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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳德玉(Dan Chen) | |
| dc.contributor.author | Chein-Kuo Shei | en |
| dc.contributor.author | 徐健國 | zh_TW |
| dc.date.accessioned | 2021-06-13T08:24:57Z | - |
| dc.date.available | 2005-07-26 | |
| dc.date.copyright | 2005-07-26 | |
| dc.date.issued | 2005 | |
| dc.date.submitted | 2005-07-15 | |
| dc.identifier.citation | [1] Reduction of power supply EMI emission by switching frequency modulation
Feng Lin; Chen, D.Y.; Power Electronics, IEEE Transactions on Volume 9, Issue 1, Jan. 1994 Page(s):132 - 137 [2] http://cnyack.homestead.com/files/modulation/modfm.htm [3] Carsons’ rule principle on http://fmsystems-inc.com/dev_menu.htm [4] Theoretical and experimental results of power converter frequency modulation Santolaria, A.; Balcells, J.; Gonzalez, D.; IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the] Volume 1, 5-8 Nov. 2002 Page(s):193 - 197 vol.1 [5] Variable frequency switching in power supply EMI-control: an overview Kuisma, M.;Aerospace and Electronic Systems Magazine, IEEE Volume 18, Issue 12, Dec. 2003 Page(s):18 - 22 [6] MAX1703 ,dual 6Bits, 400Msps ADC with on-chip wideband input Ampilfier data sheet, Maker MAXIM [7] LTC3251, 500mA High efficiency Low noise, inductorless step down DC/DC converters data sheet , Maker LINEAR TECH [8] TNY264, TINY SWITCH-Πfamily Enhanced energy Efficiency Low power off-line switcher, maker Power Integrations, Inc., data sheet [9] AD1555, 24 Bit Σ-ΔADC with low noise PGA data sheet， maker ANALOG DEVICES [10] Chaotic switching system using mixed-mode chaotic circuit Kilic, R.; Alci, M.; Circuits and Systems, 2001. MWSCAS 2001. Proceedings of the 44th IEEE 2001 Midwest Symposium on Volume 2, 14-17 Aug. 2001 Page(s):584 - 587 vol.2 [11] Suppressed carrier clock for reduction of electromagnetic radiated emission from high-speed digital system Dong Gun Kam; Jonghoon Kim; Joungho Kim; Piljung Jun; Electromagnetic Compatibility, 2003 IEEE International Symposium on Volume 1, 18-22 Aug. 2003 Page(s):394 - 397 vol.1 [12] Bessel function on web site http://mathworld.wolfram.com/Bessel function of first kind [13] George Kennedy, ‘Electronic Communication System’ (3rd Edition) McGraw-Hill, Singapore, 1984. Reprinted by permission of the publisher. [14] TL494 Pulsed-width-Modulation control circuit data sheet, maker Texas instruments Inc., [15] UC3842AN, current mode PWM controller data sheet ; maker Unitrode [16] NE566N, function generator, maker Philips Semiconductor Linear products. [17] General purpose single Bipolar Timer, maker STMicroelectronics Corp., [18] Advantest Corp., R3131 spectrum analyzer operation manual number FOE-8311227H00. [19] Spread-spectrum technology for commercial applications Magill, D.T.; Natali, F.D.; Edwards, G.P.; Proceedings of the IEEE Volume 82, Issue 4, April 1994 Page(s):572 - 584 [20] Evaluation of switching frequency modulation in EMI emissions reduction applied to power converters Santolaria, A.; Balcells, J.; Gonzalez, D.; Gago, J.; Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE Volume 3, 2-6 Nov. 2003 Page(s):2306 - 2311 Vol.3 [21] A comprehensive analysis method of conducted EMI of an off-line converter He Junping; Jiang Jianguo; Electromagnetic Compatibility, 2002 3rd International Symposium on 21-24 May 2002 Page(s):529 – 532 [22] Delta-sigma converters using frequency-modulated intermediate values Hovin, M.; Olsen, A.; Lande, T.S.; Toumazou, C.; Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on Volume 1, 28 April-3 May 1995 Page(s):175 - 178 vol.1 [23] Squarewave frequency modulation techniques Wilson, B.; Ghassemlooy, F.; Lu Chao; Communications, IEEE Transactions on Volume 43, Issue 234, Feb./March/April 1995 Page(s):1505 - 1512 [24] Random modulated boost converter with improved harmonic spectrum Mihalic, F.; Bezjak, T.; Milanovic, M.; Industrial Electronics, 1997. ISIE '97., Proceedings of the IEEE International Symposium on Volume 2, 7-11 July 1997 Page(s):268 - 273 vol.2 [25] Random-switching control in DC-to-DC converters Tanaka, T.; Ninomiya, T.; Harada, K.; Power Electronics Specialists Conference, 1989. PESC '89 Record., 20th Annual IEEE 26-29 June 1989 Page(s):500 - 507 vol.1 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/36960 | - |
