Performance Comparison of Phase Locked Loop Methods for Grid Interactive Inverters

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Date

2019

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Konya Technical University

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GOLD

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Abstract

In grid interactive power converter applications, phase locked loop (PLL) methods are very important to realize grid synchronization. The performance of PLL which is used should be affected by adverse conditions such as voltage unbalance, harmonics, frequency and phase changes. Furthermore, in these adverse conditions, the phase angle of grid voltages and positive sequence component of grid voltages in fundamental grid frequency are needed to determine quickly and accurately. Otherwise, synchronization errors occur between the grid interactive inverter and the grid.In this paper, different PLL methods are simulated under MATLAB/Simulink. The performances of the PLL methods are comparatively presented under three different conditions such as unbalanced, harmonics and variable frequency grid. It has also put forward the positive and negative aspects of the PLL methods based on the obtained results.
Şebeke etkileşimli güç dönüştürücü uygulamalarında, şebeke senkronizasyonunun gerçekleştirilebilmesi için faz kilitleme döngüsü (PLL) yöntemleri oldukça önemlidir. Kullanılan PLL’nin performansı; gerilim dengesizliği, harmonikler, frekans ve faz değişimi vb. olumsuz durumlardan etkilenmemelidir. Üstelik bu olumsuz durumlarda, şebeke faz açısının ve temel şebeke frekansındaki pozitif sıralı bileşen geriliminin hızlı ve doğru bir şekilde belirlenmesi gerekir. Aksi durumda, şebeke etkileşimli dönüştürücü ile şebeke arasında senkronizasyon hataları meydana gelmektedir.Bu makalede, farklı PLL yöntemlerinin MATLAB/Simulink’te benzetimi yapılmıştır. Dengesiz, harmonikli ve değişken frekanslı şebeke durumu gibi üç farklı şebeke koşulu altında PLL yöntemlerinin performansları karşılaştırmalı olarak sunulmuştur. Ayrıca, elde edilen sonuçlara dayanarak PLL yöntemlerinin artı ve eksi yönleri ortaya konulmuştur.

Description

DergiPark: 654874
konjes

Keywords

Inverter, Phase Locked Loop (PLL), Synchronization, Evirici, Faz Kilitleme Döngüsü(PLL), Senkronizasyon

Turkish CoHE Thesis Center URL

Fields of Science

0211 other engineering and technologies, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology

Citation

WoS Q

Q4

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Source

Konya Mühendislik Bilimleri Dergisi

Volume

7

Issue

4

Start Page

713

End Page

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