Analysis of crosstalk between cables on board in high speed EMUs

Due to intensive cable arrangement in high speed EMUs, the work on crosstalk coupling between power lines to temperature sensor lines with groove is quite important. According to a specific cable arrangement on board in EMU, this paper deals with the influence of structure of groove, intersection angle and impedance of lines by electromagnetic simulation software which was based on Finite Difference Time Domain (FDTD). In the light of actual situation, using 110V sinusoidal voltage as excitation source of power line. The results suggested that the metal structure of groove can reduce the maximum crosstalk 13dB, the cover and clapboard of groove can also reduce some crosstalk. In addition, the crosstalk value declines with the intersection angle increased and impedance of cables decreased.