Sensorless Control System for Three-Stage Synchronous Machine

This article is devoted to the development of a sensorless field-oriented control system of a three-stage synchronous machine for use in the aviation. The sensorless system is based on an algebraic rotor position observer. The key feature of the presented observer is the ability to work from zero speed, which is an issue nowadays. The estimator is also robust to changes in resistance and inductance of the stator during operation. In comparison with other solutions given in the literature, the proposed observer is simple to implement and configure. At the end of the article, the results of simulation modeling of the sensorless system operation are given, and the system performance in the entire speed range is estimated.