臺灣博碩士論文加值系統

如今的電源供應器電子產品都以符合小型化、高效率、高精度、高信賴度、及高反應性等為目標，因為電路元件的分佈密度過高、將使電路的體積大大的縮小，然而電路變得愈精巧，則會有更多的元件擠在很小的空間當中，增加了干擾的機會，其中以電磁干擾(EMI)最令人感到困擾，對策問題上考量，長久以來一直是電子裝備及系統在研發設計上的一大盲點，因為EMI所牽涉的因素繁多，處理時所需的專業知識較廣的關係，時時無法突破瓶頸。然而由於科技產業中高度競爭，新產品的生命週期越來越短，使得我們不得不尋求一個快速解決EMI問題的方式，來縮短產品的研發時間，以短期的研發去搶佔市場先機。EMI的抑制對象主要分為輻射性與傳導性電磁干擾，而傳導性EMI，它是經由電源導線來傳遞雜訊的，故連接在同一端電力系統的電氣裝置所產生的EMI會經由電源線而彼此相互干擾。為對於傳導性EMI作有效的管制，首先需要對於電子元件所產生的傳導性EMI作有效的量測，再依據結果選擇適當的元件值設計濾波器來加以防治，本文是以主要探討傳導性EMI 量測系統的架構及原理去做為論文的研究。

The Power supply device electronic products at the today are all by according with miniaturization , high efficiency , high accuracy, trusting degree, and high response to system etc. as the goal high, dwindling greatly of the case in the making manufactory process of the circuit component too high in density, In fact the circuit have more exquisite become requirement more components will be crowded in very small space, has increased the chance interfered and noise, among them by Electromagnetic Interference (EMI) issue making people countermeasure find out the solution for the electromagnetic noise most, consider on the root cause question, it has been that electronics and system are being researched and developed and designing a big blind spot that is going to all the time for a long time, because EMI factor involved is various, the necessary relation with wider professional knowledge while dealing with as soon as. But because highly compete in the scientific and technological industry, the life cycle of the new products is shorter and shorter loop, make us have to seek one and solve EMI problem way fast, to shorten the research and development time of the products to seize the market first chance with short-term research and development. High competition industry develops in the scientific and technological skill. The life cycle of the new products is shorter and shorter. We have to seek one and solve EMI problem by the way fast, to shorten the research and development time of the products. Take the market first channel with short-term research and development. The restrain EMI filter with the conducting electromagnetic noise and radiation noise kinds of the divides, radiation EMI noise is transmitted path by the open space directly, can not be passed any transmission medium. So just only generally solve in shielding and grounding etc the ways. Conducting EMI noise, it transmitted miscellaneous news path on the power wire. Connect between will interfere each other with electric EMI produced of devices that power system each other path on the cable. For conducting EMI noise do effective control at first. We need to make effective test to examine to conducting EMI noise that the electronic element constituent. Choose component parts to design filter to prevent product focus wave noise result. This text regards probing into the conducting EMI amount and examining systematic structure and principle to do the studying of the thesis mainly subject.

誌謝 I
論文摘要 II
Abstract III
符號說明 IV
目錄 V
圖目錄 VI
表目錄 VIII
第一章　緒論 1
１．１研究動機 1
１．２相關研究 2
１．３電路設計與ＥＭＩ分析 5
第二章　理論回顧與分析方法 6
２．１量測原始共模和差模雜訊方法 6
２．２分析方法 11
２．３EMI 濾波器的量測原理與雜訊分離法： 16
２．３．１ＬＩＳＮ的原理與功用 16
２．３．２雜訊分離的方法（ＤＭＲＮ）和（ＤＭＮＤＣ） 18
２．４二階Ｌ／Ｃ補償理論轉成應用軟體工具分析 21
第三章　軟體運用實測與驗證 29
３．１軟體工具應用配合在電源供應器實測之說明 29
３．２ＥＭＩ實測（一）２５０Ｗ(半橋式)電源供應器 33
３．３ＥＭＩ實測（二）３５０Ｗ(半橋式)電源供應器 39
３．４ＥＭＩ實測（三）４５０Ｗ(全橋式)電源供應器 45
第四章　結果分析與未來研究方向 52
４．１頻譜分析儀量測時誤差分析和降低電磁雜訊干擾 52
４．２PFC 的線路分析對EMI雜訊模型建構在(輻射性) 55
４．３結論與未來研究方向 63
附錄 65
參考文獻 74
中英文對照說明 75
個人資料 76

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