Modeling of Eccentric Rotor Dynamics in an Unbalanced Magnetic Field
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Дата
2024-06
Назва журналу
Номер ISSN
Назва тому
Видавець
Khmelnytskyi National University
Анотація
The paper studies the dynamics of a three-phase induction motor with squirrel cage rotor, which has eccentricity of different kinds. For this purpose, a mathematical model of oscillations of a rigid rotor with mass eccentricity, which
oscillates on two elastic supports, is established. The model is further extended to take into account the forces of unbalanced magnetic pull, which arise under static and dynamic magnetic eccentricity. A simulation model in Simulink/Simscape Multibody environment is created to solve the obtained nonlinear model. The simulation of induction motor dynamics is carried out and the vibration signals are analyzed in time and frequency domain. Vib ations caused by static magnetic eccentricity occur at twice the electrical frequency. Vibrations caused by dynamic eccentricity take the form of a rotor frequency signal modulated by a low frequency depending on the rotor precession. The
model can be used for vibration diagnostics of motor rotor eccentricity.
Опис
Ключові слова
squirrel-cage induction motor, rotor eccentricity, UMP
Бібліографічний опис
Goroshko, A., Zembytska, M. (2024). Modeling of Eccentric Rotor Dynamics in an Unbalanced Magnetic Field. In actual problems of modern science 2024. Proceedings of the 10th International Conference "X Ukrainian-Polish Scientific Dialogues", June 11-15 2024, p. 212-219