Research on Simulation and Test Verification of Cable Conducted Interference Based on FDTD

Rectifier bridges and inverter bridge systems in high-power power equipment are usually sources of conduction interference on sensitive equipment. In order to effectively estimate the interference signal from the cable coupling to the sensitive equipment, based on the multiconductor transmission line theory, a cable transmission line model that can reflect the distribution parameters between the lines is established, and the finite difference time domain method and the discrete multi-conductor transmission line cable equation are studied to solve the iterative equations of the beginning and the end are used to obtain the interference value at the sensitive equipment. Finally, the correctness of the method is proved by experimental simulation.