城市轨道交通车辆应答器传输模块电磁干扰原因及其应对措施
王博杨其林孔宴伟邸峰朱真宗
Electromagnetic Interference of Urban Rail Vehicle Balise Transmission Module and Coping Strategies
WANG BoYANG QilinKONG YanweiDI FengZHU Zhenzong
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作者信息:中车青岛四方车辆研究所有限公司，266031，青岛
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Affiliation:CRRC Qingdao Sifang Rolling Stock Research Institute Co.,Ltd., 266031, Qingdao, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.11.018
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中图分类号/CLCN:U285.28
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栏目/Col:研究报告
摘要:
目的：实际运营中经常出现车载变流系统对车载BTM（应答器传输模块）天线产生电磁干扰、导致BTM天线无法正常工作的情况，需找出电磁干扰的原因，并制定干扰抑制措施。方法：先对干扰源进行定位，确定其干扰源是车载变流系统；阐述了变流系统产生电磁干扰的机理和传输路径，初步分析了变流系统产生的共模干扰分量与差模干扰分量对BTM天线正常工作产生的影响。建立了简化电路模型和理论计算公式，给出了所增设器件的参数范围。提出了抑制变流系统产生差模干扰和共模干扰的三个方案，对三个方案下变流系统对外端口产生的干扰幅值进行测试。结果及结论：增加共模干扰和差模干扰信号的流通路径后，实现了干扰信号在变流系统内的循环流通，减少了对变流系统外设备的传导干扰。方案三可以有效解决BTM天线受扰问题。
Abstracts:
Objective: In rail vehicle operation, there is often electromagnetic interference from the vehicle mounted converter system with the BTM (Balise Transmission Module) antenna, resulting in its malfunction. It is necessary to identify the causes of the electromagnetic interference to develop interference suppressing measures. Method: By locating the interference source, the vehicle mounted converter system is identified as the root cause. The mechanism and transmission path of electromagnetic interference generated by the converter system is explained, and the impact of common\|mode interference and differential\|mode interference generated by the converter system on the operation of the BTM antenna is preliminarily analyzed. Then, a simplified circuit model and theoretical calculation formula are established, and the parameter range of adding components is provided. Three schemes for suppressing common\|mode interference and differential\|mode interference from the converter system are proposed, the external port amplitudes of these three schemes are tested. Result &Conclusion: By increasing the flow paths of common\|mode interference and differential\|mode interference signals, the internal circulation of interference signals within the converter system is achieved, reducing conducted interference to external devices of the converter system. The third scheme can effectively solve the interference problem with the BTM antenna.
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