DC-DC Konvertörler ile Bir Fotovoltaik Dizinin Elektriksel Karakteristiklerinin Elde Edilmesi

Year 2022, , 35 - 41, 28.06.2022

Koray Parlak

https://doi.org/10.46460/ijiea.1034743

Abstract

Günlük hayatta Fotovoltaik modüllerin kullanımının artmasıyla, bu modüllerin performans parametrelerinin bilinmesi, kullanım, tasarım ve verimlilik çalışmaları açısından önemli hale gelmiştir. DC-DC konvertörler hemen hemen fotovoltaik sistemlerin çoğunda kullanılan güç elektroniği devreleridir. Bu devreler aynı zamanda bir yük emülatörü olarakda kullanılabileceğinden, fotovoltaik modüllerin elektriksel karakteristik eğrilerini elde etme amaçlı da kullanma olanağı da sunmaktadır. Bu çalışmada bir fotovoltaik dizinin, farklı tip DC-DC konvertörler kullanılarak elektriksel karakteristiklerinin elde edilişi gösterilmiştir. Sistem Matlab-Simulink ortamında benzetimi yapılarak hem homojen ışımada hem de farklı kısmi gölge senaryolarında sonuçlar incelenmiştir. Ardından bu karakteristiklerin kullanılan konverter tipi göz önüne alınarak karşılaştırılması yapılarak maksimum güç izleyici yöntemlerinde nasıl kullanılabileceği açıklanmıştır.

Keywords

Elekretriksel karakteristikler, fotovoltaik diziler, kısmi gölge koşulları, maksimum güç noktası.

Obtaining the Electrical Characteristics of a Photovoltaic Array with DC-DC Converters

Abstract

With the increasing use of Photovoltaic modules in daily life, knowing the performance parameters of these modules has become important in terms of usage, design and efficiency studies. DC-DC converters are power electronics circuits used in almost the majority of photovoltaic systems. Since these circuits can also be used as a load emulator, they also offer the opportunity to obtain the electrical characteristic curves of photovoltaic modules. In this study, the electrical characteristics of a photovoltaic array are demonstrated using different types of DC-DC converters. The system was simulated in the Matlab-Simulink environment, and the results were examined both in uniform irradiation and in different partial shade scenarios. Then, it is explained how these characteristics can be used in maximum power point tracker methods by comparing them by considering the converter type used.

Keywords

Electrical characteristics, maximum power point, partial shading conditions, photovoltaics.

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