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Differentiator-Based Output Feedback MPPT Controller for DFIG Wind Energy Conversion Systems with Minimal System Information

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  • Jang-Hyun Park

    (Department of Electrical and Control Engineering, Mokpo National University, Chonnam 58554, Republic of Korea)

Abstract

This paper introduces a novel differentiator-based maximum power point tracking (MPPT) controller for a wind energy conversion system (WECS) equipped with a doubly fed induction generator (DFIG). Building upon our previous algorithms, the proposed controller reduces the need for detailed system information and displays enhanced robustness against parameter variations and disturbances. The innovation lies in the elimination of the need for explicit functional forms or specific parameter values in the system’s dynamics, relying solely on relative degrees and control directions. Utilizing a higher-order switching differentiator (HOSD), this paper outlines a method for overestimating the time derivatives of system outputs, thereby simplifying both the controller design and stability analysis. Compared to existing solutions, the proposed method requires minimal information, offers simpler control law structures, and follows a systematic design approach with fewer design constants. Simulation results demonstrate the efficacy of the proposed controller in both tracking maximum power and regulating reactive power to zero, suggesting a more efficient and simplified approach to MPPT control in WECS.

Suggested Citation

  • Jang-Hyun Park, 2023. "Differentiator-Based Output Feedback MPPT Controller for DFIG Wind Energy Conversion Systems with Minimal System Information," Energies, MDPI, vol. 16(20), pages 1-18, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:20:p:7068-:d:1258730
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    References listed on IDEAS

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    1. Jang-Hyun Park & Tae-Sik Park & Seong-Hwan Kim, 2019. "Approximation-Free Output-Feedback Non-Backstepping Controller for Uncertain SISO Nonautonomous Nonlinear Pure-Feedback Systems," Mathematics, MDPI, vol. 7(5), pages 1-11, May.
    2. Jang-Hyun Park & Tae-Sik Park & Seong-Hwan Kim, 2020. "Asymptotically Convergent Higher-Order Switching Differentiator," Mathematics, MDPI, vol. 8(2), pages 1-17, February.
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