Enhanced variable step sizes perturb and observe MPPT control to reduce energy loss in photovoltaic systems
Abdelkadir Belhadj Djilali, Elhadj Bounadja, Adil Yahdou, Habib Benbouhenni, Z. M. S. Elbarbary, İlhami Çolak, Saad F. Al‐Gahtani
Abstract
This study proposes a modified variable step-size perturb and observe (VSS-P&O) control to improve the efficiency of photovoltaic (PV) systems. Traditional VSS-P&O control often suffers from power losses due to rapid variations in solar irradiance, temperature, and resistive load. The proposed approach enhances the maximum power point tracking technique by incorporating a buck-boost converter to regulate the input and improve tracking accuracy. MATLAB simulations show that the new method significantly outperforms conventional methods, achieving a relative improvement in performance and an 80% reduction in power ripples under varying conditions. Compared to traditional algorithms, the proposed approach reduces response time and undershoots by 30%, demonstrating superior reliability and performance. These findings highlight the effectiveness of the proposed method in addressing power loss issues and improving the overall performance of PV systems, making it a promising solution for future applications.