A boot-strap estimator for joint flux and parameters online identification for vector controlled induction motor drives

• Main Author: Leite, V.
• Publication Date: 2003
• Other Authors: Araújo, Rui Esteves, Freitas, Diamantino Silva
• Language: eng
• Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
• Download full: http://hdl.handle.net/10198/2215
• topic: Induction motors; Estimation techniques; Variable speed drives; Adaptive control

This paper presents a new approach for joint rotor flux and electrical parameters on-line identification in vector controlled high-performance induction motor drives based on a boot-strap estimator that uses a reduced order extended Kalman filter for rotor flux components and rotor parameters estimation and a recursive prediction error method for stator parameters estimation. Within the prediction error method some approaches are used and compared that affect both the adaptation gain and the direction in which the updates of stator parameters are made. The induction motor model structures are described in the rotor reference frame in order to reduce the computational effort by using a higher sampling time interval.