摘  要：利用Ansys单元生死技术和磁接触单元，提出了EMS型磁悬浮列车直线同步电机时变电磁场瞬态分析的计算模型。以TR08磁浮列车直线电机为研究对象，分析了车速430 km/h，转子移动半个周期，一个定子极距工况下，气隙磁场的瞬态变化和牵引力、悬浮力的波动情况。得出在半个周期内，悬浮力和牵引力均存在3倍频波动，但牵引力波动相对幅度较大；电枢电流的相位角对悬浮力和牵引力存在明显影响；功角90°时的气隙合成磁场中，转子直流励磁磁场占有绝对优势等结论。
关键词：磁悬浮列车；直线同步电机；时变电磁场；有限元分析

Abstract: By means of element birth and death feature and magnetic contact pairs of Ansys, a model was designed which be used in calculating transient electromagnetic field of linear synchronous motor of EMS(electric-magnetic suspension) maglev vehicle. Air gap transient magnetic field of linear synchronous motor of TR08 maglev in Shanghai was analyzed at the condition of 430km/h, half circle of rotor movement (0.00216 seconds, the movement distance of rotor is one polar distance of stator).Some results just like below are get. Levitation and propellant force are found 3 times vibration in half circle, the comparative amplitude of propellant force are larger than of levitation force. Phasic angles have great influence on variation of levitation and propellant force. Rotor DC magnetic field has an absolute advantage in composed air gap magnetic field at δ=90°.
Key words: maglev train, linear synchronous motor, transient magnetic field, finite element analysis