An LLC Resonant Half-Bridge Converter Optimal Design Using First Harmonic Approximation: A Complete Step-by-Design

Authors

  • G. Kiran Kumar School of Electrical Engineering, Vellore Institute of Technology, Vellore Associate professor, TIFAC-CORE, Vellore Institute of Technology, Vellore
  • D. Elangovan School of Electrical Engineering, Vellore Institute of Technology, Vellore Associate professor, TIFAC-CORE, Vellore Institute of Technology, Vellore

DOI:

https://doi.org/10.13052/dgaej2156-3306.3836

Keywords:

LLC resonant converter, first harmonic approximation (FHA), soft-switching, zero voltage switching, zero current switching

Abstract

There are several industrial uses for LLC resonant converters. The outcome of the converter is greatly influenced by the design and analysis methodologies used. An LLC resonant converter has been designed based on first harmonic approximation (FHA) modelling, and an optimal design technique has been provided in this work. The goal of this research is to provide a thorough design technique for an LLC resonant converter, based on rigorous quantitative analysis of the circuit’s steady-state performance. This study uses FHA technique, which greatly facilitates the model of the system, resulting in a linear circuit that can be analyzed using a standard complex ac-circuit analysis. The FHA methodology is used to establish circuit characteristics and to estimate the outcomes. Although half-bridge power converters are frequently employed in isolated, converters with high-voltage inputs, and medium-power applications are frequently constructed with resonant switching to increase efficiency, a feature that adds complexity but also provides various performance benefits. Two major benefits of the LLC resonant architecture are the soft-switching capabilities of the Power MOSFETs and secondary rectifiers, as well as the ability to operate at zero load. Additionally, the LLC resonant converter is simulated and the results are confirmed using PSIM.

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Author Biographies

G. Kiran Kumar, School of Electrical Engineering, Vellore Institute of Technology, Vellore Associate professor, TIFAC-CORE, Vellore Institute of Technology, Vellore

G. Kiran Kumar received the B.Tech degree in Electrical and Electronics Engineering from Jawaharlal Nehru Technological University, Anantapur, India and M.Tech Degree in Power Electronics and Drives from Vellore Institute of Technology, Vellore, India. He is perusing Ph.D. degree in Power Electronics in the School of Electrical Engineering, Vellore Institute of Technology, and Vellore, India. His current research interest includes high efficiency and high frequency switch mode power supply, fault-diagnosis, and fault-tolerant DC-DC converters for HEV.

D. Elangovan, School of Electrical Engineering, Vellore Institute of Technology, Vellore Associate professor, TIFAC-CORE, Vellore Institute of Technology, Vellore

D. Elangovan is an associate professor of Energy and power electronics department in School of Electrical Engineering, and also the deputy director of TIFAC-CORE, Vellore Institute of Technology, Vellore, India. He received the Ph.D. degree in Power Electronics and working as Associate Professor in School of Electrical Engineering, VIT, and Vellore, India. He has published more than 70 peer-reviewed journals and conference papers. His current research interests include wireless power transfer, modelling and controlling of DC-DC power converters, fault-diagnosis, and fault-tolerant DC-DC converters for HEV.

References

Y. Tran, F. D. Freijedo, and D. Dujic, “Open-loop power sharing characteristic of a three-port resonant LLC converter,” CPSS Trans. Power Electron. Appl., vol. 4, no. 2, pp. 171–179, Jun. 2019.

Y. Wei, N. Altin, Q. Luo, and A. Nasiri, “A high efficiency, decoupled on-board battery charger with magnetic control,” in Proc. 7th Int. Conf. Renewable Energy Res. Appl., 2018, pp. 920–925.

B. Yang, F. C. Lee, A. J. Zhang, and G. Huang, “LLC resonant converter for front end DC/DC conversion,” in Proc. 17th Annu. IEEE Appl. Power Electron. Conf. Expo., 2002, pp. 1108–1112.

Y. Wei, Q. Luo, J. M. Alonso, and A. H. Mantooth, “A magnetically controlled single-stage AC/DC converter,” IEEE Trans. Power Electron., vol. 35, no. 9, pp. 8872–8877, Sep. 2020.

S. Chen et al., “Research on topology of the high step-up boost converter with coupled inductor,” IEEE Trans. Power Electron., vol. 34, no. 11, pp. 10733–10745, Nov. 2019.

Y. Wei, Q. Luo, Z. Wang, L. Wang, J. Wang, and J. Chen, “Design of LLC resonant converter with magnetic control for LEV application,” in Proc. IEEE 10th Int. Symp. Power Electron. Distrib. Gener. Syst., 2019, pp. 854–859.

