Vibration Reduction Using Eddy Current Damper in High-Temperature Superconducting Maglev System

Autor: Tianci Ren, Penghui Zhang, Jingzhong Zhao, Zhihao Ke, Zigang Deng, Haitao Li
Rok vydání: 2021
Předmět:
Zdroj: Journal of Superconductivity and Novel Magnetism. 35:87-94
ISSN: 1557-1947
1557-1939
Popis: The high-temperature superconducting (HTS) maglev system has great potential to become a new type of rail transit due to its unique self-stabilizing levitation, low noise pollution, and environment-friendly operation. However, previous studies have shown that the damping properties of HTS system are low, and hence, its large-amplitude nonlinear vibration is prone to occur under external interference, which will affect the stability, safety, and comfort of the long-term operation of the maglev vehicle. Therefore, it is necessary to improve the damping performance of HTS maglev system, minimize the impact of vibration on the maglev system, improve the anti-interference ability of the system, and ensure the smoothness and stability of the system. In this work, an eddy current damper (ECD) is designed to suppress the vibration that may occur during the operation of the HTS maglev vehicle; the ECD is placed at the same height as the HTS bulks. And by collecting the displacement and acceleration signals of the HTS levitator, the efficiency of dampers in suppressing vibration with different copper thicknesses under different field cooling heights (FCHs) is analyzed. The experimental results show that the additional ECD can effectively reduce the vibration of the HTS levitator, especially among the resonance frequency range. And when the FCH is set to the commonly used engineering height of 30 mm, the ECD has the highest damping efficiency. The relevant research results in this work provide a possible solution to the problems encountered in the operation of the maglev train in the real scene.
Databáze: OpenAIRE
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