Dynamical Magnetic Resistance of HTS Maglev Vehicle in an Evacuated Tube Track

Based on the evacuated tube high- T c superconducting (HTS) side-suspension (SS)-maglev circular track system which reached the maximum running speed of 160km/h, we studied the dynamical magnetic resistance of the maglev vehicle moving along the magnetic track. Different magnetic field gradients are formed by stacking silicon steel sheets on the surface of permanent magnet guideway (PMG) in this work. The running resistance of the prototype vehicle under different magnetic field gradients is acquired by processing the velocity attenuation data measured via acceleration sensor during the running process. The corresponding magnetic resistance is obtained by further data processing and analysis. A peak was observed in the low speed range of the speed dependent curve of the magnetic resistance, which can be attributed to the influence of the resonance. When the running speed of the maglev vehicle exceeds a certain value, the magnitude of magnetic resistance is positively related to the running speed and magnetic field gradient. The results of this study can provide a reference for the optimization of the manufacturing cost, performance, maintenance and safety in the application of HTS maglev vehicle.