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Adaptive Second-Order Sliding Mode Control of Buck Converters with Multi-Disturbances

Author

Listed:
  • Yanmin Wang

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Weiqi Zhang

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Yalong Yang

    (Key Laboratory of Intelligent Building & Building Energy Saving, Anhui Jianzhu University, Hefei 230000, China)

  • Chen Xue

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Shibo Yuan

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Hanqing Zhang

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

Abstract

In this paper, a novel adaptive second-order sliding mode (2-SM) control approach, based on online zero-crossing detection, was proposed to solve the problems of the chattering and fixed control gain for buck converters with multi-disturbances. In modeling, the possible parameter perturbations and external disturbances of the converter system were contained. Instead of the traditional first-order sliding mode (1-SM), the twisting algorithm with 2-SM was adopted for the controller design, which could overcome the chattering problem and realize control continuity. Meanwhile, a novel adaptive mechanism was introduced to replace the conventional fixed control gain by time-varying control gain, the idea of which is to calculate the number of the zero-crossing points of the sliding surface online. As a result, the control magnitude of the improved controller could be reduced to a minimal admissible level, and the steady error of the output voltage could converge to the expected value. Furthermore, the robust stability of the converter system with multi-disturbances wads investigated. Comparative simulations and experiments validated the advantages of this paper as offering better robustness and control performance.

Suggested Citation

  • Yanmin Wang & Weiqi Zhang & Yalong Yang & Chen Xue & Shibo Yuan & Hanqing Zhang, 2022. "Adaptive Second-Order Sliding Mode Control of Buck Converters with Multi-Disturbances," Energies, MDPI, vol. 15(14), pages 1-19, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5139-:d:863354
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    References listed on IDEAS

    as
    1. Josep M. Olm & Domingo Biel, 2010. "Linear Robust Output Regulation in a Class of Switched Power Converters," Mathematical Problems in Engineering, Hindawi, vol. 2010, pages 1-22, July.
    2. Yanmin Wang & Yang Ge & Ping Zhang & Guangxin Duan, 2021. "Unified Approach for Robust Stability Analysis of Buck Converters with Discrete-Time Sliding Mode Control," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-14, June.
    3. Hwa-Rang Cha & Rae-Young Kim & Kyung-Ho Park & Yeong-Jun Choi, 2019. "Modeling and Control of Double-Sided LCC Compensation Topology with Semi-Bridgeless Active Rectifier for Inductive Power Transfer System," Energies, MDPI, vol. 12(20), pages 1-19, October.
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