Improving Switching Efficiency with a Step-Up/Step-Down Hybrid Buck-Boost Converter using fuzzy logic control

Authors

  • Amgad Naji Ali Ahmed Obuda University
  • Edit Laufer Óbuda University, Bánki Donát Faculty of Mechanical and Safety Engineering, Budapest
  • Judit Lukács Óbuda University, Bánki Donát Faculty of Mechanical and Safety Engineering, Budapest
  • György Györök Óbuda University, Alba Regia Faculty

Keywords:

fuzzy logic, PV, CONVERTERS, STEP-UP AND DOWN SWITCHING, efficiency

Abstract

This paper presents an investigation into hybrid buck-boost DC to DC converter topologies and their control strategies, focusing on enhancing switching efficiency through the use of dual circuits with different switching capacities. PV solar system DC to DC converters are essential in power electronics for converting various temperature power DC to DC power in various applications, including electric vehicles, renewable energy systems, and consumer electronics with the fuzzy logic control. The buck-boost topology is particularly advantageous for DC to DC conversion due to its capability to regulate output voltage across a wide range of input voltages. The proposed hybrid buck-boost converter leverages the benefits of both buck and boost configurations, resulting in improved efficiency, reduced size, and increased reliability. This innovative converter design features a series-connected buck and boost converter, connected through a common DC link capacitor, allowing for precise output voltage control by adjusting the duty cycles by the signals that coming from rules inside the fuzzy logic control with the input of PV system of the switches. The implementation of two circuits with different switching capacities further optimizes switching efficiency and enhances the overall performance of the converter system.

References

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Published

2025-08-12

Issue

Vol. 7 No. 2 (2025): Bánki Reports Spring (2025)

Section

Intelligent Mechatronic Systems

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