Three dimensional magnetic field computation inside a high speed train with a.c. electrification

This work deals with the characterization of the extremely low frequency (ELF) magnetic field inside the new Italian high speed train with alternate current (a.c.) electrification, which will be realized in the next future. In the proposed model the magnetic field sources are assumed to be the 50 Hz currents flowing in the conductors of the railway line, which are calculated by a circuit analysis of the electrified traction line. The magnetic field in a railway car is then calculated by a CAD field simulator. The computed results in two-dimensional (2D) and three-dimensional (3D) configurations are compared and discussed. The calculated field level are also compared with the magnetic field measured inside an existent European high speed train with a.c. electrification.