Modelling and Parameter Determination of an Induction Servo-Motor

This paper presents the modelling and parameter determination of an induction motor. The dynamic induction motor model was derived in relatively simple terms by using the concept of space vectors in d-q variables based on two-axis theory equations and the space phasor notation. A synchronous reference frame in which rotor flux lies on the d-axis was chosen with simplified dynamic equations and torque expressions. This research work presents these models with typical results and provides guidelines for their use for the dynamic simulation of small power induction motor based on mathematical modelling. An on-line dynamic simulation experiment was carried out to determine the induction motor parameters using MATLAB/Simulink program. The results obtained showed that the induction motor performs better under no-load. For satisfactory and better performance under load condition, controller will have to be introduced.