摘要
讨论了CE102测试与400 Hz屏蔽室滤波器之间的问题,部分400 Hz屏蔽室滤波器不能把经过滤波器的电磁干扰抑制到允许的电平范围内,导致屏蔽室内传导环境电平不满足测试要求,使得CE102的测试结果出现较大误差;另一方面,400 Hz屏蔽室滤波器还会造成供电电压升高,影响CE102的测试结果。结合实际案例,分析得出多级滤波中的电容是电压抬升的主要原因,并给出了解决问题的建议。
The problems concerning CE102 test and shielding room fiher for 400 Hz power supply are discussed. For example, the conducted emission environmental level can not meet the requirements, because the shielding room filter for 400 Hz power supply are not able to control electromagnetic interference voltage within the confines of allowable level. The filter also leads to power supply voltage rise, which may greatly affects test results. Finally, the countermeasures are suggested based on practical cases.
关键词
400Hz中频电源
屏蔽室滤波器
传导环境电平
电压升高
CE102
intermediate frequency power supply of 400 Hz
shielding room filter
conducted emission environmental level
powersupply voltage rise
CE102
