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A Linearized Large Signal Model of an LCL-Type Resonant Converter

Author

Listed:
  • Hong-Yu Li

    (Faculty of Information Technology, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau SAR, China)

  • Xiaodong Li

    (Faculty of Information Technology, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau SAR, China)

  • Ming Lu

    (Faculty of Information Technology, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau SAR, China)

  • Song Hu

    (Faculty of Information Technology, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau SAR, China)

Abstract

In this work, an LCL-type resonant dc/dc converter with a capacitive output filter is modeled in two stages. In the first high-frequency ac stage, all ac signals are decomposed into two orthogonal vectors in a synchronous rotating d–q frame using multi-frequency modeling. In the dc stage, all dc quantities are represented by their average values with average state-space modeling. A nonlinear two-stage model is then created by means of a non-linear link. By aligning the transformer voltage on the d -axis, the nonlinear link can be eliminated, and the whole converter can be modeled by a single set of linear state-space equations. Furthermore, a feedback control scheme can be formed according to the steady-state solutions. Simulation and experimental results have proven that the resulted model is good for fast simulation and state variable estimation.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:3:p:1848-1864:d:46453
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    References listed on IDEAS

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    1. Gao-Yuan Hu & Xiaodong Li & Bo-Yue Luan, 2014. "A Generalized Approach for the Steady-State Analysis of Dual-Bridge Resonant Converters," Energies, MDPI, vol. 7(12), pages 1-21, November.
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    Cited by:

    1. 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.
    2. Yifeng Wang & Liang Yang & Fuqiang Han & Shijie Tu & Weiya Zhang, 2017. "A Study of Two Multi-Element Resonant DC-DC Topologies with Loss Distribution Analyses," Energies, MDPI, vol. 10(9), pages 1-18, September.
    3. Song Hu & Xiaodong Li & Ming Lu & Bo-Yue Luan, 2015. "Operation Modes of a Secondary-Side Phase-Shifted Resonant Converter," Energies, MDPI, vol. 8(11), pages 1-17, October.
    4. Pedro J. Villegas & Juan A. Martín-Ramos & Juan Díaz & Juan Á. Martínez & Miguel J. Prieto & Alberto M. Pernía, 2017. "A Digitally Controlled Power Converter for an Electrostatic Precipitator," Energies, MDPI, vol. 10(12), pages 1-24, December.

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    1. Song Hu & Xiaodong Li & Ming Lu & Bo-Yue Luan, 2015. "Operation Modes of a Secondary-Side Phase-Shifted Resonant Converter," Energies, MDPI, vol. 8(11), pages 1-17, October.

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