IEC标准61000-3-2实际系统中的谐波电流发射限值:需要考虑负载水平和衰减效应

2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262) Pub Date : 2001-07-15 DOI:10.1109/PESS.2001.970026

A. Prudenzi, U. Grasselli, R. Lamedica

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引用次数: 31

摘要

本文讨论了国际电工委员会(IEC)标准61000-3-2对电流吸收小于或等于16安培的器具规定的谐波发射限值。为此，我们将注意力集中在个人电脑(PC)上，作为标准规定的宽非线性器具D类的一个样本。一些实验室对低压电网供电的PC机的测试结果表明:(1)在实际系统中运行的PC机超过了以mA/W表示的EEC限值;(2)尽管较低的负载条件会产生较高的比(mA/W)谐波含量，但IEC限值是针对标称负载规定的。这些问题是通过在实验室进行的测试活动来评估的。为此，在实验室中实现了一种实验布局，提供了对可变阻抗系统供电的PC机的谐波监测。

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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IEC Std. 61000-3-2 harmonic current emission limits in practical systems: need of considering loading level and attenuation effects

The paper deals with the harmonic emission limits provided by International Electrotechnical Commission (IEC) Std. 61000-3-2 for appliances with current absorption less than or equal to 16 Amps. To this aim attention is focussed on personal computers (PC) as a sample of the wide nonlinear appliance class D as regulated by the Standard. Results of some laboratory tests on a PC supplied from the low voltage (LV) grid show that: (1) EEC limits expressed to mA/W are exceeded by actual PCs operating In practical systems; and (2) the IEC limits are stated for nominal load even though lower loading conditions produce higher specific (mA/W) harmonic contents. The problems are assessed by means of a testing activity performed in the laboratory. To this aim, an experimental layout providing harmonic monitoring of a PC supplied from a system with variable impedance has been implemented in the laboratory.

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2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262)

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