A continuous-time observer to estimate electrical parameters of induction machines

This paper introduces a new observer topology to estimate the electrical parameters of induction machines. The observer utilizes classical least mean squares principle of adaptive control and filtering theory. O-line parameter estimation techniques generally require the use of a special test setup or occasionally make unrealistic assumptions such as the availability of the entire state vector measurements. The significance of the proposed observer is its independence of special equipment/drives and its ability to estimate major IM parameters, together with unobservable machine states like rotor flux linkages.