Synthesis of Induction Motor Adaptive Field-Oriented Control System with the Method of Signal-Adaptive Inverse Model

Abstract

Adaptive field-oriented vector control systems of induction motors are of the great interest for two reasons. Firstly, there is a wide range of induction motor drives applications. Secondly, induction motors are known to be non-stationary control objects. The main issue of this paper is to synthesize the control system, which is not sensitive for the signal and parameter disturbances. This issue is achieved by closing the speed control loop and rotor flux linkage control loop through the special dynamic subsystems. These subsystems are so-called «disturbances observer» and total disturbances estimation «adaptor». Meanwhile, the system is required to allow decoupling the control channels of rotor speed and rotor flux linkage. The method of signal-adaptive inverse model is chosen for synthesis. The method makes it possible to control the induction motor with the desirable performance indices of transient process and compensation of different disturbances influence. The results are proved by computer simulation of developed induction motor field-oriented control system.