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 Estudios Superiores de Monterrey, Mexico

fYear

1992

fDate

4-9 Oct. 1992

Firstpage

1724

Abstract

A new approach to controlling the speed and rotor flux of an induction motor using sliding-mode theory 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. A simple control algorithm that is based on the existence of a certain positive definite matrix is proposed. The Lyapunov direct method is used to ensure reaching and sustaining of the sliding-mode. To avoid direct measurement of the rotor flux, a technique based on manipulation of Stanley´s equations is introduced. Simulation studies were conducted. The control algorithm exhibited excellent drive performance in the presence of load disturbances and stator and rotor resistances changes of up to 100% of the nominal values.<>

Keywords

Lyapunov methods; induction motors; machine theory; magnetic flux; magnetic variables control; matrix algebra; rotors; state-space methods; stators; variable structure systems; velocity control; Lyapunov direct method; Sabanovic´s equations; Stanley´s equations; algorithm; control system synthesis; design; induction motor; machine control; machine theory; magnetic flux; matrix; performance; rotor flux; sliding mode control; state-space; stator; velocity control; Algorithm design and analysis; Equations; Induction motors; Rotors; Sliding mode control; State-space methods; Stators; Velocity control; Velocity measurement; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE

Conference_Location

Houston, TX, USA

Print_ISBN

0-7803-0635-X

Type

conf

DOI

10.1109/IAS.1992.244227

Filename

244227