Superconducting electrodynamic suspension(EDS)has the advantages of self-stability,high efficiency and large working air gap,and is one of the main options for high-speed maglev trains.In this paper,the double-layer winding linear synchronous motor used in EDS train is investigated.First,the thrust expression of the motor is derived by harmonic analysis method and the cause of thrust fluctuation is analyzed.Then,three-dimensional finite element method is used to study the effect of motor structure parameters on the thrust and fluctuation,and the selection criteria of main structure parameters are defined.According to the spatial attenuation characteristic of magnetic field,a matching design method of inner and outer layer winding is proposed.Then,based on the above research,the size parameters of an experimental prototype are determined,and the electromagnetic performance of the prototype is simulated and analyzed.Finally,the experimental prototype is developed,and the effectiveness of the design method and theoretical analysis was verified by measured thrust force.
关键词
直线电机/超导电机/双层绕组/推力波动/优化设计/电动磁悬浮
Key words
linear motor/superconducting motor/double-layer winding/thrust ripple/optimization design/electrodynamic suspension(EDS)
维普
万方数据