Energetical performances of sinusoidal PWM control of voltage inverter and induction motor drive system

The energetical analysis of the drive system had been performed by means of an experimental platform and on it´s corresponding SIMULINK model for different static operation points. It was considered feeding the asynchronous motor from an indirect voltage source static converter in voltage source with sinusoidal modulation as command strategy. The global model of the drive system, created in MATLAB/SIMULINK environment, provides all the needed tools in order to calculate the parameter values for comparing the energetic performances. The frequencies considered for the energetic analysis are 10Hz, 20Hz, 30Hz, 40Hz and 50Hz, and the load was adjusted up to the nominal value. The SIMULINK model implements a static inverter using sinusoidal modulation as command strategy. The asynchronous motor block corresponds to the model with magnetic resistance and main field saturation by the variation of the static magnetizing inductance depending on the magnetizing current. The following power quality indicators had been taken in to consideration: efficiency, power factor, electrical losses.