فهرست نشریات علمی دسترسی آزاد ایران

Partial shading remains a challenge in photovoltaic (PV) systems, often leading to significant power losses and reduced module efficiency. To address this issue, manufacturers have developed various PV module designs, such as Full Cell, Half-Cut, and Shingle modules, each with distinct internal circuit configurations that influence shading tolerance. This work presents the background study and findings on these PV modules operating under different shading patterns and percentages. The experiment utilized a portable PV power meter (SEAWARD PV200) capable of storing the electrical parameters of the current-voltage (I-V) and power-voltage (P-V) curves. The experiments were conducted in Kota Kinabalu, Sabah, which features a tropical climate (elevated temperatures, high humidity levels, and a consistent amount of solar radiation throughout the year) that is ideal for solar energy production. Evaluation of the performance of the PV modules was carried out based on the I-V and P-V curves. The results indicate that the Full Cell PV module exhibited the highest maximum power (Pmax) reduction under horizontal and diagonal shading patterns (25%, 50%, and 75% shading). The Half-Cut PV module demonstrated better performance under horizontal shading patterns (25% and 50%) but experienced the highest Pmax reduction under vertical and diagonal shading patterns (50% and 75% shading). The Shingle PV module exhibited the highest Pmax reduction under vertical and diagonal shading patterns (25%, 50%, and 75% shading) but showed minimal reduction under horizontal shading patterns (25% and 50% shading).