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Measurements of High-Frequency (2–150 kHz) Distortion in Low-Voltage Networks

机译:低压网络中高频(2–150 kHz)失真的测量

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摘要

This paper presents different methods to describe voltage and current distortion in the frequency range 2 to 150 kHz. The time–frequency domain was shown to give additional information next to the time- and frequency-domain representations. Measurements of different devices and at different locations showed remnants of the switching frequency of the power electronics as well as lower frequency oscillations around the current zero crossing to be present in voltage and current. The voltage distortion is shown to vary a lot during the day and between locations.
机译:本文提出了描述2至150 kHz频率范围内电压和电流失真的不同方法。显示时频域可以在时域和频域表示形式旁边提供其他信息。对不同设备和不同位置的测量结果表明,电力电子设备的开关频率存在残余,并且电压和电流中存在电流零交叉点附近的低频振荡。结果表明,白天和不同地点之间的电压失真变化很大。

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