Novelty Half-Bridge LLC Resonant Converter with Magnetizing Inductance and Hybrid Rectifier
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Abstract
Half-Bridge LLC Resonant converters are widely used in high-power supply applications due to their high efficiency and ability to operate at high frequencies. However, under hold-up conditions or during large fluctuations in input voltage, conventional topologies often experience reduced output stability and increased losses. Therefore, a method that can maintain efficiency and output voltage stability without excessively broadening the switching frequency range is required. To address this, this study proposes a Novelty Half-Bridge LLC Resonant Converter with Magnetizing Inductor and Hybrid Rectifier (NHB-LLCRC-MIHR), incorporating a magnetizing inductor (Lm) in the primary path and a MOSFET-based hybrid rectifier on the secondary side. The research methodology was conducted using MATLAB/Simulink simulation, focusing on five main areas, including optimal switching frequency conditions, operating thresholds, DC conversion ratio (Vo/Vs), comparison of output voltage with conventional topologies, and analysis of output voltage ripple. Simulation results demonstrate that NHB-LLCRC-MIHR can maintain a more stable output voltage, lower ripple, and increase efficiency compared to conventional converters. Thus, this topology shows significant potential for industrial applications that demand high efficiency and optimal power stability.
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References
S. Zhao, X. Liang, L. Wang, H. Zhang, G. Li, and J. Chen, “A fault diagnosis method for analog circuits based on EEMD-PSO-SVM,” Heliyon, vol. 10, no. 18, p. e38064, 2024.
Y. Li and others, “State-of-the-Art Review on Topology and Deductive Methods of LLC Resonant Converter,” J. Electr. Eng. & Technol., vol. 19, no. 4, pp. 2217–2237, 2024.
A. M. Hassanein, L. A. Said, A. H. Madian, A. G. Radwan, and A. M. Soliman, “Active and passive sensitivity analysis for the second-order active RC filter families using operational amplifier: a review,” Analog Integr. Circuits Signal Process., vol. 113, no. 2, pp. 257–286, 2022.
H. Temurtacs, “The estimation of low and high-pass active filter parameters with opposite charged system search algorithm,” Expert Syst. Appl., vol. 155, p. 113474, 2020.
B. Lu, W. Liu, Y. Liang, F. C. Lee, and J. D. Van Wyk, “Optimal Design Methodlogy for LLC Resonant Converter,” in Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2006, pp. 533–538.
E.-S. Kim and J.-S. Oh, “High-Efficiency Bidirectional LLC Resonant Converter with Primary Auxiliary Windings,” Energies, vol. 12, no. 24, p. 4692, 2019.
Y. Wei, Q. Luo, and A. Mantooth, “Overview of Modulation Strategies for LLC Resonant Converter,” IEEE Trans. Power Electron., vol. 35, no. 10, pp. 10423–10443, 2020.
J. Zhang and Z. Cai, “Hybrid Control Switching Technology for LLC Resonant Converter,” Energies, vol. 17, no. 24, p. 6250, 2024.
M. Altayeb and others, “Machine learning-based intelligent mode selection for adaptive-turns LLC resonant converters to maximize performance across wide voltage and load ranges,” World J. Eng., pp. 1–13, 2026.
H. Jiang and X. Yue, “Phase-Shifting Adaptive LLC Resonant Converter with Reduced Turn-Off Loss in Wide Voltage Application,” Energies, vol. 17, no. 7, p. 1555, 2024.
R. Unruh, J. Böcker, and F. Schafmeister, “Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple,” Electronics, vol. 14, no. 8, p. 1517, 2025.
E. Y. Rezaii and A. Carvalho, “Analytic discrete state-space model of LLC resonant converter,” e-Prime - Adv. Electr. Eng. Electron. Energy, vol. 9, p. 100625, 2024.
Z. Sun, T. Zhang, C. Ruan, Q. Yu, and C. Feng, “Synchronous Rectification Method for CLLC Resonant Converters Based on State-Trajectory Models,” Appl. Sci., vol. 15, no. 8, p. 4372, 2025.
I.-H. Cho, Y.-D. Kim, and G.-W. Moon, “A Half-Bridge LLC Resonant Converter Adopting Boost PWM Control Scheme for Hold-Up State Operation,” IEEE Trans. Power Electron., vol. 29, no. 2, pp. 841–850, 2014.
STMicroelectronics, “An Introduction to LLC Resonant Half-Bridge Converter,” 2008.
Fairchild Semiconductor, “AN-4151 Half-Bridge LLC Resonant Converter Design Using FSFR-Series Fairchild Power Switch (FPS),” 2007.
Z. Luo, Z. Wu, X. Quan, X. Xie, X. Dou, and Q. Hu, “Synchronous rectification of LLC resonant converters based on resonant inductor voltage,” Front. Energy Res., vol. 11, p. 1199397, 2023.
R. Beiranvand, M. R. Zolghadri, B. Rashidian, and S. M. H. Alavi, “Optimizing the LLC--LC Resonant Converter Topology for Wide-Output-Voltage and Wide-Output-Load Applications,” IEEE Trans. Power Electron., vol. 26, no. 11, pp. 3192–3204, 2011.
H. Wang and Z. Li, “A PWM LLC Type Resonant Converter Adapted to Wide Output Range in PEV Charging Applications,” IEEE Trans. Power Electron., vol. 33, no. 5, pp. 3791–3801, 2018.
U. Ondin and A. Balikci, “A Transformer Design for High-Voltage Application Using LLC Resonant Converter,” Energies, vol. 16, no. 3, p. 1377, 2023.
J. Zeng, G. Zhang, S. S. Yu, B. Zhang, and Y. Zhang, “LLC resonant converter topologies and industrial applications --- A review,” Chinese J. Electr. Eng., vol. 6, no. 3, pp. 73–84, 2020.
J. Sun, H. Wu, X. Tang, F. Yang, and Y. Xing, “Interleaved LLC Resonant Converter with Auxiliary Regulation of Rectifier,” Trans. China Electrotech. Soc., vol. 36, no. 10, pp. 2072–2080, 2021.
A. J. Aher and S. S. Mopari, “Comparative Analysis Of LLC Resonant Converter And Z Source Resonant DC-DC Converter Designed For Wide Input Voltage And Variations In Load,” vol. 8, no. 12, 2019.
B.-H. Lee, M.-Y. Kim, C.-E. Kim, K.-B. Park, and G.-W. Moon, “Analysis of LLC Resonant Converter considering effects of parasitic components,” in 31st International Telecommunications Energy Conference (INTELEC), 2009, pp. 1–6.
D.-K. Kim, S. Moon, C.-O. Yeon, and G.-W. Moon, “High Efficiency LLC Resonant Converter with High Voltage Gain Using Auxiliary LC Resonant Circuit,” IEEE Trans. Power Electron., p. 1, 2015.