FOTOVOLTAİK ENERJİ SİSTEMLERİNİN MODELLENMESİ, BENZETİMİ ve UYGULAMASI

Yıl 2014, Cilt: 3 Sayı: 1, 9 - 23, 01.08.2014

Serhat Duman Nuran Yörükeren İsmail Hakkı Altaş

Öz

The photovoltaic energy systems are one of the renewable energy sources. The output power of solar energy systems are changed with respect to environmental conditions of temperature and solar irradiance. In this study, the mathematical model of solar cell has been used and the simulation studies of this model have been performed in Matlab/Simulink software. Power-Voltage (P-V), Current-Voltage (I-V) characteristics have been investigated for different number of series-parallel connected solar cell and changing environmental conditions. Also, the maximum power points have been found to use perturbation-observation algorithm, which is one of the traditional algorithms under various environmental conditions of the solar energy systems. The performance of the algorithm has been examined in different step coefficients. Application of this algorithm is carried out in a laboratory environment.

Anahtar Kelimeler

Renewable energy sources, photovoltaic systems, maximum power point, perturbation-observation algorithm.

FOTOVOLTAİK ENERJİ SİSTEMLERİNİN MODELLENMESİ, BENZETİMİ ve UYGULAMASI

Öz

Fotovoltaik enerji sistemleri önemli yenilenebilir enerji kaynaklarından biridir. Sıcaklık ve güneş ışınımı gibi çevresel koşullara bağımlı olarak güneş enerji sistemlerinin çıkış gücü değişmektedir. Bu çalışmada güneş pilinin matematiksel modeli kullanılmış ve bu modelin benzetim çalışmaları Matlab/Simulink ortamında yapılmıştır. Farklı sayıda seri-paralel bağlı güneş pili ve değişen çevresel koşullar altında GüçGerilim (P-V), Akım-Gerilim (I-V) karakteristikleri incelenmiştir. Ayrıca, güneş enerji sistemlerinin çeşitli çevresel koşullar altındaki maksimum güç noktaları geleneksel algoritmalardan biri olan değiştir-gözetle algoritması kullanılarak bulunmuştur. Farklı adım katsayılarında algoritmanın performansı incelenmiştir. Bu algoritmanın laboratuvar ortamında uygulaması gerçekleştirilmiştir.

Anahtar Kelimeler

Yenilenebilir enerji kaynakları, fotovoltaik sistemler, maksimum güç noktası, değiştir-gözetle algoritması

Kaynakça

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