Conducted emission analysis of DC-DC converters and proper selection of pre-filtering stage

Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST) Pub Date : 1900-01-01 DOI:10.1109/IBCAST.2013.6512179

J. Yousaf, Muhammad Amin, S. Iqbal, H. Durrani, M. K. Amin

{"title":"Conducted emission analysis of DC-DC converters and proper selection of pre-filtering stage","authors":"J. Yousaf, Muhammad Amin, S. Iqbal, H. Durrani, M. K. Amin","doi":"10.1109/IBCAST.2013.6512179","DOIUrl":null,"url":null,"abstract":"At low frequencies, DC-DC converter is one of the noisiest components that can adversely affect conducted emission (CE) measurements. Since DC-DC converter does the switching at a frequency that is proportional to the load, there is a strong component of interference signal in a certain frequency band that depends upon the load. It not only includes the fundamental frequency but also its harmonics. The dynamic range of the amplitude and frequency of this interference signal is important to analyze for the design of proper pre-filtering stage. In this paper, we shall present the experimental measurements of conducted emissions for DC-DC converter with and without using the filter and would show the importance of proper filter design to bring the conducted emissions within the envelope of MILSTD-461F. The measurements indicate that without filter there is a strong interference signal at the fundamental frequency and its harmonics which are well above the threshold value. As the properly designed filter is inserted, the conducted emissions fall within the envelope of MIL STD-461F.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IBCAST.2013.6512179","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 2

Abstract

At low frequencies, DC-DC converter is one of the noisiest components that can adversely affect conducted emission (CE) measurements. Since DC-DC converter does the switching at a frequency that is proportional to the load, there is a strong component of interference signal in a certain frequency band that depends upon the load. It not only includes the fundamental frequency but also its harmonics. The dynamic range of the amplitude and frequency of this interference signal is important to analyze for the design of proper pre-filtering stage. In this paper, we shall present the experimental measurements of conducted emissions for DC-DC converter with and without using the filter and would show the importance of proper filter design to bring the conducted emissions within the envelope of MILSTD-461F. The measurements indicate that without filter there is a strong interference signal at the fundamental frequency and its harmonics which are well above the threshold value. As the properly designed filter is inserted, the conducted emissions fall within the envelope of MIL STD-461F.

查看原文本刊更多论文

对DC-DC变换器的发射特性进行了分析，正确选择了预滤波级

在低频率下，DC-DC变换器是噪声最大的元件之一，会对传导发射(CE)测量产生不利影响。由于DC-DC变换器在与负载成正比的频率下进行开关，因此在某一特定频段内存在强干扰信号，该干扰信号取决于负载。它不仅包括基频，还包括其谐波。分析该干扰信号的幅值和频率的动态范围对设计合适的预滤波级具有重要意义。在本文中，我们将介绍使用和不使用滤波器的DC-DC变换器的传导辐射的实验测量，并将显示适当的滤波器设计的重要性，以使传导辐射在MILSTD-461F的包络内。测量结果表明，不加滤波器时，在基频处存在强干扰信号，其谐波远高于阈值。当适当设计的过滤器插入时，传导辐射落在MIL STD-461F的包络内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)

自引率

0.00%

发文量