Simulation on Electromagnetic Coupling of Integrated EDS Evacuated Tube Transportation System

Superconducting electrodynamic suspension (SCEDS) possesses superiority over others in self-stability, technology maturity, and great levitation gap, rendering it the optimal alternative for sub-sonic travelling integrated with the evacuated tube. However, the coupling relationship among tube and SCEDS train remains ambiguous. As a solution, this work investigates their electromagnetic couplings through demonstrative full-scale simulation model. Initially, the integrated structure and principles are introduced. Subsequently, a simulation model encompassing the tube, superconducting magnets, levitation coils and propulsion windings is established, and its effectiveness is confirmed using openly available experimental data. Finally, the electromagnetic coupling among propulsion, levitation, and guidance systems are explored. The findings indicate minimal impact of additional currents in the tube induced by the levitation coils and propulsion windings. This work can provide the reference for the evacuated tube transportation technology in practical application.