%O American Control Conference,
Hyatt Regency Riverfront, St. Louis, MO, USA
June 10-12, 2009
%I IEEE
%T A sub-optimal second order sliding mode controller for current-fed induction motors
%P 59 -64
%B Proceedings of the American Control Conference (ACC '09)
%R 10.1109/ACC.2009.5160116
%A Antonella Ferrara
%A Matteo Rubagotti
%K Electric variables control , Induction generators , Induction motors, Pulse width modulation inverters, Reduced order systems, Rotors, Signal generators, Sliding mode control, Stators, Voltage control 
%D 2009
%L eprints1223
%X 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.