Speed Estimation of MRAS Based Induction Motor Drive Utilizing Machine’s d- and q- Circuit Impedances Using PI and ANFIS Controller

This paper presents the principle of sensorless speed estimation of induction motor drive based on the model reference ad aptive system (MRAS), using the efficient impedances from d and q circuits. MRAS functional part is given by the difference of the effective working impedances of the stator d and q circuit. This approach shows no flux orientation shift when calculating the speed. This system performs satisfactorily over all four operating quadrants and is also free from the stator resistance effect. The analysis is verified by comparing various MATLAB simulations using both PI and ANFIS controllers