Stator Feedforward Voltage Estimation Based Sensorless Permanent Magnet Synchronous Generator Drive using Multi-Parameter Estimation Based on MRAS

Öz

A simple and efficient position sensorless control method based on feedforward voltage estimation for PMSG improved with multi-parameter estimation using MRAS is proposed in this paper. The dynamically enhanced stator feedforward dq‒axes voltages that are derived from steady-state PMSG model are modified for the sensorless drive. In direct-drive wind turbine systems, because of low back-EMF amplitude in the generator output at very low speed operation, the rotor flux linkage cannot be predicted correctly. Vector control is often used in PMSG control, because it has a simple structure and is suitable for various industrial systems. In the power equation, maximum power is obtained as a function of torque and speed. In the proposed method, a variable-speed wind turbine system with back to back converter structure is connected to common DC-link. In this paper, the proposed sensorless control scheme has been implemented with 1 kW PMSG drive controlled by a TMS320F28335 DSP for low speed at 0.1 p.u. (300 rpm) is achieved under multi-parameter variations.

Anahtar Kelimeler

• Model reference adaptive system (MRAS),PMSG,Sensorless control,Feedforward voltage estimation,Multi-parameter estimation

MRAS Tabanlı Çoklu-Parametre Tahmini ile Güçlendirilmiş İleri Beslemeli Stator Gerilim Tahminine Dayanan Sensörsüz Sürekli Mıknatıslı Senkron Generatör Kontrolü

Öz

Bu makalede MRAS tabanlı çoklu-parametre tahmini ile güçlendirilmiş ileri beslemeli stator gerilim tahminine dayanan basit ve verimli bir sensörsüz sürekli mıknatıslı senkron generatör (SMSG) kontrol metodu geliştirilmiştir. Sürekli mıknatıslı senkron generatörün sürekli hal dq‒ekseni stator gerilim eşitlikleri önerilen kontrol metoduna uygun olarak ileri beslemeli stator gerilim eşitlikleri haline dönüştürülmektedir. Çeşitli endütriyel uygulamalar için uygun ve basit bir yapısı olması nedeniyle SMSG’nin kontrolünde vektör kontrol sıkça kullanılmaktadır. Güç eşitliğinde maksimum güç, moment ve hızın bir fonksiyonu olarak ifade edilir. Önerilen yöntemde, arka arkaya bağlı konvertör yapısına sahip değişken hızlı rüzgar türbini sistemi, ortak DC-baraya bağlanmıştır. Bu makalede, önerilen sensörsüz kontrol metodu TMS320F28335 DSP tarafından kontrol edilen 1 kW PMSG sürücü ile gerçek zamanlı deneysel olarak nominal hızın %10’u (300 rpm) değerindeki düşük hızda çoklu parametre değişimi altında başarı ile gerçekleştirilmiştir.

Anahtar Kelimeler

• Model referans adaptif sistem (MRAS),SMSG,Sensörsüz kontrol,İleri beslemeli gerilim tahmini,Çoklu parametre tahmini

Kaynakça

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