115 V交流电源的底噪验证  

Research on Background Noise Verification of 115 V AC Power Supply

作　　者：刘超 Liu Chao

机构地区：[1]上海航空电器有限公司

出　　处：《安全与电磁兼容》2022年第6期76-82,共7页Safety & EMC

摘　　要：为了更好地评估115 V交流电源电磁兼容特性,解决其供电时电源底噪验证过程中的各种问题,该文首先阐述了GJB 151B-2013中CE101限值选取原则,分析了最严苛的限值选取和放宽方法。其次,介绍了电源滤波器的方案选型情况,并通过CE101和CE102两项验证选型方案结果,优选了电源滤波器方案。最后,对比分析了射频传导发射试验未能满足限值要求的原因。解决了底噪验证难、项目验收难和实验室使用难等问题,为电磁兼容实验室解决交流电源底噪验证问题提供了一定的参考。In order to better evaluate the electromagnetic compatibility characteristics of 115 V AC power supply and solve various problems in the process of verification of background noise,this paper first expounded the principle of the selection of CE101 limit in GJB 151B-2013,and analyzed the most stringent selection and relaxation method of the limit.Secondly,the selection of the scheme of the power filter was introduced,and the filter scheme was preferred through the verification results of CE101 and CE102.Finally,the reasons why the radio-frequency conduction and emission experiment failed to meet the requirements of the limit was analyzed.It solves the problems of low noise verification,project acceptance and laboratory use,and provides a reference for EMC laboratories to solve the low noise verification problem of AC power supply.

关 键 词：限值水平 插入损耗 电磁兼容 射频电流 

分 类 号：V242.2[航空宇航科学与技术—飞行器设计]