Y. Wei, Q. Luo, and A. Mantooth, “Comprehensive analysis and design of LLC resonant converter with magnetic control,” CPSS Trans. Power Electron. Appl., vol. 4, no. 4, pp. 265–275, Dec. 2019.

Y. Shen, W. Zhao, Z. Chen, and C. Cai, “Full-bridge LLC resonant converter with series-parallel connected transformers for electric vehicle on-board charger,” IEEE Access, vol. 6, pp. 13490–13500, 2018.

C. Hua, Y. Fang, and C. Lin, “LLC resonant converter for electric vehicle battery chargers,” IET Power Electron., vol. 9, no. 12, pp. 2369–2376, Oct. 2016.

H.-D. Gui, Z. Zhang, X.-F. He, and Y.-F. Liu, “A high voltage-gain LLC micro-converter with high efficiency in wide input range for PV applications,” in Proc. IEEE Appl. Power Electron. Conf. Expo., 2014, pp. 637–642.

Y. Wei, Q. Luo, and A. H. Mantooth, “Overview of modulation strategies for LLC resonant converter,” IEEE Trans. Power Electron., vol. 35, no. 10, pp. 10423–10443, Oct. 2020.

Y. Wei, Q. Luo, X. Du, N. Altin, A. Nasiri, and J.M. Alonso, “A dual half bridge LLC resonant converter with magnetic control for battery charger application,” IEEE Trans. Power Electron., vol. 35, no. 2, pp. 2196–2207, Feb. 2020.

Yu, S. Y. and Kwasinski, A., “Realization and comparison of a new push-pull direct connected multiple-input converter family for distributed generation applications,” Proc. INTELEC, pp. 1–8, 2011.

Yang, B., Lee, F. C., Zhang, A. J. and Huang, G., “LLC resonant converter for front end DC/DC conversion,” Proc. APEC, pp. 1108–1112, 2002.

Huang, D., Lee, F. C. and Fu, D., “Classification and selection methodology for multi-element resonant converters,” Proc. APEC, pp. 558–565, 2011.

I. Batarseh, “Resonant Converter Topologies with Three and Four Energy Storage Elements”, IEEE Transactions on Power Electronics 9, vol. 1, 1994, pp. 64–73.

R. L. Steigerwald, “A Comparison of Half-Bridge Resonant Converter Topologies,” IEEE Transactions on Power Electronics 3, vol. 2, 1988, pp. 174–182.

A. Pawellek, A. Bucher, T. Duerbaum, “Analysis and Design of a Resonant LCC Converter for Low Profil Applications” Energy Conversion Congress and Exposition (ECCE), 2010, pp. 3333.

Huang, Hong. “FHA-based voltage gain function with harmonic compensation for LLC resonant converter.” In 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 1770–1777. IEEE, 2010.

C. Oeder, “Analysis and Design of a Low-Profile LLC Converter”, IEEE international Symposium on Industrial Electronics, Bari, Italy, 2010, pp. 3859–3864.

Wei, Yuqi, Quanming Luo, Zhiqing Wang, and Homer Alan Mantooth. “A complete step-by-step optimal design for LLC resonant converter.” IEEE Transactions on Power Electronics 36, no. 4 (2020): 3674–3691.

R. Beiranvand, B. Rashidian, M. R. Zolghadri, and S. M. H. Alavi, “A design procedure for optimizing the LLC resonant converter as a wide output range voltage source,” IEEE Trans. Power Electron., vol. 27, no. 8, pp. 3749–3763, Aug. 2012.

Z. Fang, S. Duan, C. Chen, X. Chen, and J. Zhang, “Optimal design method for LLC resonant converter with wide range output voltage,” in Proc. IEEE Appl. Power Electron. Conf. Expo., Long Beach, CA, Mar. 2013, pp. 2108–2109.

R. Yu, G. K. Y. Ho, B. M. H. Pong, B. W. K. Ling, and J. Lam, “Computeraided design and optimization of high-efficiency LLC series resonant converter,” IEEE Trans. Power Electron., vol. 27, no. 7, pp. 3243–3256, Jul. 2012.

X. Fang et al., “Efficiency-oriented optimal design of the LLC resonant converter based on peak gain placement,” IEEE Trans. Power Electron., vol. 28, no. 5, pp. 2285–2296, May 2013.

Texas Instruments, “Survey of resonant converter topologies” http://www.ti.com

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Published

2023-03-03

How to Cite

Kumar, G. K. ., & Elangovan, D. . (2023). An LLC Resonant Half-Bridge Converter Optimal Design Using First Harmonic Approximation: A Complete Step-by-Design. Distributed Generation &Amp; Alternative Energy Journal, 38(03), 841–874. https://doi.org/10.13052/dgaej2156-3306.3836

Issue

2023: Vol 38 Iss 3

Section

Articles