Rüzgar Enerjisi Sistemlerinde Enerji Verimliliğinin Sensörsüz Yumuşak Anahtarlama Kontrolü ile Geliştirilmesi

Year 2025, EARLY VIEW, 1 - 1

Tufan Volkan Küçük , Selim Öncü

https://doi.org/10.2339/politeknik.1586835

Abstract

Bu çalışmada, anahtarlama kayıplarını en aza indirmek ve şebekeden bağımsız, küçük ölçekli bir rüzgar enerjisi dönüşüm sisteminin (REDS) verimliliğini artırmak için bir seri rezonans dönüştürücü (SRD) ve darbe yoğunluğu modülasyonu (DYM) güç kontrol stratejileri uygulanmaktadır. Ayrıca, maliyetleri daha da düşürmek ve sistem güvenilirliğini artırmak için maksimum güç noktası izleme (MGNİ) yöntemi kullanılmıştır. Rüzgar hızı verilerine veya türbinin aerodinamik modeline ihtiyaç duymadan maksimum güç noktasında (MGN) çalışmayı sağlayan “değiştir ve gözle” (D&G) MGNİ tekniği kullanılmıştır. D&G algoritması için gerekli hız ve güç verileri, çift ikinci dereceden genelleştirilmiş integratör tabanlı frekans kilitlemeli döngü (DSOGI-FLL) algoritması kullanılarak üç fazlı generatör değişkenlerinden türetilmiştir. Powersim'de (PSIM) gerçekleştirilen simülasyonlar aracılığıyla 1,5 kW'lık bir REDS'in performansı analiz edilmiş ve sonuçlar sunulmuştur. Analiz, tasarlanan sistemin ortalama %97 MGNİ verimliliği elde ettiğini ortaya koymuştur. Ayrıca, rezonans dönüştürücünün verimliliği en düşük rüzgar hızı için %90 ve diğer rüzgar hızları için %93 olarak ölçülmüştür. Bu bulgular, önerilen sistemin genel enerji dönüşüm verimliliğinde önemli bir gelişme sağladığını ve değişen rüzgar koşullarında yaklaşık %90-93 ortalama sistem verimliliği ile küçük ölçekli WECS'lerin güvenilir ve uygun maliyetli çalışmasını sağladığını göstermektedir.

Keywords

Rüzgar enerjisi, yumuşak anahtarlama, darbe yoğunluk modülasyon (PDM), sensörsüz denetim, DSOGI-FLL

Ethical Statement

Bu makalenin yazarları, bu çalışmada kullanılan materyal ve yöntemlerin etik kurul izni ve/veya yasal-özel izin gerektirmediğini beyan eder.

Supporting Institution

TÜBİTAK

Project Number

Project Number: 123E370

Thanks

Bu araştırma TÜBİTAK Araştırma Fonu tarafından desteklenmektedir (Proje Numarası: 123E370).

Energy Efficiency Improvements in Wind Energy Systems via Sensorless Soft-Switching Control

Abstract

This study implements a series resonant converter (SRC) and pulse density modulation (PDM) power control strategies to minimize switching losses and improve the efficiency of an off-grid, small-scale wind energy conversion system (WECS). Additionally, the maximum power point tracking (MPPT) method was employed to further reduce costs and increase system reliability. The "perturb and observe" (P&O) MPPT technique was utilized, enabling operation at the maximum power point (MPP) without the need for wind speed data or an aerodynamic model of the turbine. The speed and power data required for the P&O algorithm were derived from the three-phase generator variables using the double second-order generalized integrator frequency-locked loop (DSOGI-FLL) algorithm. The performance of a 1.5 kW WECS was analyzed through simulations conducted in Powersim (PSIM), and the results are presented. The analysis revealed that the designed system achieved an average MPPT efficiency of 97%. Furthermore, the efficiency of the resonant converter was measured to be 90% for the lowest wind speed and 93% for other wind speeds. These findings demonstrate that the proposed system offers a significant improvement in overall energy conversion efficiency, ensuring reliable and cost-effective operation of small-scale WECS, with an average system efficiency of approximately 90-93% across varying wind conditions.

Keywords

Wind energy, soft switching, PDM, sensorless control, DSOGI-FLL

Ethical Statement

The authors of this article declares that the materials and methods used in this study do not require ethical committee permission and/or legal-special permission.

Supporting Institution

TÜBİTAK

Project Number

Project Number: 123E370

Thanks

This research is supported by TUBITAK Research Fund (Project Number: 123E370).

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