Running magnetic resistance of high-Tc superconducting maglev prototype vehicle in an evacuated tube track

Running magnetic resistance is an important content in the research of high-temperature superconducting (HTS) maglev train, but it has not been intensively studied so far. Based on the completely free suspension HTS maglev train system placed in an evacuated tube, we studied the magnetic resistance...

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Bibliographic Details
Published in:Mechanical systems and signal processing 2022-04, Vol.169, p.108635, Article 108635
Main Authors: Cai, Feinan, Zhou, Dajin, Wei, Jianjun, Wang, Ju, Cheng, Cuihua, Zhang, Yong, Zhao, Yong
Format: Article
Language:English
Subjects:
Amplitudes
Evacuation systems
High temperature
High-Tc superconducting maglev
Low speed
Magnetic fields
Magnetic gradient
Magnetic levitation vehicles
Magnetic resistance
Magnetoresistance
Magnetoresistivity
Resistance-speed characteristics
Superconductivity
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Summary:Running magnetic resistance is an important content in the research of high-temperature superconducting (HTS) maglev train, but it has not been intensively studied so far. Based on the completely free suspension HTS maglev train system placed in an evacuated tube, we studied the magnetic resistance of the HTS maglev vehicle in operation. By measuring the speed attenuation curve of the maglev vehicle under different air pressure and magnetic field gradient, the behaviour of the magnetic resistance of the HTS maglev vehicle in operation is obtained, thereby establishing the correlation between the magnetic resistance (Fm), the running speed (v), and the amplitude of magnetic field gradient (G). The results show that both Fm and dFm/dv increase with the ascension of the amplitude of magnetic field gradient. In addition, the Fm -v curve presents two distinct rate change regions: in the low-speed region, the Fm increases rapidly with speed v, while in the high-speed region, the Fm increases slowly with speed.
ISSN:0888-3270
1096-1216
DOI:10.1016/j.ymssp.2021.108635