Sensorless control of a PMSM for dynamic control performance evaluation

This paper presents the performance evaluation of a Permanent Magnet Synchronous Machine (PMSM) under various dynamic changes with sensorless speed detection. Speed and rotor position of the motor is calculated indirectly from the machine parameters. A new control algorithm which is a Modified Sliding Mode Control (MSMC) has been proposed and machine drive performance have been evaluated using (MSMC) method. The basic design procedures, stability analsysis have been discussed for the controllers. The results of the proposed (MSMC) controller have been compared with the conventional PI controller. The system responses under large dynamic changes have been verified using MATLAB/SIMULINK.