Title :
The analysis and design of the speed sensorless vector control AC drive system for induction motor
Author :
Changjiang, Wang ; Fahai, Li
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
In this paper, some topics on the speed sensorless vector control of induction motors are studied, such as stator current control, state estimation, parameters identification, etc. For the features of the system, the following strategies are proposed: 1) a discrete stator current controller; 2) a modified rotor flux observer; 3) a speed identifier based on MRAC; 4) motor parameters identification based on the recurrent least square method with weighting factors; and 5) a vector controller with feedforward decouplings. Consequently, the design means of a speed sensorless AC motor drive system for induction motors is provided. In addition, an experimental system is developed and its performance tested. The results of these simulations and experiments show the validity of this control method
Keywords :
control system analysis; control system synthesis; discrete systems; electric current control; feedforward; induction motor drives; machine control; machine testing; machine theory; model reference adaptive control systems; parameter estimation; state estimation; stators; variable speed drives; velocity control; MRACS; control design; control performance; control simulation; discrete stator current control; feedforward decoupling; induction motor drive; modified rotor flux observer; parameters identification; recurrent least square method; speed identification; speed sensorless vector control; state estimation; weighting factors; AC motors; Control systems; Current control; Induction motors; Machine vector control; Parameter estimation; Rotors; Sensorless control; State estimation; Stators;
Conference_Titel :
Industrial Electronics, Control, and Instrumentation, 1996., Proceedings of the 1996 IEEE IECON 22nd International Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7803-2775-6
DOI :
10.1109/IECON.1996.566042
