Presentation Information
[APP1-04]Dynamic Response of YBCO Bulks Maglev System Under High Frequency Excitation
*Li Wang1, Yanxing Cheng1 (1. Southwest Jiaotong University (China))
Keywords:
Maglev,YBCO Bulk,High Frequency Excitation,Dynamic Response,Vibration
YBCO bulk superconductors have been successfully applied to realize stable magnetic levitation in a full-scale prototype system launched at Southwest Jiaotong University, Chengdu, China, in 2021. This achievement demonstrated the basic load-bearing capability and low-speed operational feasibility of YBCO bulk-based maglev technology. To further enable high-speed operation, it is essential to investigate the dynamic performance of the YBCO bulk levitation system under high-frequency excitations. Under identical track conditions, higher speeds generally induce higher-frequency disturbances, which become a dominant source of vibration. In this study, an experimental setup is developed to measure the vibration response of the system to external excitations in different directions. The responses under varying excitation frequencies are compared, and the vertical, lateral, and coupled vibrations at different field cooling heights (FCHs) are analyzed. Results confirm that the YBCO bulk maglev system effectively attenuates high-frequency vibrations, with lateral excitations exerting a greater influence on dynamic performance than vertical ones. These findings provide guidance for the smoothness requirements of high-speed operation lines and offer valuable references for future dynamic analyses and design of YBCO bulk maglev systems.