Thermal Analysis of Fast-Charger Contactless Power Transfer for Electric Buses

Inductive power transfer (IPT) is widely used in many applications, in particular for the electrification of transportation. Due to the necessity to reduce the weight and the volume of the IPT system, in particular for on-board application, the use of magnetic and thermal models become necessary. The paper provides a simplified dynamic model able to obtain a fast and accurate thermal modelling that can be used for the coils used in the power transfer system. The attention is mainly focused on the receiver coil that is on-board the vehicle. Numerical simulation carried out with finite element analysis and Matlab are carried out to verify the possibility of use the proposed approach.