Control Sensorless del motor de inducción con convertidor de potencia.

Abstract

This work presents the development of a SENSORLESS control for the induction motor by means of a three-phase multilevel converter with optimization of the harmonic content in line voltages designed and implemented, based on the method of frequency variation implanted in a multi-level inverter in H bridge of source common in the range of 5 Hz to 100 Hz, which involves the development of a multiobjective optimization algorithm (switching angles, THD and voltage level), the SENSORLESS control technique feeds back the control loop with the estimated speed of the magnitudes of current based on the mathematical model of the machine, whereby the sensor system is embedded in the converter eliminating the need to use mechanically coupled sensors in the induction motor, the control technique works properly in steady and dynamic regime, and the harmonic content is optimized being the greater of 2% THD.