A Cost-Effective Design and Analysis of Full Bridge LLC Resonant Converter

LLC (Inductor-inductor-capacitor) resonant converter has lots of advantages over other type of resonant converters which include high efficiency, more reliable and have high power density. This paper presents the design and analysis of a full bridge LLC resonant converter. In addition to the operational principle, the ZVS and ZCS conditions are also explained with the DC characteristics. Simulation of the LLC resonant converter is performed in MATLAB/ Simulink and the practical prototype setup is analyzed in Proteus software. The result is verified through analysis and design of a low cost, 200 watt prototype converter.

• Kaibalya Prasad Panda
• Sreyasee Rout

• LLC
• Proteus
• Resonant converter ZCS
• ZVS.

[1] R. Beiranvand, B. Rashidian, M. R. Zolghadri, and S. M. H. Alavi, “Using LLC resonant converter for designing wide-range voltage source”, IEEE Trans. Industrial Electron., vol. 58, no. 5, pp. 1746-1756, May 2011.
[2] F. Musavi, M. Craciun, D. S. Gautam, W. Eberle, and W. G. Dunford, “An LLC resonant dc-dc converter for wide output voltage range battery charging applications”, IEEE Trans. Power Electron., vol. 28, no. 12, pp. 5437-5445, Dec. 2013.
[3] R.L. Steigerwald, “A Comparison of Half Bridge Resonant Converter Topologies”, IEEE Trans. on Power Electronics, pp. 174 – 182, 1988.
[4] H. Hu, X. Fang, Q. Zhang, Z. J. Shen, and I. Batarseh, “Optimal design considerations for a modified LLC converter with wide input voltage range capability suitable for PV applications”, in Proc. IEEE Energy Conversion Congress and Expo (ECCE), pp. 3096-3103, 2011.
[5] B. Yang, F. C. Lee, A. J. Zhang, and G. Huang, “LLC resonant converter for front end DC/DC conversion”, in Proc. IEEE Appl. Power Electron. Conf. (APEC), pp. 1108-1112, 2002.
[6] F. Canales, P. Barbosa, and F. C. Lee, “A wide input voltage and load output variations fixed-frequency ZVS DC/DC LLC resonant converter for high-power applications”, in Proc. IEEE Appl. Power Electron. Conf. (APEC), pp. 2306-2313, 2002.
[7] S. Y. Tseng, S.T. Peng, Y.J. Chuang, “Multi-switch Driving Circuit with LLC Resonant Circuit for High Pulsed-Voltage Generator”, in Proc. IEEE PEDS, pp.803-808, Dec. 2011.
[8] G. Ivensky, S. Bronshtein, A. Abramovitz, “Approximate Analysis of Resonant LLC DC-DC Converter”, in IEEE Trans. Power Electron., vol.26, no.11, pp.3274-3284, Nov. 2011.
[9] H. Mizutani, T. Mishima, M. Nakaoka, “A Novel LLC Multi-Resonant DC-DC Converter with an Anti-Resonant Circuit”, in Proc. IPEMC, pp.1324-1335, Jun. 2012.
[10] B.C. Kim, K.B. Park, C.E. Kim, B.H. Lee, G.W. Moon, “LLC Resonant Converter with Adaptive Link-Voltage Variation for a High-Power Density Adapter”, in IEEE Trans. Power Electron., vol.25, no.9, pp.2248-2252, Sep. 2010.
[11] Hangseok Choi, “Design Considerations for an LLC Resonant Converter”, in Fairchild Power Seminar Fairchild Semiconductor, 82-3, Dodangdong, Wonmi-gu, Bucheon-si, Gyeonggi-do, Korea, 2007.
[12] Y. Gu, L. Hang, U. Chen, Z. Lu, Z. Qian, and J. Li, “A simple structure of LLC resonant DC-DC converter for multi-output applications”, 20th Annual Meeting of Applied Power Electronics Conference, Vol 3, pp. 1485-1490, 2005.
[13] Bing Lu, Liu Wenduo, Yan Liang, Fred C. Lee and Jacobus D. Van Wyk, “Optimal Design Methodology of LLC Resonant Converters”, Proc. of APEC, pp: 533-538, 2006.
[14] Spiazzi, S. Buso, “Effect of a split transformer leakage inductance in the LLC converter with integrated megnatics”, in Proc. of IEEE COBEP, Brazilian, pp.135-140, 27-31 Oct. 2013.