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<p>Photovoltaic (PV) Systems that connect to the electrical grid are now a primary vector for transitioning from conventional to renewable energy by integrating scalable and clean electricity into the existing electrical grid infrastructure. However, intermittent generation of PV electricity combined with the effects of the environment, including weather, and the connection of power electronics, can introduce power quality problems such as voltage fluctuation and harmonic distortion at the point of common coupling (PCC). This study provides a comparison of Power Quality (PQ) improvement via Total Harmonic Distortion (THD) analysis in a conventional (AC) 0.3&#xa0;MW Grid Connected PV System with Incremental Conductance (IC) Maximum Power Point Tracking (MPPT) Techniques under moderate to high insolation and temperature conditions, simulated within the PSCAD software environment. The IC simulations at 500&#xa0;W/m<sup>2</sup>, 25&#xa0;°C and 1000&#xa0;W/m<sup>2</sup>, 35.5&#xa0;°C produced stable PV Voltage and Current profiles, produced balanced three-phase Inverter output, and produced voltage THD values that were below IEEE 519 and CEA limits consistently &lt; 2.18%. For all test scenarios, the IC had lower than average and more stable voltage THD Levels while there were no clear monotonic trends for Current THD Values. The data supports the conclusion that IC will have the most significant impact on Voltage Quality, especially in high Insulation conditions.</p>

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Comparative Analysis and Mitigation of Total Harmonic Distortion (THD) with Incremental Conductance MPPT Technique in 0.3 MW Grid-Connected Solar Photo Voltaic System Under Moderate and High Insolation and Temperature Conditions in PSCAD Software

  • 期刊论文

  • 发表日期：

    2026年8月1日

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  • Akshay Narendra Deshmukh,
  • Vinod K. Chandrakar

摘要

Photovoltaic (PV) Systems that connect to the electrical grid are now a primary vector for transitioning from conventional to renewable energy by integrating scalable and clean electricity into the existing electrical grid infrastructure. However, intermittent generation of PV electricity combined with the effects of the environment, including weather, and the connection of power electronics, can introduce power quality problems such as voltage fluctuation and harmonic distortion at the point of common coupling (PCC). This study provides a comparison of Power Quality (PQ) improvement via Total Harmonic Distortion (THD) analysis in a conventional (AC) 0.3 MW Grid Connected PV System with Incremental Conductance (IC) Maximum Power Point Tracking (MPPT) Techniques under moderate to high insolation and temperature conditions, simulated within the PSCAD software environment. The IC simulations at 500 W/m2, 25 °C and 1000 W/m2, 35.5 °C produced stable PV Voltage and Current profiles, produced balanced three-phase Inverter output, and produced voltage THD values that were below IEEE 519 and CEA limits consistently < 2.18%. For all test scenarios, the IC had lower than average and more stable voltage THD Levels while there were no clear monotonic trends for Current THD Values. The data supports the conclusion that IC will have the most significant impact on Voltage Quality, especially in high Insulation conditions.