Title :
A study on the speed estimation methods of induction motor drives in the field weakening region
Author :
Kim, Suk-Kyum ; Hyun, Dong-seok ; Shin, Myoung-Ho
Author_Institution :
Dept. of Electr. Eng., Han Yang Univ., Seoul, South Korea
Abstract :
It is important to estimate the exact rotor speed for field weakening operation in the speed sensorless stator flux oriented (SFO) induction motor drive. Several methods have been reported to estimate exactly the speed in the speed sensorless system. In this paper, we apply two observer-based methods, the Luenberger observer (LO) and the Kalman filter (KF) to SFO induction motor drive in order to achieve a speed sensorless operation in field weakening region. Two control methods are reviewed and discussed. The operation characteristics of these methods in the field weakening region is compared by simulation and experiment.
Keywords :
Kalman filters; induction motor drives; rotors; stators; Kalman filter; Luenberger observer; field weakening; induction motor drives; observer-based methods; rotor speed; speed estimation; stator flux oriented; Equations; Estimation error; Induction motor drives; Observers; Rotors; Sampling methods; Sensorless control; Stators; Torque; Traction motors;
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
DOI :
10.1109/IECON.2004.1433333
