Title :
A robust control for induction motor using a variable structure model reference adaptive control (VS-MRAC)
Author :
Furtunato, Alex F A ; Salazar, Andrés Ortiz ; De Araujo, Aldayr Dantas
Abstract :
This paper presents an angular shaft speed control scheme of an induction motor. The induction motor modelling is performed through vector control with rotor flux orientation. The used control strategy is variable structure model reference adaptive control, that is applied to control uncertain plants. Its main characteristics are the use of a switched control law under a structure with a reference model and the need of only the input and output measures of the plant. The system is formed by a 0.25 hp induction motor with a squirrel cage rotor, supplied by a voltage source inverter with pulse width modulation and current control, and a Pentium-100 MHz microcomputer with acquisition cards. Practical results are presented upon different conditions of system functioning, assuring the efficiency of this strategy related to its robustness to load disturbances and parameters variations
Keywords :
DC-AC power convertors; PWM invertors; angular velocity control; control system analysis; control system synthesis; machine testing; machine theory; machine vector control; model reference adaptive control systems; robust control; rotors; squirrel cage motors; variable structure systems; 0.25 hp; 100 MHz; PWM VSI; Pentium-100 MHz microcomputer; acquisition cards; angular shaft speed control; control design; control performance; control simulation; load disturbances; parameters variations; robust control scheme; robustness; rotor flux orientation; squirrel cage induction motor; switched control law; uncertain plants; variable structure model reference adaptive control; vector control; voltage source inverter; Adaptive control; Current control; Induction motors; Machine vector control; Pulse inverters; Pulse width modulation inverters; Robust control; Rotors; Shafts; Velocity control;
Conference_Titel :
Power Electronics Congress, 1998. CIEP 98. VI IEEE International
Conference_Location :
Morelia
Print_ISBN :
0-7803-5006-5
DOI :
10.1109/CIEP.1998.750661
