The Influence Of The Sampling Period On The Performance Of The Regulation By DTC Of The Induction Motor

The regulation by DTC of the induction motor is a quite “natural” method, being much lighter, as mathematical support, than the vector control, regardless the type of field considered for orientation. Despite its simplicity, the practical implementation of the method rise serious problems, mainly due to the fact that the sampling period for regulation pourposes is right the minimum PWM period of the inverter which supplies the motor. This why, without involving powerful command systems, the results can be far for the expectances. The paper deals with the simulation of such regulation system and highlights the importance on the performances of the sampling period.