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A Comprehensive Overview in Control Algorithms for High Switching-Frequency LLC Resonant Converter

Author

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  • Hwa-Pyeong Park

    (Energy Efficiency Division, Korea Institute of Energy Research, Daejeon 34129, Korea)

  • Mina Kim

    (Department of Electrical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea)

  • Jee-Hoon Jung

    (Department of Electrical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea)

Abstract

An LLC resonant converter has been widely used in various industrial applications because of its high cost-effectiveness, high power conversion efficiency, simple design methodology, and simple control algorithms using a pulse frequency modulation (PFM). In addition, the soft switching capability of the LLC resonant converter is good to obtain high switching frequency operations, which can get the high-power density of the power converter. Over the past years, several studies have been conducted to improve the performance of a high switching frequency LLC resonant converter with resonant tank design, optimal power stage design, and enhanced control algorithms. This paper is the review paper in terms of the control algorithms for the LLC resonant converter. It focuses on the overview of the high switching-frequency LLC resonant converter in terms of the control algorithms. The advanced control algorithm can improve power conversion efficiency, dynamic performance, tight output voltage regulation, and small electro-magnetic interference. The operational principles of the control algorithms are briefly explained to show their own characteristics and advantages. Thereafter, the research issues for the future works will be discussed in the conclusion.

Suggested Citation

  • Hwa-Pyeong Park & Mina Kim & Jee-Hoon Jung, 2020. "A Comprehensive Overview in Control Algorithms for High Switching-Frequency LLC Resonant Converter," Energies, MDPI, vol. 13(17), pages 1-17, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4455-:d:405585
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    References listed on IDEAS

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    1. Bor-Ren Lin, 2019. "Implementation of a Parallel-Series Resonant Converter with Wide Input Voltage Range," Energies, MDPI, vol. 12(21), pages 1-18, October.
    2. Fang Li & Ruixiang Hao & Haodong Lei & Xinyi Zhang & Xiaojie You, 2019. "The Influence of Parasitic Components on LLC Resonant Converter," Energies, MDPI, vol. 12(22), pages 1-16, November.
    3. Bor-Ren Lin, 2019. "Resonant Converter with Soft Switching and Wide Voltage Operation," Energies, MDPI, vol. 12(18), pages 1-17, September.
    4. Hwa-Rang Cha & Rae-Young Kim, 2019. "Voltage Balance Switching Scheme for Series-Connected SiC MOSFET LLC Resonant Converter," Energies, MDPI, vol. 12(20), pages 1-17, October.
    5. Eun-Soo Kim & Jae-Sung Oh, 2019. "High-Efficiency Bidirectional LLC Resonant Converter with Primary Auxiliary Windings," Energies, MDPI, vol. 12(24), pages 1-14, December.
    6. Yuanjun Liu & Guiping Du & Xueyi Wang & Yanxiong Lei, 2019. "Analysis and Design of High-Efficiency Bidirectional GaN-Based CLLC Resonant Converter," Energies, MDPI, vol. 12(20), pages 1-13, October.
    7. Yuan-Chih Lin & Ding-Tang Chen & Ching-Jan Chen, 2019. "Flux-Balance Control for LLC Resonant Converters with Center-Tapped Transformers," Energies, MDPI, vol. 12(17), pages 1-18, August.
    8. Sajib Chakraborty & Hai-Nam Vu & Mohammed Mahedi Hasan & Dai-Duong Tran & Mohamed El Baghdadi & Omar Hegazy, 2019. "DC-DC Converter Topologies for Electric Vehicles, Plug-in Hybrid Electric Vehicles and Fast Charging Stations: State of the Art and Future Trends," Energies, MDPI, vol. 12(8), pages 1-43, April.
    9. Omar Abdel-Rahim & Nehmedo Alamir & Mohamed Abdelrahem & Mohamed Orabi & Ralph Kennel & Mohamed A. Ismeil, 2020. "A Phase-Shift-Modulated LLC-Resonant Micro-Inverter Based on Fixed Frequency Predictive-MPPT," Energies, MDPI, vol. 13(6), pages 1-16, March.
    10. Jung-Woo Yang & Sang-Kyoo Han, 2019. "A Si-FET-Based High Switching Frequency Three-Level LLC Resonant Converter," Energies, MDPI, vol. 12(16), pages 1-24, August.
    11. Dongkwan Yoon & Sungmin Lee & Younghoon Cho, 2020. "Design Considerations of Series-Connected Devices Based LLC Converter," Energies, MDPI, vol. 13(1), pages 1-14, January.
    12. Hiroki Watanabe & Jun-ichi Itoh & Naoki Koike & Shinichiro Nagai, 2019. "PV Micro-Inverter Topology Using LLC Resonant Converter," Energies, MDPI, vol. 12(16), pages 1-11, August.
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    Cited by:

    1. Seyedamin Valedsaravi & Abdelali El Aroudi & Luis Martínez-Salamero, 2022. "Review of Solid-State Transformer Applications on Electric Vehicle DC Ultra-Fast Charging Station," Energies, MDPI, vol. 15(15), pages 1-35, August.
    2. An-Yeol Ko & Seong-Yun Kang & Il-Kuen Won & Junsin Yi & Chung-Yuen Won, 2022. "Development of a Resonant Auxiliary Power Supply Control Algorithm and Resonant Destruction Detecting for Railway Vehicles," Energies, MDPI, vol. 15(21), pages 1-21, October.
    3. Tsvetana Grigorova & Aleksandar Vuchev, 2023. "LLC Resonant Converter as a Current Source Using Simple Trajectory Control," Energies, MDPI, vol. 16(12), pages 1-22, June.
    4. Chun-Yu Liu & Yi-Hua Liu & Shun-Chung Wang & Zong-Zhen Yang & Song-Pei Ye, 2021. "An Adaptive Synchronous Rectification Driving Strategy for Bidirectional Full-Bridge LLC Resonant Converter," Energies, MDPI, vol. 14(8), pages 1-16, April.

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