Analysis of loss distribution of Conventional Boost, Z-source and Y-source Converters for wide power and voltage range

Brwene Salah Gadalla, Erik Schaltz, Yam Siwakoti, Frede Blaabjerg


Boost converters are needed in many applications which require the output voltage to be higher than the input voltage. Recently, boost type converters have been applied for industrial applications, and hence it has become an interesting topic of research. Many researchers proposed different impedance source converters with their unique advantages as having a high voltage gain in a small range of duty cycle ratio. However, the thermal behaviour of the semiconductor devices and passive elements in the impedance source converter is an important issue from a reliability point of view and it has not been investigated yet. Therefore, this paper presents a comparison between the conventional boost, the Z-source, and the Y-source converters based on a thermal evaluation of the semiconductors. In addition, the three topologies are also compared with respect to their efficiency. In this study the results show that the boost converter has higher efficiency than the Zsource and Y-source converter for these specific voltage gain of 2 and 4. The operational principle, mathematical derivations, simulation results and final comparisons are presented in this paper.


boost converter; Z-source converter; Y-source converter; winding losses; core losses; gain; thermal design; reliability

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S. Yang, D. Xiang, A. Bryant, P. Mawby, L. Ran, and P. Tavner, “Condition monitoring for device reliability in power electronic converters: A review,” IEEE Trans. on Power Electronics, vol. 25, no. 11, pp. 2734–2752, Nov. 2010.

H. Chung, H. Wang, F. Blaabjerg, and M. Pecht, Reliability of Power Electronics Converter Systems. The Institution of Engineering and Technology (IET), Dec. 2015.

Y. Siwakoti, F. Z. Peng, F. Blaabjerg, P. C. Loh, and G. Town, “Impedance-source networks for electric power conversion part i: A topological review,” IEEE Trans. on Power Electronics, vol. 30, no. 2, pp. 699–716, Feb 2015.

F. Z. Peng, “Z-source inverter,” IEEE Trans. on Industry Applications, vol. 39, no. 2, pp. 504–510, Mar 2003.

W. T. Franke, M. Mohr, and F. W. Fuchs, “Comparison of a z-source inverter and a voltage-source inverter linked with a dc/dc-boost converter for wind turbines concerning their efficiency and installed semiconductor power,” in Proc. of IEEE Power Electronics Specialists Conference (PESC), June 2008, pp. 1814–1820.

N. Baker, M. Liserre, L. Dupont, and Y. Avenas, “Improved reliability of power modules: A review of online junction temperature measurement methods,” IEEE Industrial Electronics Magazine, vol. 8, no. 3, pp. 17–27, Sept 2014.

B. Gadalla, E. Schaltz, Y. Siwakoti, and F. Blaabjerg, “Thermal performance and efficiency investigation of conventional boost, z-source and y-source converters,” in IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC), June 2016, pp. 1–6.

K. Ramtek and Y. Nagpur, “Dynamic modeling and controller design for z-source dc-dc converter,” International Journal of Scientific Engineering and Technology, vol. 2, no. 4, pp. 272–277, Apr. 2013.

F. Z. Peng, M. Shen, and Z. Qian, “Maximum boost control of the z-source inverter,” in Proc. of IEEE 35th Annual Power Electronics Specialists Conference (PESC), vol. 1, June 2004, pp. 255–260 Vol.1.

Y. Siwakoti, P. C. Loh, F. Blaabjerg, and G. Town, “Y-source impedance network,” in Proc. of 29th Annual IEEE Applied Power Electronics Conference and Exposition (APEC), March 2014, pp. 3362–3366.

Y. Siwakoti, P. C. Loh, F. Blaabjerg, S. Andreasen, and G. Town, “Y source boost dc/dc converter for distributed generation,” IEEE Trans. on Industrial Electronics, vol. 62, no. 2, pp. 1059–1069, Feb 2015.

B. Gadalla, E. Schaltz, Y. Siwakoti, and F. Blaabjerg, “Investigation of efficiency and thermal performance of the y-source converters for a wide voltage range,” Journal of Renewable Energy and Sustainable Development, vol. 1, no. 2, pp. 300–305, Jan. 2016.

Magnetics. Magnetics powder core catalog. [Online]. Available:

Metglas. Powerlite inductor cores. [Online]. Available: uploads/catalogs/metglas/powerlite.pdf

R. W. Erickson and D. Maksimovic, Fundamentals of Power Electronics, Second Edition. Springer Science + Bussiness Media, LLC, May 2001.



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