3-D Analysis of Electromagnetic Forces of a Real-Scale Superconducting Linear Synchronous Motor for EDS Train

The superconducting linear synchronous motor (LSM) is considered as one of the most suitable propulsion approaches for the electrodynamic suspension (EDS) train whose operating speed exceeding 600 km/h has been realized. The performance of the superconducting LSM is directly influenced by the multi-degree-of-freedom motion of EDS train. Therefore, it is essential to carry out the characteristic analyses of superconducting LSM to verify its fitness in EDS system. In this paper, the characteristic analysis of superconducting LSM was implemented based on a real-scale 3-D finite element model. The variation trends of thrust force, levitation force and guidance force are investigated to confirm the stability of EDS train in consideration of both the lateral and vertical displacements. The obtained results show that the electromagnetic force of superconducting LSM can provide the excellent thrust force for EDS train, enhance the stability in lateral direction and worsen the stability in vertical direction of EDS train. Those results will be the significant guidance for promoting the application of superconducting LSM in EDS train.