Research on the Influence of Vehicle Body on the Characteristics of Vehicle Radiated Emission

The electromagnetic environment of the high-speed railway is very important to the high-speed railway operating system itself and the surrounding sensitive facilities. The electromagnetic environment directly affects the reliability of the electronic and electrical systems in this environment and the safety of high-speed rail transportation. Radiation emission is one of the important factors determining the electromagnetic environment of high-speed railways. Therefore, the overall vehicle radiation emission level of high-speed EMUs is not only an important indicator for evaluating the electromagnetic compatibility performance of high-speed EMUs, but also one of the key performance indicators that users must pay most attention to when they are exported. This paper will start with the analysis of the main influencing factors of the vehicle's radiated emissions, focusing on the influencing factors that cause the vehicle's radiated emissions to exceed the low frequency standard-the radiation emission current characteristics of the high-speed rail vehicle.