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This research performs harmonic examination of a PV system when attached to grid power that distributes non-linear loads through various control instruments. Three control techniques are used which include conventional PI regulator together with proportional resonant controller (PR) and Fuzzy Logic regulator. The analyzed system refers to a photovoltaic model integrated with grounded in a DC-DC converter followed by an MPPT device based on Perturb and Observe algorithm connected to an electrical grid supplying a DC-AC inverter which controls a nonlinear load through Pulse Width Modulation (PWM). The study concludes with a comparative analysis of Total Harmonic Distortion (THD) levels across the three control techniques. Simulation outcomes obtained with Matlab/Simulink toolset validate the robustness of this regulation loop based on the Fuzzy Logic Controller which guarantees more effective energy transmission to the grid with fewer harmonic disturbances especially when using a non-linear load.

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Impact Study of Harmonic Analysis of a Grid-Connected Photovoltaic System Feeding Nonlinear Load

  • 会议论文

  • 发表日期：

    2025年

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  • Soukaina Essaghir,
  • Tajeddine Khalili,
  • Mustapha Oulcaid

摘要

This research performs harmonic examination of a PV system when attached to grid power that distributes non-linear loads through various control instruments. Three control techniques are used which include conventional PI regulator together with proportional resonant controller (PR) and Fuzzy Logic regulator. The analyzed system refers to a photovoltaic model integrated with grounded in a DC-DC converter followed by an MPPT device based on Perturb and Observe algorithm connected to an electrical grid supplying a DC-AC inverter which controls a nonlinear load through Pulse Width Modulation (PWM). The study concludes with a comparative analysis of Total Harmonic Distortion (THD) levels across the three control techniques. Simulation outcomes obtained with Matlab/Simulink toolset validate the robustness of this regulation loop based on the Fuzzy Logic Controller which guarantees more effective energy transmission to the grid with fewer harmonic disturbances especially when using a non-linear load.