A Novel Superconducting Linear Synchronous Motor for High-Speed Propulsion System: Topology, Optimization, and Validation

To meet the requirements of high thrust, low electromagnetic disturbance of both the overall mover and the local superconducting coil (SC) of superconducting linear synchronous motors (SLSMs) for the high-speed propulsion system such as electromagnetic sled and maglev launch system, a topology of SLSM with double-layered misaligned centralized windings (DLMCWs) is proposed in this article. The harmonic suppression mechanism of the SLSM with DLMCWs is introduced. An analytical model is established based on the line element equivalent model to calculate the comprehensive dynamic electromagnetic characteristics including back-electromotive force (back EMF), overall and local six degrees of freedom (6-DOF) electromagnetic loads of the SLSM. A multiobjective optimization process is carried out to complete the design of the SLSM. The characteristics of the designed DLMCW SLSM are analyzed and the benefits of the high thrust and low disturbance capacity are demonstrated. The accuracy of the analytical model and the capability to suppress electromagnetic vibration in superconducting magnets are verified via experimental tests.