Simulation Method for Inverter Common-mode Noise at the Whole Train Level

Electromagnetic common-mode noise current generated by inverter switching makes a huge loop in car bodies and rails and might cause interference with on-board equipment. We propose a simulation method for the approximate transmission line for inverter common-mode noise to simulate such a large-scale model within a reasonable time. Our simulation results agree quite well with the hybrid simulation results up to 5 MHz, including the major transponder signal frequencies.