Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

Yazarlar: Remzi INAN

Konular:Mühendislik, Elektrik ve Elektronik

DOI:10.28948/ngumuh.515332

Anahtar Kelimeler:IM,Field-weakening region,ROEKF,SMC

Özet:    In this paper, a new reduced order extended Kalman filter (ROEKF)- based estimator is proposed for the estimations of αβ- stator stationary axis components of rotor flux ( ve ), rotor mechanical angular velocity (), load torque (), magnetizing inductance (), and rotor resistance () which is used in speed-sensorless sliding mode controller (SMC)-based direct vector control (DVC) of induction motors (IMs). The estimation performance of the proposed ROEKF estimator and the control performance of the drive system are also tested in simulation by using this estimator in the speed-sensorles SMC-based DVC. In the simulation test on the estimation and control performance of whole drive system, the IM is operated from zero speed to rated speed () and above the  which is known as field weakening region in the literature, and state/parameter changes are made at all operation region. Under these coercive changes of the states and parameters, the simulation results show that the proposed ROEKF estimator and SMC-based DVC of IM have high estimation and control performance in a wide speed range including zero speed to field weakening region. In this way, it is shown that the ROEKF-based new estimator which is proposed for the first time in this study, allows the speed-sensorless drive system of IM to exhibit a more robust structure against the state and parameter changes.

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