Title :
Adaptive flux observer for induction motors
Author :
Zheng, Yuhong ; Loparo, Kenneth A.
Author_Institution :
Dept. of Syst. & Control Eng., Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
An adaptive observer for rotor resistance is designed to estimate rotor flux for the a-b model of an induction motor assuming that rotor speed and stator currents are measurable. A singularly perturbed model of the motor is used to design a sliding mode observer which drives the estimated stator currents to their true values in the fast time scale. The adaptive flux observer on the sliding surface is based on the equivalent switching vector and both the estimated fluxes and the estimated rotor resistance converge to their true values
Keywords :
adaptive estimation; induction motors; magnetic flux; observers; singularly perturbed systems; stators; variable structure systems; a-b model; adaptive flux observer; equivalent switching vector; estimated rotor resistance; induction motors; rotor resistance; rotor speed; singularly perturbed model; sliding mode observer design; stator currents; Adaptive control; Circuits; Current measurement; Electrical resistance measurement; Induction motors; Observers; Rotors; Stators; Surface resistance; Voltage;
Conference_Titel :
American Control Conference, 1998. Proceedings of the 1998
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-4530-4
DOI :
10.1109/ACC.1998.703047
