ROBUST STATOR FIELD ORIENTED INDIRECT VECTOR CONTROL OF INDUCTION MOTOR SPEED: THEORETICAL ANALYSIS AND EXPERIMENTAL INVESTIGATIONS RESULTS

In paper the solution of problem synthesis speed-flux vector control algorithm of induction motor with stator field orientation is presented. Proposed control algorithm guarantees asymptotic speed-stator flux tracking, asymptotic indi-rect stator flux orientation, and induction motor decomposition on two interconnected systems ? electrical and mechanical. Control algorithm structure provides additional degree of freedom for dynamic performance and robustness properties specification due to the presence of the corrective feedbacks, which give the same properties to the electrical subsystem dynamics, as when fool order flux observer is used. The results of extended experimental testing are also presented and confirm the theoretical findings.