Sliding Mode Solution for Rotor Flux Control and Estimation of Induction Motors Using Energetic Macroscopic Representation

Induction motors (IMs) are among the most prevalent electrical motors in industry because of their simple structure and low cost. One of the challenges in operating this type of motor by the field oriented control (FOC) method is calculating its continually varying properties such as flux, resistance, and inductance. Despite significant advances in science and technology, there is currently no equipment that can directly measure them, making it difficult to apply traditional model-based control methods. The purpose of this study is to manipulate a sliding mode observer (SMO) for rotor flux. Based on the estimated value, a model free sliding mode controller (MFSMC) is utilized to perform the flux control strategies under different working conditions of the motor. The proposed approach of the IM drive system is modelled using Energetic Macroscopic Representation (EMR) and validated by simulation in Matlab/Simulink®.