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Unified power quality conditioner: Design, simulation and experimental analysis

Authors: Teke, Ahmet;

Unified power quality conditioner: Design, simulation and experimental analysis

Abstract

Güç kalitesi problemi gerilim ve/veya akımın nominal sinüs dalga formundan sapması olarak tanımlanabilir. Güç kalitesi problemleri genellikle gerilim düşümleri/yükselmeleri ve harmonikli akımlar ile ilgilidir. Güç kalitesi problemlerine çüzüm getiren özel Güç Donanımları son yıllarda büyük bir önem kazanmıstır. Birlestirilmis Güç Kalitesi Düzenleyici (BGKD) bu donanımlardan biridir ve hem akım hem de gerilim kalitesi problemlerini es zamanlı olarak azaltır. Bu çalısmada, gerilim düşümü/yükselimi ve akım harmoniklerini azaltmak amacıyla BGKD ve yeni bir BGKD topolojisi olan Acık BGKD tasarlanmıs, modellenmis ve deneysel olarak kurulmustur. BGKD, Dinamik Gerilim İyilestiricisi (DGİ) ve Aktif Güç Filtresinden (AGF) olusmaktadır. DGİ için Gelismis-Faz Kilitlemeli Döngü yöntemi tabanlı bir gerilim kompanzasyon yöntemi ve gerilim düşümü/yükselmesini tespit etmek amacıyla yeni bir hata tespit yöntemi sunulmustur. AGF kontrolcüşünde, Anlık Reaktif Güç Teorisi dengesiz ve harmonikli besleme gerilimlerinde en iyi çalısacak sekilde iyilestirilmistir. Laboratuvar testleri için Sayısal Sinyal İslemci tabanlı 6 kVA, 230Vfaz-faz BGKD ve Açık BGKD prototipleri gelistirilmistir. Amaçlanan BGKD ve Açık BGKD, kaynak geriliminde meydana gelen gerilim düşümü/yükselimini dengeler ve hassas yön gerilimini 0.9-1 birim değerde ve ayrıca harmonikli yön akımlarını yok ederek kaynak akımını (Toplam Harmonik Bozulma, THB), THB<%5değerinde eszamanlı olarak tutar. Bu deneysel çalısma Çukurova Üniversitesi Elektrik Elektronik Mühendisliği Büyük Güç Kalitesi Laboratuvarında gerçeklestirilmistir, Adana, Türkiye.

Power quality (PQ) problem can be defined as the deviations of the voltage and/or current from the nominal sine wave. PQ problems generally concern with voltage sags/swells and harmonic currents. Custom Power (CP) devices that mitigate these power quality problems have gained more attention in the recent decades. Unified Power Quality Conditioner (UPQC) is one of the CP devices and it mitigates both load current and supply voltage problems, simultaneously. In this study, UPQC and a new topology of UPQC namely OPEN UPQC are designed, modeled and setup experimentally to mitigate voltage sag/swells and harmonic currents. UPQC consists of Dynamic Voltage Restorer (DVR) and Active Power Fitler (APF). An improved voltage compensation controller and new sag/swell detection method based on Enhanced Phase Locked Loop (E-PLL) are presented for DVR. Traditional Instantaneous Reactive Power Theory (IRPT) is optimized for APF control algorithm to compensate harmonic load current under unbalanced and distorted supply voltages. Digital Signal Processor based 6 kVA, 230Vline-lineUPQC and OPEN UPQC prototypes have been developed for laboratory tests. UPQC and OPEN UPQC with proposed controller algorithms effectively compensates the sag/swell in supply voltage by keeping the load voltage amplitude at 0.9-1 per unit and eliminates the load current harmonics by keeping supply current at 5%

Bu çalışma Ç.Ü. Bilimsel Araştırma Projeleri Birimi tarafından desteklenmiştir. Proje No: MMF2009D3.

Tez (Doktora) -- Çukurova Üniversitesi, Adana, 2011.

xxi, 204 s. : res., tablo ; 29 cm.

Kaynakça (s.173-197) var.

TEZ8411

Country
Turkey
Related Organizations
Keywords

özel güç, active power filter, Unified power Quality conditioner, açık BGKD, Birlestirilmis güç kalitesi düzenleyicisi, Elektrik ve Elektronik Mühendisliği, aktif güç filtresi, Energy usage, Energy distribution, Electrical energy systems, Electrical analysis, Electric power systems, custom power, OPEN UPQC, dinamik gerilim iyilestiricisi, rynamic voltage restorer, Electrical and Electronics Engineering, Energy quality

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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