高速列车电磁发射问题分析及解决措施

Analysis and Solution of Electromagnetic Emission of High-speed EMU

为了解决高速列车车辆在型式试验过程中在固定频段内出现的电磁发射问题,对车辆牵引传动系统电气原理系统进行分解,从变流器开关器件、线缆传输特性的原理入手分析150 kHz^1.15 MHz以及200 MHz^1GHz频段内发生的射频发射原理,提出发射问题解决方案并对车辆进行整改,实现射频发射满足标准要求。

In order to solve the problem of electromagnetic emission problem of high-speed EMU in the fixed frequency band during the type test, the electrical principle system of vehicle traction drive system was decomposed. The radio frequency emission mechanism occurring in the frequency band of 150 kHz^1.15 MHz and 200 MHz^1 GHz was analyzed from the principle of converter switching devices and transmission characteristics of cables. Solutions to the problem of emission and vehicle modification were carried out to achieve radio frequency emission meet the requirements of the standard.