Low cost technique for sensorless vector control of induction motors robust in the presence of variations of resistive parameters

The work shows a speed control technique for induction motors using vector control, that is characterized by constructive simplicity, good dynamical behaviour and low implementation cost. This technique does not use a speed sensor and results are robust when resistive parameters change. The technique proposed has been developed with SIMULINK/Matlab and experimentally implemented with help of a digital signs processor (DSP).