Pasif seri sönümleme direncinin LCL filtreli bir fazlı şebeke etkileşimli evirici üzerine etkisi

Year 2020, Volume: 26 Issue: 5, 927 - 934, 23.10.2020

Akif Karanfil

Abstract

Bu çalışmada, 600 W gücündeki LCL filtreli bir fazlı şebeke etkileşimli evirici devresinin analizi, tasarımı, benzetimi ve uygulaması gerçekleştirilerek devre üzerinde pasif sönümleme direncinin etkisi incelenmiştir. Aktif güç kontrolü için oransal integral (PI), akım kontrolü için oransal rezonans (PR) denetleyici ve şebeke frekans kontrolü için ise T/4 gecikmeli faz kilitlemeli döngü (PLL) algoritması kullanılmıştır. Sistemde sönümleme direnci olmadan analizler yapılarak değişik güç değerlerinde benzetim ve deneysel sonuçlar elde edilmiştir. Daha sonra evirici devresindeki LCL filtreye sönümleme direnci dâhil edilerek sonuçlar tekrar alınmıştır. Elde edilen benzetim ve deneysel sonuçlara göre sönümleme direncinin devreye dâhil edilmesi ile birlikte şebeke akımındaki osilasyonların azaldığı ve güç geçişlerinin de daha düzgün hale geldiği görülmüştür.

Keywords

Seri sönümleme direnci, LCL filtre, Aktif güç kontrolü, PR akım kontrolü, Bir fazlı şebeke etkileşimli evirici

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