A MRAC parameter identification algorithm for three-phase induction motors

This paper presents a discrete time algorithm able to identify all electrical parameters of three-phase induction motors. This algorithm is based on Robust Model Reference Adaptive Controller (RMRAC) applied to electric machine model. The identification uses only measurements of stator currents with standstill rotor. From the correct parameters it is possible to design high performance controllers and sensorless drives for the induction motor. Furthermore, the correct parameters of induction motor allow a better representation of dynamic simulation behavior of machine. Experimental results are presented to provide the effectiveness of the method.