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

Minghao Zhou, Siwei Cheng, Long Xu, Likun Wang, Qingbo Guo, William Cai and Ruoli Tang

Complexity, 2021, vol. 2021, 1-12

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.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:hin:complx:6697792

DOI: 10.1155/2021/6697792

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