Scholarlink

<p>This paper proposes a robust First Order Sliding Mode Control (FOSMC) combined with H-infinity (H∞) control strategy to enhance the performance of a Unified Power Quality Conditioner (UPQC) in a hybrid photovoltaic (PV) power system under real-world solar irradiation conditions in Adrar, Algeria. The proposed method addresses critical power quality challenges, including total harmonic distortion (THD), reactive power compensation, and chattering effects inherent in conventional SMC. The UPQC is designed to mitigate voltage and current distortions caused by nonlinear loads while ensuring power factor correction and system stability. A modified FOSMC-H ∞ controller is developed for the shunt active power filter (ShAPF), incorporating advanced current tracking and voltage regulation techniques to improve dynamic response and robustness. The controller’s effectiveness is validated through MATLAB/Simulink simulations, with performance comparisons against conventional PI and classical SMC methods. Key results demonstrate that the FOSMC-H ∞ controller achieves: THD reduction to 1.89%, unity power factor correction, chattering power minimization to 3&#xa0;W (compared to 15&#xa0;W for PI and 10&#xa0;W for classical SMC), reactive power fluctuation reduction to 0.25 var, overshoot-free DC-link voltage regulation. The proposed controller exhibits superior dynamic response, robustness against solar irradiation variability, and strong disturbance rejection, making it a highly effective solution for power quality enhancement in smart grids and renewable energy systems.</p>

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Robust Sliding Mode Control Based on H Infinity of Unified Power Quality Conditioner Integrated To Hybrid Power System Under Real Solar Radiation: A Case Study of Adrar, Algeria

  • 期刊论文

  • 发表日期：

    2025年10月18日

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  • Brahim Berbaoui,
  • Lakhdar Saihi,
  • Rachid Dehini

摘要

This paper proposes a robust First Order Sliding Mode Control (FOSMC) combined with H-infinity (H∞) control strategy to enhance the performance of a Unified Power Quality Conditioner (UPQC) in a hybrid photovoltaic (PV) power system under real-world solar irradiation conditions in Adrar, Algeria. The proposed method addresses critical power quality challenges, including total harmonic distortion (THD), reactive power compensation, and chattering effects inherent in conventional SMC. The UPQC is designed to mitigate voltage and current distortions caused by nonlinear loads while ensuring power factor correction and system stability. A modified FOSMC-H ∞ controller is developed for the shunt active power filter (ShAPF), incorporating advanced current tracking and voltage regulation techniques to improve dynamic response and robustness. The controller’s effectiveness is validated through MATLAB/Simulink simulations, with performance comparisons against conventional PI and classical SMC methods. Key results demonstrate that the FOSMC-H ∞ controller achieves: THD reduction to 1.89%, unity power factor correction, chattering power minimization to 3 W (compared to 15 W for PI and 10 W for classical SMC), reactive power fluctuation reduction to 0.25 var, overshoot-free DC-link voltage regulation. The proposed controller exhibits superior dynamic response, robustness against solar irradiation variability, and strong disturbance rejection, making it a highly effective solution for power quality enhancement in smart grids and renewable energy systems.