The paper studies the need to take into account the magnetic saturation of a squirrel-cage induction motor (IM). A mathematical description of an IM with linear and nonlinear magnetic characteristics is given. The simulation of motor’s direct start, as well as the field oriented control (FOC) system in Simulink Matlab environment is presented. The results of simulation are presented: time diagrams and mechanical characteristics of the motor. The conclusion is made whether it is necessary to take into account saturation in the study of transients in an asynchronous squirrel-cage motor.
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