A COMPREHENSIVE OVERVIEW OF SOFT COMPUTING BASED MPPT TECHNIQUES FOR PARTIAL SHADING CONDITIONS IN PV SYSTEMS

Öz

Nowadays, solar or photovoltaic energy is the most commonly used renewable energy resources in the world. Despite its advantages such as freely available, low maintenance cost, pollution-free, inexhaustible, and reliable, its low conversion efficiency is a major drawback. To increase the efficiency of the photovoltaic system, all photovoltaic modules in the array must be operated at maximum power point. Therefore, maximum power point tracking technique is used for predicting and tracking the maximum power point. In the literature, maximum power point tracking techniques are generally classified as soft computing and conventional. Soft computing techniques are more preferred from both of them, because they can accurately track maximum power point of photovoltaic systems. In this study, an extensive review of soft computing based maximum power point tracking techniques under partial shading conditions until today is presented. The techniques are compared from the point of photovoltaic array dependency, sensors required, tracking efficiency, tracking speed, algorithm complexity, and oscillation around maximum power point.

Anahtar Kelimeler

• Photovoltaic System,Maximum Power Point Tracking,Soft Computing Technique

PV SİSTEMLERDE KISMİ GÖLGELENME KOŞULLARINDA ESNEK HESAPLAMA TABANLI MAKSİMUM GÜÇ NOKTASI İZLEME TEKNİKLERİNİN KARŞILAŞTIRILMASI

Öz

Günümüzde güneş ya da fotovoltaik enerji yenilenebilir enerji kaynakları arasında yaygın olarak kullanılmaktadır. Güneş enerjisi, maliyetsiz, atmosfer dostu,  işletme ve bakım maliyetinin az olması ve evrensel olarak her yerde bulunması gibi avantajlarına rağmen, düşük enerji verimliliği en büyük dezavantajıdır. Fotovoltaik sistemlerin verimliliğini arttırabilmek için fotovoltaik dizideki modüller maksimum güç noktalarında çalıştırılmalıdır. Bu nedenle, maksimum güç noktasını tahmin etmek ve izlemek için maksimum güç noktası izleme teknikleri kullanılır. Literatürde, maksimum güç noktası izleme teknikleri genellikle esnek hesaplama ve klasik teknikler olmak üzere sınıflandırılır. Ancak, maksimum güç noktasını doğru bir şekilde takip edebildikleri için esnek hesaplama teknikleri tercih edilmektedir. Bu çalışmada, geçmişten günümüze kadar kısmi gölgeleme koşullarında esnek hesaplama tabanlı maksimum güç noktası izleme tekniklerinin kapsamlı bir derlemesi sunulmuştur. Teknikler, fotovoltaik dizi bağımlılığı, gereken sensörler, takip verimliliği, takip hızı, algoritma karmaşıklığı ve maksimum güç noktası etrafında salınım durumları açısından karşılaştırılmıştır. 

Anahtar Kelimeler

• Fotovoltaik Sistem,Maksimum Güç Noktası Takibi,Esnek Hesaplama Teknikleri

Kaynakça

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