FIELD ORIENTED ADAPTIVE CONTROLLER USING EKF FOR ASYNCHRONOUS DRIVES
Titel:
FIELD ORIENTED ADAPTIVE CONTROLLER USING EKF FOR ASYNCHRONOUS DRIVES
Auteur:
Carrara, G. Casini, D. Groppi, S. Taponecco, L.
Verschenen in:
Electric power components & systems
Paginering:
Jaargang 25 (1997) nr. 5 pagina's 539-551
Jaar:
1997
Inhoud:
This paper presents a high dynamic induction motor drive system utilizing a fully digital direct field oriented controller. The drive is characterized by a sliding mode controller and by a stochastic filtering technique, the latter obtained by an extended Kalman filter (EKF), in the feedback loop. The EKF, in addition to supplying a reliable estimation of state variables, is able to identify and to correct in real-time the values of rotor resistance and of rotor constant time, in effect, becoming an adaptive state observer. The system can work both with or without a speed sensor. Some computer simulations are reported.