Abstract
Taken the Japanese superconducting high-speed maglev train MLX01 as the research object, this paper conducts theoretical analysis and modeling of the superconducting coil magnetic field. The spatial magnetic field density distribution under different air gaps of the superconducting coil is analyzed. A real superconducting linear synchronous motor finite element model including the coupling magnetic field of the superconducting coil and the propulsion coil is established and its validity is verified. Based on the finite element model of the superconducting linear synchronous motor, the magnitude of the induced voltage and the harmonic spectrum in the track coil with a speed of 135 m/s are analyzed and studied. On this basis, the traction force of the superconducting linear synchronous motor, the amplitude of the current on the inner side of the track and other related control parameters with the power angle are analyzed. Quantitative analysis and calculation of the traction control characteristics with a speed of 135 m/s are carried out to lay the foundation for the design and stable operation of the control system during the operation of the superconducting maglev train. The results show that the thrust of the superconducting linear synchronous motor increases linearly with the increase of the current amplitude, and the pulsation frequency of the value within one cycle is 6 times the fundamental frequency. When the input voltage is constant, the thrust of the superconducting synchronous linear motor increases and then decreases with the increase of the power angle, but the power angle increases with the current of the track coil.
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Wang, X., Huang, J., Fang, Z. (2022). Research on EDS Propulsion Characteristics of Superconducting High Speed Maglev Train. In: Jia, L., Qin, Y., Liang, J., Liu, Z., Diao, L., An, M. (eds) Proceedings of the 5th International Conference on Electrical Engineering and Information Technologies for Rail Transportation (EITRT) 2021. EITRT 2021. Lecture Notes in Electrical Engineering, vol 864. Springer, Singapore. https://doi.org/10.1007/978-981-16-9905-4_3
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