12] A. K. Rathore and X. Li, “Comparison of zero-voltage-switching current-fed full-bridge and half-bridge isolated Dc/Dc converters with active-clamp,” in IEEE 9th Int. Conf. Power Electron. and Drive Systems, PEDS 2011, 5–8 Dec. 2011, pp. 133–138. http://dx.doi.org/10.1109/PEDS.2011.6147236Crossref

  • [13] D. Vinnikov et al., “New step-up DC/DC converter for fuel cell powered distributed generation systems: Some Design Guidelines,” Przegląd Elektrotechniczny, vol. 86, 2010, pp. 245–252.Google Scholar

  • [14] L. Zhu et al., “New start-up schemes for isolated full-bridge boost converters,” in 15th Annu. IEEE Applied Power Electron. Conf. and Exposition, APEC 2000, vol. 1, 2000, pp. 309–313.Google Scholar

  • [15] R. Pittini, Z. Zhang, and M. A. E. Andersen, “Isolated full bridge boost DC-DC converter designed for bidirectional operation of fuel cells/electrolyzer cells in grid-tie applications,” in 15th European Conf. Power Electron. and Applications, EPE 2013, 2–6 Sept. 2013, pp. 1–10.Google Scholar

  • [16] N. Mohan, T. Undeland and W. Robbins, Power Electronics: Converters, Applications, and Design, 3rd ed., Wiley, 2002.Google Scholar

  • [17] R. Erickson and D. Maksimovic, Fundamentals of Power Electronics, Springer Science & Business Media, 2001. http://dx.doi.org/10.1007/b100747Crossref

  • [18] L. Liivik, D. Vinnikov and T. Jalakas, “Synchronous Rectification in Quasi-Z-Source Converters: Possibilities and Challenges,” in IEEE Int. Conf. Intelligent Energy and Power Systems, IEPS 2014, Kyiv, Ukraine, June 2–6, 2014. http://dx.doi.org/10.1109/ieps.2014.6874196Crossref

  • [19] D. Vinnikov, O. Husev and I. Roasto, “Lossless Dynamic Models of the Quasi-Z-Source Converter Family,” Scientific J. of Riga Technical University. Power and Electrical Engineering, vol. 29, 2011, pp. 73–78.Google Scholar

  • [20] R. Kosenko, O. Husev, and A. Chub, “Full soft-switching high step-up current-fed DC-DC converters with reduced conduction losses,” in 5th Int. Conf. Power Engineering, Energy and Electrical Drives, POWERENG 2015, 2015, submitted for publication.Google Scholar

  • [21] J. Zakis, et al., “Practical Design Guidelines of qZSI Based Step-Up DC/DC Converter,” Scientific J. of Riga Technical University. Power and Electrical Engineering, vol. 27, 2010, pp. 108–115.Google Scholar

  • [22] S. Kouro, et al., “Grid-Connected Photovoltaic Systems: An Overview of Recent Research and Emerging PV Converter Technology,” IEEE Ind. Electronics Magazine, vol. 9 no. 1, 2015, pp. 47–61. http://dx.doi.org/10.1109/MIE.2014.2376976Crossref

  • [23] D. Vinnikov and I. Roasto, “Quasi-Z-Source-Based Isolated DC/DC Converters for Distributed Power Generation,” IEEE Trans. Ind. Electronics, vol. 58, no. 1, 2011, pp. 192–201. http://dx.doi.org/10.1109/TIE.2009.2039460Web of ScienceCrossref

  • [24] U. R. Prasanna and A. K. Rathore, “Extended Range ZVS Active-Clamped Current-Fed Full-Bridge Isolated DC/DC Converter for Fuel Cell Applications: Analysis, Design, and Experimental Results,” IEEE Trans. Ind. Electronics, vol. 60, no. 7, 2013, pp. 2661–2672. http://dx.doi.org/10.1109/TIE.2012.2194977Crossref

About the article

Published Online: 2015-07-24

Published in Print: 2015-07-01

Citation Information: Electrical, Control and Communication Engineering, Volume 8, Issue 1, Pages 5–12, ISSN (Online) 2255-9159, DOI: https://doi.org/10.1515/ecce-2015-0001.

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© Riga Technical University. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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