新型高速试验列车高压室电磁屏蔽研究

On Electromagnetic Interference Shielding for High-voltage Chamber of the Test Train

新型高速试验列车高压室置于车厢内部后,其高压设备对乘客身体健康及对周围其它设备的正常工作产生影响。介绍了高压室的结构和特点,分析了车内设备所产生辐射电磁场的限定参数及相关标准,对高压室在不同频率下产生的电磁场进行了理论估算。基于此,采用Feko软件对高压室电磁屏蔽进行建模和仿真,评估了相应的屏蔽效能。仿真结果表明,所提出的电磁屏蔽方案取得了预期的效果,列车舱室内的磁场强度被控制在相关标准的限值之下。

When the high-voltage chamber is arranged in the test train carriages, the high voltage equipments in- stalled in the chamber would affect the passengers health and the normal working of other peripheral equipments in- side the train. In this paper, the structure and characteristics of the high-voltage chamber are introduced, the limitation and related standards of the electromagnetic field caused by the vehicle equipments are analyzed. Then, the value of the electromagnetic field generated by the high-voltage cham- ber at different frequencies is estimated theoretically. On thisbasis, the electromagnetic interference shielding of the high-voltage chamber is modeled and simulated by using Fe- ko software, the effectiveness of corresponding shielding is then evaluated. The simulation results show that the pro- posed electromagnetic interference shielding scheme has a- chieved the expected effect： the magnetic field strength in the train cabins is controlled under the relevant standard limitation.