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Current Mode Control for LLC Series Resonant DC-to-DC Converters

Author

Listed:
  • Jinhaeng Jang

    (Power Electronics Team, LG Electronics, Pyungtaek-city, Kyungki-do 451-713, Korea)

  • Syam Kumar Pidaparthy

    (School of Electronics Engineering, Kyungpook National University, Daegu 702-701, Korea)

  • Byungcho Choi

    (School of Electronics Engineering, Kyungpook National University, Daegu 702-701, Korea)

Abstract

Conventional voltage mode control only offers limited performance for LLC series resonant DC-to-DC converters experiencing wide variations in operational conditions. When the existing voltage mode control is employed, the closed-loop performance of the converter is directly affected by unavoidable changes in power stage dynamics. Thus, a specific control design optimized at one particular operating point could become unacceptable when the operational condition is varied. This paper presents a new current mode control scheme which could consistently provide good closed-loop performance for LLC resonant converters for the entire operational range. The proposed control scheme employs an additional feedback from the current of the resonant tank network to overcome the limitation of the existing voltage mode control. The superiority of the proposed current mode control over the conventional voltage mode control is verified using an experimental 150 W LLC series resonant DC-to-DC converter.

Suggested Citation

  • Jinhaeng Jang & Syam Kumar Pidaparthy & Byungcho Choi, 2015. "Current Mode Control for LLC Series Resonant DC-to-DC Converters," Energies, MDPI, vol. 8(6), pages 1-16, June.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:6:p:6098-6113:d:51344
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    References listed on IDEAS

    as
    1. Hong-Yu Li & Xiaodong Li & Ming Lu & Song Hu, 2015. "A Linearized Large Signal Model of an LCL-Type Resonant Converter," Energies, MDPI, vol. 8(3), pages 1-17, March.
    2. Jae-Hyun Han & Young-Cheol Lim, 2015. "Design of an LLC Resonant Converter for Driving Multiple LED Lights Using Current Balancing of Capacitor and Transformer," Energies, MDPI, vol. 8(3), pages 1-20, March.
    3. Ming-Tse Kuo & Ming-Chang Tsou, 2015. "Simulation of Standby Efficiency Improvement for a Line Level Control Resonant Converter Based on Solar Power Systems," Energies, MDPI, vol. 8(1), pages 1-18, January.
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    Cited by:

    1. Ying-Chieh Chen & Liang-Rui Chen & Ching-Ming Lai & Yuan-Chih Lin & Ting-Jung Kuo, 2020. "Development of a DC-Side Direct Current Controlled Active Ripple Filter for Eliminating the Double-Line-Frequency Current Ripple in a Single-Phase DC/AC Conversion System," Energies, MDPI, vol. 13(18), pages 1-16, September.
    2. Shu-Huai Zhang & Feng-Zhang Luo & Yi-Feng Wang & Jiang-Hua Liu & Yong-Peng He & Yue Dong, 2017. "Control Method Based on Demand Response Needs of Isolated Bus Regulation with Series-Resonant Converters for Residential Photovoltaic Systems," Energies, MDPI, vol. 10(6), pages 1-21, May.
    3. Rutian Wang & Yuyang Wu & Guoqing He & Ying Lv & Jiaxing Du & Yanhao Li, 2018. "Impedance Modeling and Stability Analysis for Cascade System of Three-Phase PWM Rectifier and LLC Resonant Converter," Energies, MDPI, vol. 11(11), pages 1-15, November.

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