發(fā)布時(shí)間：2018-12-15 02:15

【摘要】：近年來,隨著高頻電子器件不斷進(jìn)步和持續(xù)發(fā)展,電力線纜上高頻電磁干擾問題日趨突出,設(shè)計(jì)性能較好的濾波器成為亟待解決的問題。本文針對(duì)工程實(shí)踐中的EMI整改問題,區(qū)別于先前對(duì)傳導(dǎo)電磁騷擾與輻射電磁騷擾的單獨(dú)研究,提出了噪聲混合一體化抑制的思路,并對(duì)電源線纜一體化傳導(dǎo)/輻射EMI濾波器展開了理論分析與應(yīng)用研究。(1)對(duì)電源線纜一體化傳導(dǎo)/輻射EMI濾波器的理論基礎(chǔ)進(jìn)行了研究。本文通過對(duì)傳導(dǎo)電磁干擾和輻射電磁干擾模型的研究,得出兩種電磁干擾的抑制機(jī)理。同時(shí)將復(fù)雜電子設(shè)備中的線纜分為交流電源線纜、直流電源線纜、數(shù)字控制線纜、傳感器線纜,得出四種線纜的輻射噪聲機(jī)理,建立了相應(yīng)的遠(yuǎn)場(chǎng)輻射噪聲模型。由于耦合效應(yīng),各種電纜的輻射噪聲疊加于交流電纜線路中,因此交流電纜為有效且易行的整改點(diǎn),成為濾波器主要濾波位置。(2)對(duì)電源線纜一體化傳導(dǎo)/輻射EMI濾波器進(jìn)行結(jié)構(gòu)設(shè)計(jì)。在普通傳導(dǎo)濾波器的基礎(chǔ)上增加輻射濾波器,并將輻射濾波器的噪聲抑制頻段,劃分為低頻噪聲段、中頻噪聲段、高頻噪聲段三個(gè)部分,使用電容電感、磁環(huán)、金屬管套對(duì)三個(gè)頻段分別進(jìn)行噪聲抑制。(3)對(duì)電源線纜一體化傳導(dǎo)/輻射EMI濾波器經(jīng)行綜合應(yīng)用研究,以三款實(shí)際醫(yī)療電子設(shè)備為研究對(duì)象,利用本文提出的方法設(shè)計(jì),對(duì)其電磁干擾問題進(jìn)行了分析和抑制。在鈉硫儲(chǔ)能變流器通訊模塊中安裝電容濾波;在吸痰器中安裝電感電容及磁環(huán)組成的濾波器,在經(jīng)絡(luò)導(dǎo)平治療儀上安裝電容、磁環(huán)、金屬套管。詳細(xì)論述了傳導(dǎo)騷擾和輻射騷擾的分析和抑制過程,檢測(cè)結(jié)果滿足標(biāo)準(zhǔn)限值要求,驗(yàn)證了噪聲混合一體化抑制思路的可行性,為今后傳導(dǎo)電磁干擾噪聲抑制的工程應(yīng)用提供理論和實(shí)踐依據(jù)。
[Abstract]:In recent years, with the continuous progress and continuous development of high-frequency electronic devices, the problem of high-frequency electromagnetic interference (HF-EMI) on power cables has become increasingly prominent, and the design of filters with better performance has become an urgent problem to be solved. Aiming at the problem of EMI rectification in engineering practice, different from the previous research on conducting electromagnetic disturbance and radiation electromagnetic disturbance, this paper puts forward the idea of noise mixed integration suppression. The theoretical analysis and application of the integrated power cable conduction / radiation EMI filter are carried out. (1) the theoretical basis of the power cable integrated conduction / radiation EMI filter is studied. In this paper, the suppression mechanisms of two kinds of electromagnetic interference are obtained by studying the models of conducting electromagnetic interference and radiation electromagnetic interference. At the same time, the cable in complex electronic equipment is divided into AC power cable, DC power cable, digital control cable and sensor cable. The radiation noise mechanism of four kinds of cable is obtained, and the corresponding far-field radiation noise model is established. Because of the coupling effect, the radiation noise of all kinds of cables is superimposed on the AC cable line, so the AC cable is an effective and easy rectification point. It is the main filter position. (2) structural design of integrated conduction / radiation EMI filter with power cable. The radiation filter is added to the common conduction filter, and the noise suppression frequency band of the radiation filter is divided into three parts: the low frequency noise section, the intermediate frequency noise section, the high frequency noise section, the capacitor inductance, the magnetic ring, The metal tube sleeve carries on the noise suppression to the three frequency bands separately. (3) to the power cable integration conduction / radiation EMI filter meridian synthesis application research, takes three actual medical electronic equipment as the research object, uses the method proposed in this paper design, The electromagnetic interference is analyzed and suppressed. The capacitor filter is installed in the communication module of the sodium sulfur energy storage converter, the filter composed of inductance capacitance and magnetic ring is installed in the sputum suction device, and the capacitance, magnetic ring and metal casing are installed on the meridian conduction level therapeutic instrument. The analysis and suppression process of conducting disturbance and radiation disturbance are discussed in detail. The detection results meet the requirements of the standard limit value and verify the feasibility of the idea of integrated noise suppression. It provides a theoretical and practical basis for the engineering application of EMI suppression in the future.
【學(xué)位授予單位】：南京師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN03;TN713

