Elektrikli Araç için MÖK Tabanlı Akı Zayıflatma Kontrolü ile Asenkron Motorun Kayan Modlu Hız Tahmini

Yıl 2024, Cilt: 24 Sayı: 06, 1403 - 1411

Barış Çavuş , Mustafa Aktaş

Öz

Elektrikli araçlarda kullanılan motorların nominal hızın üzerinde çalıştırılması çok önemlidir. Elektrik motorlarının çok yüksek hızda çalıştırılabilmesi için akının kontrollü bir şekilde azaltılması gerekmektedir. Bu çalışmada akışı azaltmak için Model Öngörülü Kontrol (MÖK) yaklaşımı kullanılmıştır. Akı zayıflama bölgesinde hız sensörsüz asenkron motorun performansı değerlendirilmiştir. Çalışma sonucunda hem MÖK tabanlı akı zayıflatma kontrolünün hız sensörsüz performansı incelenmiş hem de Model Referans Adaptif Sistem (MRAS) ve Kayan Kipli Gözlemcinin (KKG) nominal değerin üzerindeki hız bölgesinde performansı değerlendirildi. Benzetim çalışmasıyla elde edilen akım, hız, akı ve moment verilerine dayanarak iki hız gözlemcisi ile de MPC tabanlı akı zayıflama kontrolünün sağlanabileceği başarıyla gösterilmiştir. Ayrıca çalışma sonucunda KKG'nin daha iyi sonuçlar verdiği görülmüştür.

Anahtar Kelimeler

Model öngörülü kontrol, Akı zayıflama, Model referans adaptif sistem, Kayan kipli gözlemci, Doğrudan moment kontrolü

Sliding Mode Speed Estimation of Induction Motor with MPC Based Flux Weakening Control for Electric Vehicle

Öz

It is very important to operate the motors used in electric vehicles above the rated speed. In order to operate electric motors with very high speed, the flux must be decreased in a controlled way. The Model Predictive Control (MPC) approach was employed in this study to reduce the flow. In the flux weakening area, the induction motor's performance without a speed sensor has been evaluated. As a result of the study, both the speed sensorless performance of the MPC based flux weakening control has been examined and the performance of the Model Reference Adaptive System (MRAS) and the Sliding Mode Observer (SMO) in very high speed region over nominal value has been evaluated. It has been successfully demonstrated that MPC-based flux weakening control with two speed observers can be achieved based on the current, speed, flux, and torque data collected through the simulation study. In addition, as a result of the study, it is seen that SMO has given better results.

Anahtar Kelimeler

Model predictive control, Flux weakening, Model reference adaptive system, Sliding mode observer, Direct torque control

Kaynakça

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