| dc.description.abstract | 使用頻率調變(Frequency modulation)去壓低切換式電源供應器的EMI技術，已行之有年，而且市面上也有產品使用此項技術；有許多調變方法如正弦波、三角波、亂數波以及雙頻調變已有人提出，以上這些方法大都只強調數學上的分析，以及探討頻譜上的展頻形狀，沒有人提出使用此項技術對電路的性能會有何影響。
在本文中將對這些調變方法重新評估，並實際做出硬體以實驗的方式加以驗證，由諸多實驗發現使用頻率調變後，輸出端電壓會有漣波發生，對量測的數據作圖分析，發現頻率調變所造成的擾動，猶如輸入端電源的擾動，做開回路測試，發現與輸入輸出(Audio-suspectibility transfer function)變化相似，但尚未經數學理論驗證，閉回路測試在本文亦有實驗結果討論。 | zh_TW |
| dc.description.abstract | Employing frequency modulation techniques for EMI reduction in switching converters was reported some years ago and the techniques have been gaining some momentum in actual product applications. There were different modulating schemes reported, including sine-wave modulation, triangular wave modulation, random modulation and bi-frequency modulation. However, the results reported were mostly focused on the mathematical analysis of the resulting EMI spectrum without much discussion on the side effects of the schemes on converter performances.
In this thesis, these modulating schemes were reevaluated and compared. A hardware circuit to modulate the converter switching frequency was designed and built for the experiments. From the experiments, it’s observed that significant output voltage ripple can be caused by the modulating schemes. The transfer function between the output ripple and the modulating signal seems to follow the input-to-output (audio susceptibility) transfer function of a converter power stage but this has not been theoretically derived. The effects of feedback control loop gain on the output ripple are also discussed in the thesis. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T08:24:57Z (GMT). No. of bitstreams: 1 ntu-94-R92921072-1.pdf: 1616939 bytes, checksum: ea3ff2568c1ab1ba37b0107c8dca097c (MD5) Previous issue date: 2005 | en |
| dc.description.tableofcontents | 索引
第一章 緒論……………………………….…………….……….1 1-1研究背景與動機………………………………………..…1 1-2 頻率調變的技術來源…………………………….………2 1-3 章節概要與簡述………………………………………….2 第二章 原理概述與簡介各調變技術………………………..….4 2-1 正弦波調變信號…………………………………….……5 2-2 其它調變波形…………………………………………….9 2-3 其它EMI控制的方式………………………………...….9 第三章 數學推導與實驗驗證………………………………..…16 3-1 使用正弦波調變信號原理說明……………………..…16 3-2 β與fm對頻寬影響………………………………….…24 3-3 調變電路說明………………………………………..…27 3-4 使用三角波調變信號…………………………………..32 3-5 使用方波調變信號…………………………………..…35 3-6 時域與頻域的相關聯性…………………………….….37 3-7 使用雙頻調變信號……………………………..……….41 3-8 頻率調變對高頻段EMI的影響………………………44 3-9 頻寬解析度RBW對EMI的影響…………………….49 第四章 調變信對輸出漣波的影響…………………...……..…..50 4-1 輸出漣波………………………………………………..50 4-2 如何改變切換頻率……………………………………..50 4-3 開回路測試(輸出漣波對調變頻率的變化)…………..56 4-4 閉回路測試(輸出漣波對調變頻率的變化)……….….65 4-5 理論假設………………………………………….…….69 4-6 雙頻率調變………………………………………….….79 第五章 結論………………………………………..…………….82 5-1 結論……………..…………………………….…………82 5-2 未來研究方向………………………………….….…….83 參考文獻 ………………………………….….…........….85 | |
| dc.language.iso | zh-TW | |
| dc.subject | 頻率調變 | zh_TW |
| dc.subject | EMI | en |
| dc.title | 使用頻率調變壓低切換式電源供應器的EMI | zh_TW |
| dc.title | Reduction of EMI by Frequency Modulation in Switching Mode Power Supply | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 93-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 許源裕,史富元 | |
| dc.subject.keyword | 頻率調變, | zh_TW |
| dc.subject.keyword | EMI, | en |
| dc.relation.page | 88 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2005-07-19 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電機工程學研究所 | zh_TW |
| 顯示於系所單位： | 電機工程學系 | |
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