AUT Journal of Electrical Engineering

AUT Journal of Electrical Engineering

Intelligent Photovoltaic Conversion System with Cascaded Fuzzy MPPT for Efficient DC Power Transfer

Document Type : Research Article

Authors
Golla Satyanarayana 1
Tappeta Amai Kiran 2
Rushan Kumar 3
Kodi Yohan 3
Mokim Ansari 3
1 Assistant Professor, Department of Electronic Engineering, Godavari Institute of Engineering Science and Technology (A), Rajahmundry
2 Associate Professor, Department of Electronic Engineering, Godavari Global University, Rajahmundry
3 UG Scholar, Department of Electronic Engineering, Godavari Institute of Engineering Science and Technology (A), Rajahmundry
10.22060/eej.2026.24324.5683
Abstract
In most areas and power systems, Photovoltaic (PV) energy is rapidly becoming a significant component of the energy balance because of its rapid annual growth rate. Therefore, this research presents the PV-fed improved SEPIC-Zeta converter with a cascaded fuzzy algorithm based Maximum Power Point Tracking (MPPT) for efficient DC power transfer. At the beginning, the improved SEPIC-Zeta (ISZ) converter is exploited to enhance the PV system’s voltage. Then, the Cascaded Fuzzy MPPT algorithm is introduced for tracking the upmost power from PV system. Also, the high frequency inverter transmutes the DC to AC power and isolation is provided by the isolation transformer for ensuring safety and mitigating harmonic distortion on the source and load side. Additionally, the interleaved synchronous rectifier is exploited for converting the AC into a DC supply. The implemented research is validated in MATLAB tool, which demonstrates that the proposed work has a converter efficacy of 95.12 %, which handle fluctuations and disturbances more effectively, enhancing the reliability of overall system.
Keywords
PV System
ISZ converter
Cascaded Fuzzy MPPT Algorithm
High Frequency Inverter
Isolation Transformer
Subjects
AUT Journal of Electrical Engineering
Volume 58, Issue 3
Summer 2026
Pages 553-570