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The goal of the proposed paper is to develop a grid-connected photovoltaic (PV) system using MATLAB/Simulink. The proposed system incorporates an adaptive transfer delay-based phase-locked loop (ATD-PLL), solar PV panels, and a nonlinear load. The ATD-PLL control scheme is utilized to discover the essential load current element of the nonlinear load current, both during fluctuating and stable state circumstances. The ATD-PLL control, in combination with a voltage source converter (VSC), serves two primary purposes: harmonics mitigation and power compensation within the proposed system. By actively regulating the power output and mitigating harmonics, the system aims to maintain the grid-tied system's total harmonic distortion (THD) within an allowable range of less than 5%. This adherence to the IEEE-519 standard ensures that the system operates within acceptable limits and minimizes the impact on the grid. Moreover, a comparison performance is carried out with the conventional control algorithms. The proposed system is designed in MATLAB/Simulink and results are analyzed under changes in solar irradiance and nonlinear unbalanced load.

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Harmonics Mitigation and Control of Grid-Connected PV System Under Intermittent Conditions

  • 会议论文

  • 发表日期：

    2025年

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  • Shubham Sharma,
  • Sombir Kundu,
  • Sukhbir Singh,
  • Jitender Singh,
  • Surender Singh

摘要

The goal of the proposed paper is to develop a grid-connected photovoltaic (PV) system using MATLAB/Simulink. The proposed system incorporates an adaptive transfer delay-based phase-locked loop (ATD-PLL), solar PV panels, and a nonlinear load. The ATD-PLL control scheme is utilized to discover the essential load current element of the nonlinear load current, both during fluctuating and stable state circumstances. The ATD-PLL control, in combination with a voltage source converter (VSC), serves two primary purposes: harmonics mitigation and power compensation within the proposed system. By actively regulating the power output and mitigating harmonics, the system aims to maintain the grid-tied system's total harmonic distortion (THD) within an allowable range of less than 5%. This adherence to the IEEE-519 standard ensures that the system operates within acceptable limits and minimizes the impact on the grid. Moreover, a comparison performance is carried out with the conventional control algorithms. The proposed system is designed in MATLAB/Simulink and results are analyzed under changes in solar irradiance and nonlinear unbalanced load.