Simulation of synchronous reluctance motor with digital control system and magnetic flux estimator

Abstract

A model of a synchronous reluctance motor with a digital control system is presented. The model takes into account the discreteness of the controller and some errors in estimating the voltage vector that arise in such a control system. Features of the motor operation without position/flux feedback as well as with a simple open-loop flux estimator are considered. The control system can be used in applications with moderate requirements for dynamics and accuracy of speed adjustment, with low requirements for starting torque. The model can be used to design a synchronous reluctance motor with more complex flux estimators. The model can also be useful for educational purposes, since the structure of the control system in the model corresponds to the real structure of the AC drive microprocessor control.