WU Dingding, HUANG Huan, YUAN Yuhang, et al. Effect of onboard superconducting magnet length on the levitation characteristics of electrodynamic levitation train. [J]. Electric drive for locomotives (4):9-16(2022)
DOI:
WU Dingding, HUANG Huan, YUAN Yuhang, et al. Effect of onboard superconducting magnet length on the levitation characteristics of electrodynamic levitation train. [J]. Electric drive for locomotives (4):9-16(2022) DOI: 10.13890/j.issn.1000-128X.2022.04.002.
Effect of onboard superconducting magnet length on the levitation characteristics of electrodynamic levitation train
Superconducting electrodynamic levitation represents one of the development trends of the maglev technology. Taking the superconducting electrodynamic levitation train running on the Yamanashi test line as the research object
this paper was aimed to further study the levitation characteristics of the superconducting electrodynamic levitation system. A three-dimensional transient simulation model of the single-side on-board magnet - zero-flux coil was established. Firstly
the accuracy of the model was verified according to the released test data
and then the effect of the superconducting magnet length on the levitation force of the train was studied with this model. Finally
the levitation force characteristics of the length-optimized superconducting magnet under different speeds
vertical displacements
and lateral displacements were analyzed
focusing on fluctuation of levitation force. The research results show that the simulation results are close to the released test data
with an error less than 10%
which verifies the accuracy of the simulation model. In addition
the length of the superconducting magnet has little effect on the lift/drag ratio of the train
and the mean value of the levitation force increases linearly with the increasing length of the superconducting magnet; when the coil length is 1 110 mm
the fluctuation amplitude and the fluctuation coefficient of the levitation force are the smallest. The higher the speed
the smaller the fluctuation coefficient of the levitation force; at 500 km/h
the vertical displacement and the lateral displacement within a certain range have little effect on the fluctuation coefficient of the levitation force. The conclusions of this paper provide a reference for the optimization of the dynamic performance of electrodynamic levitation trains.
关键词
超导电动悬浮超导磁体有限元分析电磁仿真悬浮力尺寸优化
Keywords
superconducting electrodynamic levitationsuperconducting magnetfinite element analysiselectromagnetic simulationlevitation forcesize optimization
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