Superconducting electrodynamic suspension (EDS) has the advantages of large levitation gap

energy saving

environmental friendliness

and so on. It is one of the promising technical routes for the high-speed maglev train system in the future. The EDS system faces the issue of poor stability at low speeds. Additionally

external disturbances such as guideway irregularity and aerodynamic disturbance can cause severe vibrations or even lead to rail collision. Therefore

it is necessary to suppress the vibrations of the vehicle body. Using active damper coils is a crucial method for suppressing vehicle vibrations. This paper analyzes and compares the vibration suppression characteristics of speed/acceleration feedback control and positive/negative current control based on the field-circuit-motion coupled model of an EDS system. The study explores the effects of the active damper coil phase sequence on the suppression of vehicle roll

pitch

heave

lateral

and yaw vibration under the positive/negative current control. The findings indicate that the optimal control is achieved through positive and negative current regulation in the active damper coils. The current sequence of these coils directly influences the control performance

and selecting appropriate sequences for different degrees of freedom can effectively dissipate vibrational energy and suppress oscillations within 1 s. This study provides crucial insights for the advancement of superconducting electrodynamic suspension technology.