Dynamic performance of HTS maglev and comparisons with another two types of high-speed railway vehicles.

• After long-time heavy load, the levitation force of the YBaCuO bulks changes small. • The dynamic model of HTS maglev vehicle is established in UM software. • The dynamic response of the three vehicles are compared under the same condition. • The HTS maglev vehicle is superior to other vehicles in some dynamic parameters. • The HTS maglev vehicle's dynamic performance has potential advantages in high speed. In order to explore the potential advantages of HTS maglev vehicles, the dynamic response of HTS maglev vehicle-bridge coupling system model under different speeds and track beam spans is calculated by using Universal Mechanism (UM) software, which is further compared with two existing high-speed train systems, the high-speed EMS vehicle and wheel-rail vehicle. Before establishing the dynamic model, first a simplified mathematical model of levitation force of HTS maglev is extracted based on the experimental results of three YBCO bulks on a Halbach permanent magnet guideway (PMG). The results of simulation show that the HTS maglev vehicle can fully meet the requirements of current high-speed railway operation index on the acceleration of car body and its influence on track beam. The comparisons show that HTS maglev vehicle has some advantages over high-speed EMS vehicle and wheel-rail high-speed vehicle, especially in the acceleration of the car body and the impact on the track beam under high-speed operation. This makes a better understanding of the dynamic performance of HTS maglev vehicle, and provides an effective reference for the selection of high-speed railway system types and related indicators in the future. [ABSTRACT FROM AUTHOR]