Dynamic performance of HTS maglev and comparisons with another two types of high-speed railway vehicles. (July 2021)

• Record Type: Journal Article
• Authors: Yuan, Yuhang; Li, Jipeng; Deng, Zigang; Liu, Zhehao; Wu, Dingding; Wang, Li
• Is Part Of: Cryogenics. Volume 117(2021)
• Publication Date: 2021-07
• Subjects: Levitation force -- HTS maglev -- Vehicle-bridge coupled -- EMS -- Wheel-rail -- Dynamical response; Low temperature engineering -- Periodicals; Low temperature research -- Periodicals; 536.56
• DOI: 10.1016/j.cryogenics.2021.103321
• Languages: English
• ISSNs: 0011-2275

Abstract

Highlights: 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. Abstract: 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.