Title :
Sliding-mode control of an induction motor without flux measurement
Author :
Soto, Rogelio ; Yeung, Kai S.
Author_Institution :
Centro de Inteligencia Artificial, Inst. Tecnologico y de Estudios Superiores de Monterrey, Mexico
Abstract :
A new approach to control the speed and rotor flux of an induction motor using the theory of the sliding-mode is presented. Sabanovic´s equations for an induction motor are first modified to a state space form suitable for the present design of the algorithm. For controlling the speed and rotor flux of the drive, a simple control algorithm is proposed based on the existence of a certain positive definite matrix. The Lyapunov direct method is used to ensure the reaching and sustaining of sliding-mode. Obviation of flux measurement is achieved through manipulation of Stanley´s equations. Simulation studies are conducted. The control algorithm exhibits excellent drive performance in the presence of load disturbances and stator and rotor resistances changes up to 100% of the nominal values
Keywords :
Lyapunov methods; induction motor drives; machine control; machine theory; magnetic flux; magnetic variables control; rotors; simulation; variable structure systems; velocity control; Lyapunov direct method; Sabanovic´s equations; Stanley´s equations; drive; flux measurement; induction motor; load disturbances; positive definite matrix; rotor flux control; rotor resistance; sliding-mode control; speed control; state space equations; stator resistance; Algorithm design and analysis; DC motors; Equations; Induction motors; Industry Applications Society; Rotors; Sliding mode control; State-space methods; Symmetric matrices; Velocity control;
Journal_Title :
Industry Applications, IEEE Transactions on
