A Stator Resistance Estimation Algorithm For Sensorless Dual Stator Winding Induction Machine Drive Using Model Reference Adaptive System

In this paper, an X-model reference adaptive system (X-MRAS) estimator for speed estimation of indirect vector controlled dual stator winding induction machine drive, and online stator resistance estimator is presented. X-MRAS estimator does not require flux observer for estimation, so this is immune to the pure integration problems. Furthermore, the estimation scheme is stable in all four regions of operation. In order to improve the zero and low-speed operation, an online stator resistance estimator based X-MRAS is designed. The stability of the estimation schemes and sensitivity analysis are further added to ensure the robustness of the drive system. The proposed speed estimation approach for DSWIM drive, as well as the online stator resistance estimation algorithm, have been simulated in MATLAB/SIMULINK.