DocumentCode :
1818434
Title :
Assessment of motor parameter variation in vector controlled induction motor
Author :
Rafajlovski, Goran ; Ratz, Emil ; Manov, D. ; Hristovski, D.
Author_Institution :
Electrotech. Fac., Univ. St. Kiril Metodij, Macedonia
Volume :
2
fYear :
1997
fDate :
7-11 Jul 1997
Firstpage :
522
Abstract :
The aim of this paper is to compare the influence of parameter uncertainties on the performance of two vector oriented control schemes of an electrical drive with an induction motor. In the first one the field oriented control method is used to control the speed of the induction motor. In this system the spatial vector of the stator current is transformed into a i1q component which creates the torque, and into a i1d component which creates the flux. If a d-axis component of the stator current is of constant value, the motor drives with a constant flux and the torque can be altered rapidly by means of the q-axis component of the stator current i1q. Two components U1d, U1q of stator voltages in d-q coordinate system which must be applied to the stator d-q equivalent windings, are generated by two PI regulators controlling the two components: flux-generating and torque generating stator current. In the second one the stator flux oriented control method is used to control the torque of the induction motor. By using instantaneous voltage space vectors with selection of optimum inverter switching modes employing a vector modulation technique, the direct control of torque and stator flux is achieved
Keywords :
electric current control; induction motor drives; invertors; machine control; machine theory; magnetic flux; magnetic variables control; rotors; stators; torque control; two-term control; PI regulators; constant flux; d-q coordinate system; direct torque control; electrical drive; error assessment; field oriented control; flux; induction motor; motor parameter variation; optimum inverter switching modes; parameter uncertainties; stator current control; stator current spatial vector; stator d-q equivalent windings; stator voltages; torque control; vector controlled induction motor; vector modulation technique; Control systems; Induction generators; Induction motors; Inverters; Motor drives; Regulators; Stator windings; Torque control; Uncertain systems; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics, 1997. ISIE '97., Proceedings of the IEEE International Symposium on
Conference_Location :
Guimaraes
Print_ISBN :
0-7803-3936-3
Type :
conf
DOI :
10.1109/ISIE.1997.649008
Filename :
649008
Link To Document :
بازگشت