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Passive Super-Twisting Second-Order Sliding Mode Control Strategy for Input Stage of MMC-PET

Author

Listed:
  • Jingtao Zhou

    (College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

  • Jianping Zhou

    (College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

  • Hao Yang

    (College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

  • Liegang Huang

    (College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

Abstract

When the operating state of the power system changes, a modular multilevel converter power electronic transformer (MMC-PET) based on modular multilevel converters cannot perform efficient energy transfer and power conversion under conventional control strategies. To address the above problems, this paper proposes a passive, second-order super-helical sliding mode control strategy for MMC-PET by combining passive control and second-order super-helical sliding mode control with a stronger anti-interference capability. First, a Euler–Lagrange model based on positive and negative sequence separation is established according to the mathematical model of the MMC; second, the model of the system is passively analyzed, and a passive controller is designed according to its passivity, and the passive controller is further optimized by using the super-helical second-order sliding mode control, which improves the overall robustness and interference immunity; finally, the effectiveness and superiority of the super-twisting second-order sliding mode passive control strategy is demonstrated by verifying it through the construction of the MMC-PET simulation model and testing it under various non-ideal working conditions.

Suggested Citation

  • Jingtao Zhou & Jianping Zhou & Hao Yang & Liegang Huang, 2024. "Passive Super-Twisting Second-Order Sliding Mode Control Strategy for Input Stage of MMC-PET," Energies, MDPI, vol. 17(9), pages 1-20, April.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:9:p:2036-:d:1382717
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