In this paper, the modified LCC type of series-parallel Resonant Converter (RC) was designed and state-space modeling analysis was implemented. In this proposed converter, one leg of full bridge diode rectifier is replaced with Synchronous Rectifier (SR) switches. The proposed LCC converter is controlled using frequency modulation in the nominal state. During hold-up time, the SRswitches control is changed from in-phase to phase-shifted gate signal to obtain high DC voltage conversion ratio. Furthermore, the closed loop PI and fuzzy provide control on the output side without decreasing the switching frequency. The parameter such as conduction loss on primary and secondary side, switching loss, core and copper also reduced. Simultaneously, the efficiency is increased about 94.79 is realized by this scheme. The proposed converter with an input of 40 V is built to produce an output of 235 V with the help of ZVS boost converter [1] even under line and load disturbances. As a comparison, the closed loop fuzzy controller performance is feasible and less sensitive than PI controller.
Madhanakkumar, N., Sivakumaran, T.S., Irusapparajan, G. and Sujitha, D. (2014) Closed Loop Control of LLC Resonant Converter Incorporating ZVS Boost Converter. International Journal of Engineering and Technology, 6.
Fang, X., Hu, H.B., Chen, F., Somani, U., Auadisian, E., Shen, J. and Batarseh, I. (2013) Efficiency-Oriented Optimal Design of the LLC Resonant Converter Based on Peak Gain Placement. IEEE Transactions on Power Electronics, 28.
Oeder, C. (2010) Analysis and Design of a Low-Profile LLC Converter. IEEE International Symposium on Industrial Electronics, 3859-3864. http://dx.doi.org/10.1109/isie.2010.5637747
Xie, X., Zhang, J., Zhao, C., Zhao, Z. and Qian, Z. (2007) Analysis and Optimization of LLC Resonant Converter with a Novel Over-Current Protection Circuit. IEEE Transactions on Power Electronics, 22, 435-443. http://dx.doi.org/10.1109/TPEL.2006.889919
Foster, M.P., Gould, C.R., Gilbert, A.J., Stone, D.A. and Bingham, C.M. (2008) Analysis of CLL Voltage-Output Resonant Converters Using Describing Functions. IEEE Transactions on Power Electronics, 23, 1772-1781. http://dx.doi.org/10.1109/TPEL.2008.924835
Duerbaum, T. (1998) First Harmonic Approximation including Design Constraints. Twentieth International Telecommunications Energy Conference Proceedings, 321-328.
Choi, W.-Y., Kwon, J.-M. and Kwon, B.-H. (2006) High-Performance Front-End Rectifier System for Telecommunication Power Supplies. IEE Proceedings—Electric Power Applications, 153, 473-482. http://dx.doi.org/10.1049/ip-epa:20050257
de Groot, H., Janssen, E., Pagano, R. and Schetters, K. (2007) Design of a 1-MHz LLC Resonant Converter Based on a DSP-Driven SOI Half-Bridge Power MOS Module. IEEE Transactions on Power Electronics, 22, 2307-2320. http://dx.doi.org/10.1109/TPEL.2007.904203
Yang, B., Lee, F.C., Zhang, A.J. and Huang, G. (2002) LLC Resonant Converter for Front End DC-DC Conversion. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition, 1108-1112.
Cheng, J.H. and Witulski, A.F. (1998) Analytic Solutions for LLCC Parallel Resonant Converter Simplify Use of Two- and Three-Element Converters. IEEE Transactions on Power Electronics, 13, 235-243. http://dx.doi.org/10.1109/63.662828
Lee, B., Kim, M., Kim, C., Park, K. and Moon, G. (2009) Analysis of LLC resonant Converter Considering Effects of Parasitic Components. International Telecommunications Energy Conference, 1-6. http://dx.doi.org/10.1109/intlec.2009.5351740
Ivensky, G., Bronshtein, S. and Abramovitz, A. (2011) Approximate Analysis of Resonant LLC DC-DC Converter. IEEE Transactions on Power Electronics, 26, 3274-3284. http://dx.doi.org/10.1109/TPEL.2011.2142009
Lin, B.-R. and Du, Y.-K. (2015) Medium Voltage Resonant Converter with Balanced Input Capacitor Voltages and Output Diode Currents. Journal of Power Electronics, 15, 389-398. http://dx.doi.org/10.6113/JPE.2015.15.2.389
Beiranvand, R., Rashidian, B., Zolghadri, M.R. and Alavi, S.M.H. (2010) Designing an Adjustable Wide Range Regulated Current Source. IEEE Transactions on Power Electronics, 25, 197-208. http://dx.doi.org/10.1109/TPEL.2009.2027237
Steigerwald, R.L. (1988) A Comparison of Half-Bridge Resonant Converter Topologies. IEEE Transactions on Power Electronics, 3, 174-182. http://dx.doi.org/10.1109/63.4347
Liu, T., Zhou, Z., Xiong, A., Zeng, J. and Ying, J. (2006) A Novel Precise Design Method for LLC Series Resonant Converter. Twenty-Eighth International Telecommunications Energy Conference, 1-6. http://dx.doi.org/10.1109/intlec.2006.251606
Fang, X., Hu, H., Shen, J. and Batarseh, I. (2012) Operation Mode Analysis and Peak Gain Approximation of the LLC Resonant Converter. IEEE Transactions on Power Electronics, 27, 1985-1995. http://dx.doi.org/10.1109/TPEL.2011.2168545
Lu, B., Liu, W., Liang, Y., Lee, F.C. and van Wyk, J.D. (2006) Optimal Design Methodology for LLC Resonant Converter. Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2, 6.
Batarseh, I. (1995) State-Plane Approach for the Analysis of Half-Bridge Parallel Resonant Converters. IEE Proceedings—Circuits, Devices and Systems, 142, 200-204. http://dx.doi.org/10.1049/ip-cds:19951890
Bhat, A.K.S. (1998) A Generalized Steady-State Analysis of Resonant Converters Using Two-Port Model and Fourier-Series Approach. IEEE Transactions on Power Electronics, 13, 142-151. http://dx.doi.org/10.1109/63.654968
Batarseh, I., Liu, R., Ortiz-Conde, A., Yacoub, A. and Siri, K. (1994) Steady State Analysis and Performance Characteristics of the LLC-Type Parallel Resonant Converter. Power Electronics Specialists Conference, 597-606. http://dx.doi.org/10.1109/pesc.1994.349675
Lazar, J.F. and Martinelli, R. (2001) Steady-State Analysis of the LLC Series Resonant Converter. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2, 728-735. http://dx.doi.org/10.1109/apec.2001.912451
Drofenik, U. and Kolar, J.W. A General Scheme for Calculating Switching- and Conduction-Losses of Power Semiconductors in Numerical Circuit Simulations of Power Electronic Systems. Power Electronic Systems Laboratory (PES), ETH Zurich ETH-Zentrum, Zurich. www.pes.ee.ethz.ch
Kutkut, N.H., Lee, C.Q. and Batarseh, I. (1998) A Generalized Program for Extracting the Control Characteristics of Resonant Converters via the State-Plane Diagram. IEEE Transactions on Power Electronics, 13, 58-66. http://dx.doi.org/10.1109/63.654959