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31 May 2023 Research on the influence of inverter power supply on the vibration and noise source of the linear induction motor in the medium-low speed Maglev train
Fengyu Ou, Chunjun Chen
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Proceedings Volume 12704, Eighth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2023); 127040O (2023) https://doi.org/10.1117/12.2680252
Event: 8th International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE 2023), 2023, Hangzhou, China
Abstract
To study the characteristic frequency of the vibration and noise source of the linear induction motor (LIM) in the mediumlow speed maglev train powered by inverter, this paper measured the three-phase current powered by inverter and input the current into the LIM finite element model. The LIM air-gap magnetic field was calculated by the finite element method, and the main harmonic frequency of the air-gap magnetic field in inverter power supply was analyzed from its spectrum. The LIM electromagnetic force and its characteristic frequency were analyzed and calculated by finite element method and analytical formula. The natural mode shape and frequency of the motor stator were calculated by the finite element method, finding out that the natural mode frequencies of the motor have resonance frequency bands with the harmonic components of the electromagnetic force. The tests of the LIM vibration and noise under inverter power supply showed that the frequencies of vibration and noise are consistent with the frequencies of current and electromagnetic force harmonics, indicating that the current harmonics under inverter power supply is the main reason for the LIM vibration and noise.
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Fengyu Ou and Chunjun Chen "Research on the influence of inverter power supply on the vibration and noise source of the linear induction motor in the medium-low speed Maglev train", Proc. SPIE 12704, Eighth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2023), 127040O (31 May 2023); https://doi.org/10.1117/12.2680252
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KEYWORDS
Vibration
Electromagnetism
Magnetism
Power supplies
3D modeling
Finite element methods
Fourier transforms
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