Sliding mode control method for three-phase induction motor with magnetic saturation

This study applies the sliding mode control technique to control the three-phase induction motor under magnetic saturation. Based on the field-oriented control technique, the proposed sliding mode controller is decoupled into two independent controllers for the stator flux and rotor speed. In addition, the sliding surface and reaching laws are improved to be able to increase the convergence rate and reduce discontinuity phenomena. The simulation and experimental results of the three-phase 1-hp induction motor in magnetic saturation mode will be addressed clearly to show the effectiveness and stability of the proposed control method in ensuring that the motor torque exceeds 5× the rated value.