Electromagnetic Characteristics Analysis of Superconducting Electrodynamic Suspension System With Rolling Transient Condition

The curved track or uneven side wall has a great impact on the stable running of high-speed electric superconducting (SC) suspension system. The change of electromechanical performances of SC linear synchronous motor (LSM) with rolling transient condition is an important research topic. A novel and comprehensive double-Fourier analysis method is proposed, to analysis the forces and stiffness characteristics of coreless-type SC LSM (SC-LSM) under the rolling transient posture. Primary, the motor topological and rolling posture performance of the SC-LSM are proposed. Following, the 3-D analytical representation of forces and stiffness are acquired by compound circuit of primary current and Fourier analysis of secondary field, contain suspension performance, guidance performance, rolling torque and stiffness, propulsion and magnetic drag force, time-domain electromagnetic forces, etc. Third, the forces and stiffness performance on one SC-LSM is calculated with various horizontal deviation and rolling transient postures of maglev train through the novel analytical model and finite-element model. Finally, the rationality on the 3-D analytical method is proved though the experimental test value.