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Abstract
This paper investigates the mechanical transient processes of a frequency-controlled induction motor operating under asymmetric conditions. The study focuses on evaluating the dynamic behavior of induction motor drives under voltage asymmetry and improving the effectiveness of frequency-controlled electric drive systems.
Materials and MethodsA mathematical model incorporating the time-dependent frequency variation and the load characteristics acting on the induction motor shaft was employed. Since the resulting system of differential equations contains numerous variables and unknown parameters, a graphical-analytical method was applied to analyze the transient processes efficiently.
ResultsThe analysis made it possible to determine the acceleration and deceleration characteristics of the rotating magnetic field, as well as the variation of motor slip as a function of time and frequency under different levels of voltage asymmetry. These findings provide a theoretical basis for implementing frequency-controlled induction motor drives and for establishing the requirements of automatic control systems.
ConclusionThe results demonstrate that frequency-controlled induction motor drives can operate effectively under asymmetric conditions; however, their transient mechanical processes are highly sensitive to voltage disturbances. Therefore, maintaining voltage symmetry, implementing protective control functions, and predicting transient behavior through mathematical modeling are essential for improving the reliability and efficiency of electric drive systems.
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Copyright (c) 2026 Shavazov, A.A., Eshqo‘ziyev, X.M., Imomnazarov, A.B., Tuxtayev, B.B. (Muallif)