| Abstract |
An approach for designing robust sliding estimators of rotor flux of induction motors is given. The requirements considered are the convergence rate of the rotor flux estimation error and the robustness against rotor and stator resistances and supply voltage variations, which are modelled as disturbances. These requirements are satisfied by assigning the poles of the system during the sliding motion in such a way as to minimize the effects of the above disturbances on the rotor flux estimation error, in presence of an inequality constraint on the real part of the poles themselves. The observer is tested by digital simulation experiments. |
