The operation mechanism of high-speed EMU is complex, which puts forward higher requirements for electromagnetic compatibility. Based on the influence of electromagnetic environment on high-speed EMU, the simulation system is composed of sensor signal line and high-voltage transmission line under the vehicle, and the simulation analysis of electromagnetic compatibility technology is carried out from the factors of crosstalk voltage and crosstalk coupling coefficient. The analysis results show that the electromagnetic interference mainly occurs above 10 MHz, among which the maximum is near 41 MHz, and increases with the increase of signal line length. The above technical parameters are of reference significance to the running safety of high-speed EMU and high-speed railway operation.
High-speed EMU is a set of network communication, high voltage, frequency conversion, computer control technology in one of the system equipment, including a variety of cable harnesses and electronic equipment, not only contains high-power radiation signal sources, but also high-sensitivity communication equipment and sensors. In the space where strong and weak electrical signals are interwoven, the electromagnetic compatibility requirements of high-speed EMU are higher, so it is very important to carry out targeted technical analysis.