Electromagnetic field analysis and dynamic modeling of force for motor in Maglev train

Finite element model of a electromagnet module was established on the dimensions of long stator linear synchronous in TR08 Maglev vehicle in order to study the performance of the motor. The distribution of the electromagnetic field in the levitation air gap was analyzed in detail, then the curve of propulsive force and levitation force were obtained under different spans. The force variation trend were highlighted along with the armature current, excitation current, air gap and position, and the experiential models of propulsive force and levitation force was derived by Global optimization algorithm and conjugate-gradient method. It was found that motor performance was better based on the dimensions of TR08. The simulation results proved that the proposed experiential models are accurate and the average error is less than 1%.