Studying the Shading Effect of PV System on Energy Performances in Restricted Spaces   Sameer H. Khader, Abdel-Karim K. Daud and Akram A. Abu-aisheh   2024/07/20

Abstract

Shading has a considerable influence on solar cells’ characteristics, temperature, and irradiation. Shading can be represented as partial or total shading over a few cells, panels, or even a set of modules. This study investigates the effect of shading rate on the PV panel's performance when used with modifies SEPIC converter. A mathematical model is performed and simulated on the MATLAB/Simulink platform. The investigation is conducted to study the effect of barrier height, tilt angle, and altitude angle changes for one day, one month, and the whole year. The results showed that the shadow factor depends on a set of parameters and varies from one system to another. Furthermore, the most affected months are the winter months, where the shadowing exceeds 28%, while in the summer months it falls to 10% at the highest barrier. The annual loss of energy is studied with and without obstacles, where results indicate that the loss of energy varies between 30% and 1% as the spacing from the closest PV row increases from 0.5m to 10m. This fact motivates designers to allow a certain rate of shadowing, especially in restricted and narrow spaces, keeping in mind that lost energy is negligible. Also, the energy gained is far greater than that when shading is completely eliminated by keeping enough spaces.

Authors and affiliations

Sameer H. Khader(1), Abdel-Karim K. Daud(1) and Akram A. Abu-aisheh(2)

1.Department of Electrical Engineering. Palestine Polytechnic University, Hebron, PALESTINE

2. Department of Electrical and Computer Engineering. University of Hartford, West Hartford, CT, USA

Key words

Modified SEPIC Converter, Photovoltaic Source, PWM, MPPT, and Inverters.

References