Design and implementation of intelligent soft- start controller for induction motor controlled by VSI

Abstract EN

This paper presents a practical implementation of the Fuzzy logic control to an electrical drive system.

The hardware control circuits are divided into two groups, the first one is to determine the suitable trigger angle to the load according to their windings resistance circuit.

The second is to monitor the motor operation and runs in order to compensate the trigger angle value when any disturbances occur at the motor. The soft starters use the current through the stator winding of the motor as feedback, in which the voltage is adjusted through the setting of the IGBT firing angle.

The feasibility and effectiveness of the control scheme are experimentally demonstrated and the results are compared with the conventional soft starter controller in dynamic responses of the closed-loop drive system.