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Robust Switching Gain-Based Fractional-Order Sliding Mode Control for Wind-Powered Microgrids

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Listed:
  • Minghao Zhou
  • Siwei Cheng
  • Long Xu
  • Likun Wang
  • Qingbo Guo
  • William Cai
  • Ruoli Tang

Abstract

This study proposes a novel fractional-order sliding-mode control strategy with robust switching gain to achieve reliable and high quality of wind-powered microgrid systems. Three fractional-order sliding mode controllers are designed to generate continuous control signals and regulate the outer DC-link voltage loop and inner current loop in the grid-side inverters. High robustness and stability of the grid-side inverter can be guaranteed even in the presence of parameter variations and external disturbances. Owing to the fractional-order sliding manifold and fractional-order integral control law, the chattering is attenuated. The fractional-order robust adaptive switching gain is designed to avoid overestimating the upper bound of matched/unmatched uncertainties, save the control energy, and guarantee the rapidity and robustness of the convergence. Simulations validate the proposed method.

Suggested Citation

  • Minghao Zhou & Siwei Cheng & Long Xu & Likun Wang & Qingbo Guo & William Cai & Ruoli Tang, 2021. "Robust Switching Gain-Based Fractional-Order Sliding Mode Control for Wind-Powered Microgrids," Complexity, Hindawi, vol. 2021, pages 1-12, March.
    • Handle: RePEc:hin:complx:6697792
    DOI: 10.1155/2021/6697792
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