Değişken hızlı rüzgâr türbinleri için geri adımlamalı doğrusal olmayan bir denetleyici tasarımı

Yıl 2019, Cilt: 25 Sayı: 5, 560 - 570, 21.10.2019

Barış Bıdıklı

Öz

Değişken
hızlı rüzgâr türbinlerinin rotor hızını uygun bir şekilde denetlemek, enerji
üretimini ve güç verimliliğini eniyilemek için başvurulabilecek yöntemlerden
bir tanesidir. Bu çalışmanın temel hedefi değişken hızlı rüzgâr türbinlerinin
rotor hızı denetimini sağlayabilecek yapıda özgün bir doğrusal olmayan
dayanıklı ve uyarlamalı denetleyici tasarlamaktır. Değişken hızlı rüzgâr
türbinlerinin mekanik ve elektrik yapıları incelendiğinde geri adımlamalı
denetim tasarımı yaklaşımının bu tip sistemler için denetleyici tasarımı gerçeklemeye
oldukça uygun olduğu tespit edilmiştir. Bu durum göz önünde bulundurularak bu
çalışmada sunulan denetleyici yapısı geri adımlamalı denetim tasarımı yaklaşımı
kullanılarak tasarlanmıştır. Denetleyicinin dayanıklı yapısı sistem modeli ve
parametreleri hakkında herhangi bir bilgiye ihtiyaç duyulmaksızın denetim
hedefine ulaşmaya olanak sağlarken, uyarlamalı yapısı ise denetim esnasında
parametrik belirsizlikleri telafi edebilmektedir. Tasarlanan denetleyicinin
kuramsal çözümlemesi Lyapunov-tabanlı bir yöntemle tamamlanarak çalışmada
sunulmuştur. Elde edilen sonuçlar, tasarlanan denetleyicinin başarımının
kuramsal bir ispatı niteliğindedir. Tasarımın başarımını daha net bir şekilde
ortaya koymak için ise takip rotası olarak farklı rotor hızı senaryoları
kullanılan benzetimler yapılmış ve bu benzetimlerin sonuçlarına çalışmada yer
verilmiştir.

Anahtar Kelimeler

Değişken hızlı rüzgâr türbinleri, Doğrusal olmayan denetim, Dayanıklı uyarlamalı denetim, Geri adımlamalı denetim

A backstepping nonlinear control design for variable speed wind turbines

Öz

Controlling
the rotor speed of variable speed wind turbines properly is one of the most
appropriate methods to optimize the energy production and power efficiency of
these type of energy production systems. Designing a novel nonlinear robust
adaptive controller that is able to provide the rotor speed control of variable
speed wind turbines is the main purpose of this study. It was identified that
the backstepping control design technique is a feasible way to design a
controller for variable speed wind turbines when their mechanical and
electrical subsystems are considered. The control design presented in this
study is designed via backstepping control design approach by considering this
issue. Robust structure of the designed controller provides that it reaches
control purpose without using any information about system model and its
parameters while it adaptive structure compensates the parametric uncertainties
during the control process. Lyapunov-based arguments are used to complete the
theoretical analysis of the designed controller. Results of this analysis
theoretically prove that the designed controller is able to reach the control
purpose. Additionally, performance of the designed controller is demonstrated
via numerical simulation results that are realized by considering different desired
rotor speed scenarios.

Anahtar Kelimeler

Variable speed wind turbines, Nonlinear control, Robust adaptive control, Backstepping control

Kaynakça

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