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Improved voltage scanning algorithm based MPPT algorithm for PV systems under partial shading conduction.

Resat Celikel1, Musa Yilmaz2,3, Ahmet Gundogdu2

  • 1Firat University, Technology Faculty, Department of Mechatronics, Elazig, Turkey.

Heliyon
|December 6, 2024
PubMed
Summary

This study introduces a novel voltage skipping algorithm to enhance Maximum Power Point Tracking (MPPT) in photovoltaic systems under partial shading. The new method significantly improves tracking speed and efficiency compared to existing algorithms.

Keywords:
Maximum power point tracking (MPPT)Partial shading conditionsSimulation studiesVoltage scanning algorithmVoltage skipping algorithm

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Area of Science:

  • Electrical Engineering
  • Renewable Energy Systems
  • Power Electronics

Background:

  • Photovoltaic (PV) systems require efficient Maximum Power Point Tracking (MPPT) algorithms for optimal energy harvesting.
  • Traditional MPPT methods struggle with performance degradation under partial shading conditions.
  • Voltage scanning-based MPPT offers improved performance but can be further optimized for speed.

Purpose of the Study:

  • To introduce and evaluate a novel voltage skipping algorithm for enhanced MPPT speed.
  • To improve the tracking speed and efficiency of MPPT algorithms under partial shading conditions.
  • To dynamically calculate skipping voltages without prior PV panel characteristic knowledge.

Main Methods:

  • Development of a novel voltage skipping algorithm integrated into a voltage scanning MPPT framework.
  • Implementation and simulation of a PV system model (4 series panels, boost converter) in MATLAB/Simulink.
  • Comparative performance analysis against Particle Swarm Optimization (PSO), Cuckoo Search Algorithm (CSA), and Grey Wolf Optimization (GWO).

Main Results:

  • The proposed voltage skipping algorithm demonstrated high tracking efficiencies ranging from 99.13% to 99.61% across five partial shading scenarios.
  • Achieved significantly faster tracking speeds, varying from 0.2s to 0.26s, outperforming established optimization algorithms.
  • Validated effectiveness through simulations under diverse partial shading conditions.

Conclusions:

  • The novel voltage skipping algorithm offers a significant advancement in MPPT for PV systems under partial shading.
  • The proposed method provides superior tracking speed and high efficiency, making it a promising solution for PV energy optimization.
  • Dynamic voltage skipping eliminates the need for pre-defined PV panel data, enhancing adaptability.