Improvement and Analysis of Phase-Phase Failure of Double Feed Induction Generator Using Maximum Power Monitoring Method

Year 2022, , 1524 - 1542, 31.07.2022

Mustafa Dursun

https://doi.org/10.29130/dubited.1052660

Abstract

This study presents an analysis and control method for the doubly fed induction generator (DFIG) based wind energy production under the conditions of sudden grid voltage dips. The control aims are as follows: limiting the rotor currents, suppressing the fluctuations in the torque and suppressing the dc-link voltage fluctuation via the converter controls and ensuring maximum power point tracking. Rotor side converter (RSC) and grid side converter (GSC) structures have been given in the article and their limitations have been specified. Maximum power tracking control block has also been included in the system and its structure has been given. In this study; while RSC is controlled in a way that it will suppress the fluctuations in the torque and rotor currents, GSC is controlled in a way that it will suppress the fluctuations in dc-link voltage while taking the rotor power impact into consideration. Crowbar unit has been used in the rotor side to minimize these impacts. This unit is activated at the moment when a grid dip occurs and deactivates the RSC side. In this way, RSC side will not be affected by the high current fluctuations. The detailed results of the study were carried out in the MATLAB/Simulink environment,
and the effectiveness of the proposed method was supported by the graphic results.

Keywords

DFIG, Voltage dips, Rotor side converter (RSC), Grid side converter (GSC), MATLAB/Simulink.

Maksimum Güç İzleme Yöntemi Kullanılan Çift Beslemeli Asenkron Generatörün Faz-Faz Arızasının İyileştirilmesi ve Analizi

Abstract

Bu çalışma, ani şebeke gerilim düşüşleri koşullarında çift beslemeli endüksiyon generatörü (ÇBAG) tabanlı rüzgar enerjisi üretimi için bir analiz ve kontrol yöntemi sunmaktadır. Kontrol amaçları şunlardır: Rotor akımlarının sınırlandırılması, torktaki dalgalanmaların bastırılması ve konvertör kontrolleri aracılığıyla dc-link voltaj dalgalanmasının bastırılması ve maksimum güç noktası takibinin sağlanması. Makalede rotor tarafı dönüştürücü (RTD) ve şebeke tarafı dönüştürücü (ŞTD) yapıları verilmiş ve sınırlamaları belirtilmiştir. Maksimum güç takip kontrol bloğu da sisteme dahil edilmiş ve yapısı verilmiştir. Bu çalışmada; RTD, tork ve rotor akımlarındaki dalgalanmaları bastıracak şekilde kontrol edilirken, ŞTD, rotor güç etkisi dikkate alınarak dc-bara gerilimindeki dalgalanmaları bastıracak şekilde kontrol edilir. Bu etkileri en aza indirmek için rotor tarafında crowbar ünitesi kullanılmıştır. Bu ünite, şebeke geriliminde bir düşüş meydana geldiği anda etkinleştirilir ve RTD tarafını devre dışı bırakır. Bu sayede RTD tarafı yüksek akım dalgalanmalarından etkilenmeyecektir. Çalışmanı detaylı sonuçları MATLAB/Simulink ortamında gerçekleştirilerek, önerilen metodun etkinliği grafik sonuçları ile desteklenmiştir.

Keywords

ÇBAG, Gerilim düşümü, Rotor tarafı dönüştürücü (RTD), Şebeke tarafı dönüştürücü (ŞTD), MATLAB/Simulink.

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