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http://dx.doi.org/10.6113/JPE.2010.10.6.680

Precise Analytical Solution for the Peak Gain of LLC Resonant Converters  

Hong, Sung-Soo (Dept. of Electrical Engineering, Kookmin University)
Cho, Sang-Ho (Dept. of Electrical Engineering, Kookmin University)
Roh, Chung-Wook (Dept. of Electrical Engineering, Kookmin University)
Han, Sang-Kyoo (Dept. of Electrical Engineering, Kookmin University)
Publication Information
Journal of Power Electronics / v.10, no.6, 2010 , pp. 680-685 More about this Journal
Abstract
Although LLC resonant converters have the advantages of a wide operation range and high efficiency, the lack of an analytical solution for the peak gain makes it difficult to optimize the resonant tank design, when considering not only the normal condition but also the holdup time requirement. In this paper, based on a mathematical analysis of a LLC resonant converter at the peak gain point, an analytical solution for the peak gain has been developed. By using the developed analytical solution, the peak gain with given resonant tank parameters can be obtained. To confirm the validity of the developed analytical solution, simulations and experimental results are compared.
Keywords
Holdup time; LLC resonant converter; Mathematical analysis; Peak gain;
Citations & Related Records

Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 4
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1 J-H. Jung and J-G. Kwon, "Theoretical analysis and optimal design of LLC resonant converter," Power electronics and applications, pp. 1-10, Jan. 2007.
2 B. Lu, W. Liu, Y. Liang, F. C. Lee, and J. D. van Wyk, "Optimal design methodology for LLC resonant converter," in Proc. IEEE APEC, pp.533- 538, Apr. 2006.
3 B. Yang, "Topology Investigation for Front End DC/DC Power Conversion for Distributed Power System," Doctor Philosophy in Electrical Engineering, Virginia Polytechnic Institute and State University, Sept., 2003.
4 B. R. Mower, "SSI: building compliant power elements for servers," in IEEE-APEC Proc., pp.23-27, 1999.
5 J. D. van Wyk, F. C. Lee, D. Boroyevich, Z. Liang, and K. Yao, "A future approach to integration in power electronics system," IEEE-IECON '03, Vol. 1, pp. 1008-1019, 2003.
6 F. C. Lee, J. D. van Wyk, D. Boroyevich, G. Lu, Z. Liang, and P. Barbosa, "Technology trends toward a system-in- a- module in power electronics," IEEE Circuits and Systems Magazine, Vol. 2, Issue 4, pp. 4-22, 2002.   DOI   ScienceOn
7 Y. Gu, Z. Lu, and Z. Qian, "DC/DC topology selection criterion," in Proc. IPEMC, pp. 508-512, 2004.
8 B. Yang, "Topology investigation for front end DC/DC power conversion for distributed power system," PhD thesis, Virginia Polytechnic Institute and Stage University, 2003.
9 T. Liu, Z. Zhou, A. Xiong, J. Zeng, and J. Ying, "A novel precise design method for LLC resonant converter," INTELEC '06, pp. 1-6, 2006.
10 B. Yang, F. C. Lee, A. J. Zhang, and G. Haung, "LLC resonant converter for front end DC/DC conversion," in Proc. IEEE APEC, pp. 1108-1112, 2002.