Implementation of a position control system of a sensorless synchronous reluctance drive

This paper presents a novel position control for a sensorless synchronous reluctance drive system. By measuring the three-phase currents of the motor, a rotor position estimator is achieved. Then, a velocity estimator is derived from the estimated rotor position by using a state estimating technique. Next, a robust position controller is designed to improve the transient and load disturbance responses. A digital signal processor, TMS-320-C30, is used to execute the estimating and control algorithms. To evaluate the performance of the position control system, a moving table is connected with the drive system. The drive system can precisely control the moving table. Experimental results show that the proposed system has good performance.