Dynamic Performances in Sensorless System with Two-Phase Induction Motor

摘要

In this paper is treated one of the mosteffective and widely used methods to obtain gooddynamic performances for AC motor namely rotor fluxdirect field oriented control. A key role in achievingsuch adjustment is played by the rotor flux estimator.This on the one hand provides the absolute valuewhich is used in the flux feedback control loop and onthe other hand it gives the position of the rotor fluxrelative to the stator system. In the block diagram ofthe driving system with direct field oriented adjustingcontrol there are used estimators derived directly fromthe machine equations. Using Matlab/Simulinksimulation environment applied for a two-phaseinduction motor model, simulations were made fordifferent imposed speeds and the characteristics ofeach estimator block diagram were highlighted.