Title :
A sub-optimal second order sliding mode controller for current-fed induction motors
Author :
Ferrara, Antonella ; Rubagotti, Matteo
Author_Institution :
Dept. of Comput. Eng. & Syst. Sci., Univ. of Pavia, Pavia, Italy
Abstract :
A second order sliding mode controller for current-fed induction motors is proposed in this paper. The design of the controller is based on a reduced order model of the machine, and the control variables are non-discontinuous currents, obtained integrating a discontinuous auxiliary control signal. The phase voltages are then generated using a current regulated pulse width modulation inverter, while the rotor flux value is obtained by means of a simple observer. The convergence properties of the proposed control strategy are studied in the paper, and verified in simulation.
Keywords :
PWM invertors; induction motors; machine control; observers; reduced order systems; rotors; variable structure systems; controller design; convergence property; current regulated pulse width modulation inverter; current-fed induction motors; discontinuous auxiliary control signal; nondiscontinuous currents; observer; phase voltages; reduced order model; rotor flux value; suboptimal second order sliding mode controller; Electric variables control; Induction generators; Induction motors; Pulse width modulation inverters; Reduced order systems; Rotors; Signal generators; Sliding mode control; Stators; Voltage control;
Conference_Titel :
American Control Conference, 2009. ACC '09.
Conference_Location :
St. Louis, MO
Print_ISBN :
978-1-4244-4523-3
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2009.5160116
