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With the spread of electric motors in various fields of work, such that they have become the infrastructure for many aspects of life, it has become necessary to obtain a speed controller for these motors to make them more efficient in general uses. The Field-Oriented Control (FOC) methodology is frequently recognized as one of the most important and straightforward of all the alternatives for controlling the speed of an electric motor utilizing the vector control approach. In this study, a seven-phase induction motor's speed was controlled using FOC technology exploiting the advantages of multi-phase motors . This technique offers a variety of options for controlling methods. A system was created to control the speed of a seven-phase induction motor using Field Oriented Control technology and through two methods of control: Sliding Mode Control (SMC) and Proportional Integral (PI) controller, within the principles of the sine pulse width modulation (SPWM) technique. This system was designed to control the motor speed and rotor flux in the event of a disruption brought on by an increase in the rotor's resistance as a result of the motor's temperature rising. Consequently, the system turns non-linear, and conventional controllers like PI are unable to stabilize it. Therefore, there is a pressing demand for controllers that ensure higher stability for non-linear systems like SMC. The system was simulated using the Matlab/Simulink environment, monitored under various operating settings, and its stability was evaluated against external variables in addition to its quick reactions and stability at the pace required to work with it.
Sultan et al. (Mon,) studied this question.
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