Simulation methods and engineering practices of EMI/EMC in railway vehicles

The EMI/EMC risks are increasing in railway vehicles, and computer numerical simulation is an effective way for solving these problems, but there're still some difficulties to be resolved in practical projects. This paper proposed a “Bottom-Up” simulation flow based on ANSYS electromagnetics CAE tools, to solve the EMI/EMC problems in railway vehicles form component level, equipment level to system level. Some practical simulation works were finished for a railway vehicle, including radiation of contact, EMI of cable harness, placement of high voltage components and vehicle body shielding.