Study of numerical simulation and dynamic performance optimization in evacuated tube SS-HTS maglev loop system

Abstract

The maximum running speed of evacuated tube side-suspended high-Tc superconductor (SS-HTS) maglev loop system is only 160 km/h due to the limitation of running loop radius. In order to optimize and improve the high-speed dynamic performance of prototype vehicle in evacuated tube SS-HTS maglev loop system, the accelerated rotation dynamic process of prototype vehicle is equivalent to the quasi-static process of high-Tc superconductor (HTS) maglev system. The theoretical model of equivalent system is established based on superconducting and classical electromagnetic theory. The levitation and guiding performance of evacuated tube SS-HTS maglev loop system with different thicknesses single-seed YBaCuO bulks is simulated and tested by finite element software COMSOL Multiphysics (COMSOL) and equivalent experiment respectively. The simulation and experiment results show that the maximum running speed of prototype vehicle is expected to be increased by 15.1% from 160 km/h to 186.5 km/h when the HTS bulk thickness is reduced by 55% from 20 mm to 9 mm. The above research results provide the design reference for building the higher-performance and higher-speed evacuated tube SS-HTS maglev loop system.