Teduhan memberikan kesan yang besar dalam kecekapan panel photovoltaic. Dalam projek ini, teduhan telah dibahagikan dengan dua jenis, seragam dan tidak seragam. Teduhan seragam dicipta dengan menggunakan kertas minyak di mana semua kawasan panel solar terkena teduhan. Bukan seragam teduhan dicipta dengan menggunakan daun dan pokok-pokok di mana separa kawasan panel solar terkena teduhan. Prestasi panel solar akan dianalisis menggunakan sensor pengukur. Prestasi panel solar dianalisis berdasarkan dua syarat utama. Teduhan seragam pertama dengan siri dan sambungan selari panel solar. Kedua, teduhan tidak seragam dengan siri dan sambungan selari panel solar. Pertama, ujian panel solar dijalankan dengan teduhan seragam dengan sambungan siri untuk memerhatikan ciri I-V. Kemudian, perubahan sambungan selari dan ciri I-V diperhatikan. Kedua, kaedah yang sama telah digunakan untuk teduhan tidak seragam. Berdasarkan keputusan yang diperolehi, menunjukkan bahawa mempunyai 10 hingga 11% daripada teduhan akan mengurangkan prestasi panel solar. Peningkatan peratusan teduhan akan mengurangkan prestasi panel solar. Dalam praktikal, kesan ke atas teduhan seragam seperti debu tidak akan memberi kesan yang besar seperti kertas mentega.
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Shading gives a great effect in the power output of the Photovoltaic panel. Shading can be divided into two type, uniform and non-uniformly distributed. Uniform shading created by using butter paper where all the area of solar panel cover by shading. Non-uniform shading created by using leaves and trees where the partial area of solar panel cover by shading. The performance of solar panel will be analyzed using measuring sensors. The performance of solar panel is being analyzed based on two main conditions. First uniform shading with series and parallel connection of solar panel. Second, non-uniform shading with series and parallel connection of solar panel. Firstly, solar panel testing is conducted with uniform shading with a series connection to observe I-V characteristic. Then, the connection change to parallel and the I-V characteristic was observed. Secondly, the same method which has been used for non-uniform shading. A number of performance parameters have been collected using Arduino Mega over 5 hours per a day for each condition. Based on results obtained, it shows that having 10 to 11% of shading will decrease the performance of the solar panel. The increasing percentage of shading will decrease the performance of the solar panel. In practical, the effect on uniform shading like dust will not give a great effect like butter paper.
The effect of partial shading on photovoltaic panel performance / Muhammad Amirul Husni Idnan