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研究生:郭子瑄
研究生(外文):Tzu-HsuanKuo
論文名稱:具均流之發光二極體驅動電路設計與研製
論文名稱(外文):Design and Implementation of a LED Driver with Current Balancing
指導教授:梁從主
指導教授(外文):Tsorng-Juu Liang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系碩博士班
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:60
中文關鍵詞:均流電路發光二極體驅動電路半橋串聯諧振換流器
外文關鍵詞:Current balancingLED driverHalf-Bridge series resonant circuit
相關次數:
  • 被引用被引用:1
  • 點閱點閱:244
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  • 下載下載:32
  • 收藏至我的研究室書目清單書目收藏:0
本文研製一具均流之發光二極體驅動電路,此電路架構包含前級昇壓型功率因數修正電路和後級半橋串聯諧振電路,此驅動電路並具有均流功能,以平衡多串發光二極體之電流。本文將探討發光二極體等效電路對半橋串聯諧振換流器電路特性之影響與其電路動作原理,並對所提出之均流策略進行特性分析與設計考量。最後實際研製一具均流之發光二極體驅動電路,驅動4個發光二極體負載模組,每模組包含15 顆1W白光發光二極體,以驗證理論分析之可行性,輸入電壓可操作於90~260 Vrms,效率為84.3%以上,最高滿載效率為87.9%。
In this thesis, the design and implementation of a LED driver with current balancing are presented. The proposed driver includes a boost power factor correction converter as front-stage and a half-bridge resonant inverter as rear-stage. With the current balancing scheme, the driver is suitable to drive the multi-string LEDs. The effect of the LED equivalent model on the resonant circuit and the driver operating principles are discussed. The design and characteristics of proposed current balancing scheme are also considered. Finally, a two-stage LED driver with current balancing is implemented to drive 4 strings LED module, which contains 15 pieces 1W white light LEDs for each string. Experimental results show that the proposed circuit can be operated at 90~264Vrms AC input voltage range and the highest efficiency is 87.9 %.
摘 要 I
英文摘要 II
誌 謝 III
目 錄 IV
表 目 錄 VI
圖 目 錄 VII
第一章 緒論 1
1.1 研究背景與目的 1
1.2 本文架構簡介 3
第二章 發光二極體及其驅動電路介紹 4
2.1 發光二極體及其等效電路分析 5
2.2 發光二極體驅動電路 8
2.2.1 常見發光二極體驅動電路架構介紹 8
2.2.2 半橋串聯諧振電路 9
2.2.3 功率因數修正電路 10
2.3 發光二極體均流驅動電路 13
第三章 發光二極體均流驅動電路分析 16
3.1功率因數修正電路 16
3.2 半橋串聯諧振換流器 19
3.2.2 諧振網路特性分析 30
3.2.3 均流電路特性分析 32
第四章 驅動電路設計與實驗結果討論 36
4.1 驅動電路系統規格 36
4.2 功率因數修正電路參數設計 38
4.3 均流電容及半橋串聯諧振換流器參數設計 39
4.4 實驗波形及相關數據討論 43
4.5 均流效果與光學特性量測與討論 51
第五章 結論與未來展望 56
5.1 結論 56
5.2 未來展望 57


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