MAGNETIC FIELDS SHIELDING ANALYSIS OF LIGHT RAIL TRANSIT SYSTEM

초록

This paper presents the magnetic fields shielding properties of the light rail transit (LRT) system which are produced by the ripple-shaped currents in the power lines. To analyze these properties, the equivalent circuit model of the DC power supply system at the light rail transit system was induced by MATLAB-SIMULINK, and with the calculated results of the ripple-shaped currents, the magnetic fields shielding properties of the light rail transit were analyzed. The magnetic fields produced by the ripple-shaped current of the DC power supply systems are well shielded by the aluminum made body of the KRRI (Korea Railroad Research Institute) LRT system.