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Contactless transformer is the key part of the inductive contactless power transfer (ICPT) system. In this paper, a high coupling coefficient contactless transformer is proposed with asymmetric trapezoidal shape cores. With 3D finite element methods (FEM), this paper calculated coupling coefficients of the transformer in different inner lateral side distances and bending angles of the magnetic core...
Contactless transformer is a key part of the inductive contactless power transfer (ICPT) system. In this paper, a contactless transformer is proposed with spoon shape magnetic cores. With 3D finite element methods (FEM), this paper calculates coupling coefficients of the transformer at different inner lateral side distances and end bending angles and extension lengths of the magnetic cores, obtains...
Contactless transformer is the key part of the inductive power transfer (IPT) system that can realize safe electric-energy supply for mobile devices. This paper proposes a novel contactless transformer structure with trapezoidal magnet core, which can be applied to movable vehicle such as high-speed maglev vehicle IPT system. The inductances of primary and secondary windings of different core structures...
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...
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