Study and optimized design of contactless power transformer for high speed maglev train

This paper investigates factors influencing coupling ability of ironless flat winding separable transformer which could work for the contactless power supply system of the high speed maglev train. Basing on 3D finite element method (FEM), the coupling ability to geometrical sizes such as coil length and width, height of air gap and the horizontal displacement of the secondary coils is given. Effect of high frequency on the contactless power supply system is also taken into consideration. The work of this paper provides foundation for the optimized design of high coupling ability ironless flat winding separable transformer.