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 徐晨琛;王世山;;計(jì)及混合噪聲的集成式EMI濾波器設(shè)計(jì)[J];電工技術(shù)學(xué)報(bào);2015年24期

2 王世山;宋崢;;反射損耗最大化的EMI濾波器端口阻抗失配網(wǎng)絡(luò)設(shè)計(jì)[J];北京交通大學(xué)學(xué)報(bào);2015年05期

3 趙陽(yáng);夏歡;邱曉暉;宋百通;陳雪麗;;基于獨(dú)立分量分析算法的醫(yī)療電子設(shè)備輻射電磁干擾EMI噪聲分析方法[J];電工技術(shù)學(xué)報(bào);2015年17期

4 張佳佳;張逸成;韋莉;葉尚斌;姚勇濤;;基于插入損耗的噪聲源阻抗修正計(jì)算方法[J];電工技術(shù)學(xué)報(bào);2015年04期

5 胡寅秋;;多功能自助終端設(shè)備電信端口傳導(dǎo)共模騷擾電壓干擾整改實(shí)例[J];電子質(zhì)量;2014年10期

6 和軍平;馮巨標(biāo);李遠(yuǎn)航;;DC/DC開關(guān)電源對(duì)低壓差分信號(hào)線干擾模型研究[J];電機(jī)與控制學(xué)報(bào);2014年09期

7 錢照明;;電力電子器件及其應(yīng)用的現(xiàn)狀和發(fā)展[J];變頻器世界;2014年09期

8 陳道煉;張杰;陳艷慧;;高頻環(huán)節(jié)電力電子變換技術(shù)的發(fā)展與現(xiàn)狀[J];電力電子技術(shù);2014年06期

9 陳慶彬;陳為;;開關(guān)電源中變壓器共模傳導(dǎo)噪聲抑制能力的評(píng)估方法[J];中國(guó)電機(jī)工程學(xué)報(bào);2012年18期

10 封志明;趙品彰;趙波;董穎華;;開關(guān)電源變換器傳導(dǎo)電磁干擾噪聲源內(nèi)阻抗優(yōu)化提取方法[J];數(shù)據(jù)采集與處理;2012年02期

相關(guān)博士學(xué)位論文 前1條

1 陳恒林;EMI濾波器高頻建�！�寄生效應(yīng)研究[D];浙江大學(xué);2007年

相關(guān)碩士學(xué)位論文 前3條

1 詹楠楠;電磁敏感度測(cè)試的大電流注入技術(shù)研究[D];電子科技大學(xué);2011年

2 崔永生;EMI濾波器寄生參數(shù)消除技術(shù)的研究[D];南京航空航天大學(xué);2010年

3 王麗;EMI電源濾波器的設(shè)計(jì)和研究[D];北京交通大學(xué);2007年

，

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