Identification and Sensorless Control of PMSM Using FOC Strategy and Implementation in Embedded System

This article presents the procedure for identifying the electrical and mechanical parameters of the PMSM. The parameter identification procedure is required in the event that the motor’s electrical and mechanical parameters are unknown, or in industrial applications at the beginning of a drive cycle due to variations of the PMSM parameters with the temperature. The parameter identification procedure is implemented in the Matlab/Simulink environment. This procedure was also implemented in an embedded system and the results of the two (offline and online) identification methods of the nominal parameters of the PMSM are presented comparatively to the parameters in the datasheet. The hardware and software implementation for a sensorless control PMSM using the FOC (Field Oriented Control) strategy and the speed back-EMF (back electromotive force) observer is also presented.