时域测量技术分析供电网络中周期性短时干扰

2016 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2016-05-20 DOI:10.1109/APEMC.2016.7523034

I. Setiawan, C. Keyer, M. Azpúrua, Ferran Silva, F. Leferink

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引用次数: 5

摘要

由连接到供电网络的设备引起的传导干扰，以及这些网络中的干扰，通常使用(慢速)扫描调谐电磁干扰(EMI)接收器来测量。在三相设置中分离共模和差模的电压传感器与8通道数字示波器相结合，允许通过三相加中性的许多样品测量电压和电流。使用快速傅立叶变换进行数据处理，可以生成传统的振幅作为频率函数的图，类似于使用传统EMI接收器获得的图。但是，利用所提出的测量技术，也可以在瀑布图中表示时频图。时域测量技术表明，传导噪声为循环短时干扰。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Time-domain measurement technique to analyze cyclic short-time interference in power supply networks

Conducted interference caused by equipment connected to power supply networks, and the interference in these networks, is conventionally measured using (slow) scanning tuned electromagnetic interference (EMI) receivers. A voltage sensor which separates common mode and differential mode in a three-phase setup combined with a 8-channel digital oscilloscope allows measuring voltage and current via many samples in the three phases plus neutral. Using fast fourier transform for the data processing the conventional amplitude-as-function-of-frequency plots, similar to what would be obtained using conventional EMI receivers, can be generated. But with the presented measurement technique it is also possible to present time-frequency plots in a waterfall diagram. The time - domain measurement technique shows that the conducted noise is cyclic short-time interference.

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2016 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)

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