Title :
Analysis of the chosen speed and flux estimators for sensorless induction motor drive
Author :
Tarchala, Grzegorz ; Dybkowski, Mateusz ; Orlowska-Kowalska, Teresa
Author_Institution :
Inst. of Electr. Machines, Drives & Meas., Wroclaw Univ. of Technol., Wroclaw, Poland
Abstract :
In the paper chosen rotor flux and speed estimation methods for the speed sensorless induction motor drive are presented. Speed estimators based on: the sliding mode theory (SMO), model reference adaptive systems (MRAS) technique and two chosen concepts based directly on the rotor slip frequency calculation are discussed and compared. Stator flux and speed estimators sensitivity to the motor parameter uncertainties is investigated. Simulation and experimental results of the sensorless DTC-SVM without speed control loop are presented. The low speed region and the dynamic properties of the IM drive with electromagnetic torque and stator flux feedbacks are tested.
Keywords :
angular velocity control; induction motor drives; model reference adaptive control systems; rotors; sensorless machine control; stators; torque; variable structure systems; electromagnetic torque; flux estimators; model reference adaptive systems; rotor flux; rotor slip frequency calculation; sensorless induction motor drive; sliding mode theory; speed control loop; speed estimation; stator flux feedbacks; Induction motors; Mathematical model; Observers; Rotors; Stators; Torque;
Conference_Titel :
Industrial Electronics (ISIE), 2011 IEEE International Symposium on
Conference_Location :
Gdansk
Print_ISBN :
978-1-4244-9310-4
Electronic_ISBN :
Pending
DOI :
10.1109/ISIE.2011.5984213
