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研究生: 郭孟澤
MENG-TSE KUO
論文名稱: 具三倍壓整流輸出之高壓LED驅動器研製
Study and Implementation of a High-Voltage LED Driver with Voltage Tripler Rectification
指導教授: 羅有綱
Yu-Kang Lo
邱煌仁
Huang-Jen Chiu
口試委員: 劉益華
Yi-Hua Liu
學位類別: 碩士
Master
系所名稱: 電資學院 - 電子工程系
Department of Electronic and Computer Engineering
論文出版年: 2014
畢業學年度: 102
語文別: 中文
論文頁數: 102
中文關鍵詞: LED驅動器無橋式功率因數修正器半橋串聯諧振轉換器三倍壓整流電路定電壓控制定電流控制
外文關鍵詞: LED driver, bridgeless power factor corrector, half-bridge series resonant converter, voltage tripler rectifier, constant voltage control, constant current control
相關次數: 點閱:645下載:18
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  • 本論文旨在研製高效率、高功率因數LED驅動器,選用無橋式功率因數修正器為前級電路架構,藉以降低導通損耗提高轉換效率;另外藉由操作在邊界導通模式,使得開關能近似於零電壓切換,且二極體也能達到零電流截止,有效降低切換損失。後級直流-直流轉換器分別採用半橋串聯諧振橋式整流轉換器與半橋串聯諧振三倍壓整流轉換器,因其具有零電壓切換之優點,故能減少一次側之切換損失。最後實際製作兩部交流輸入90 V~260 V/60 Hz、直流輸出215 V、150.5 W,具有定電壓控制、定電流控制的LED驅動器,並驗證不同後級直流-直流架構皆能達到高效率、高功因的目的。


    This thesis focuses on the study and implementation of high-efficiency, high-power factor (PF) LED drivers. The front-end rectifier is a bridgeless power factor corrector (PFC) to reduce the conduction losses and improve the efficiency. By operating under boundary conduction mode, near zero-voltage switchings for the active switches and zero-current switchings for the diodes are achieved, which can further reduce the switching losses. For the post-stage DC-DC converter, half-bridge series resonant converters with bridge rectifier and voltage tripler rectifier, respectively, are adopted. The switching losses at primary side can be reduced by zero-voltage-switching feature. Two LED drivers with an input voltage of 90 to 260 Vrms/60 Hz, a DC output voltage of 215 V, and an output power of 150.5 W are implemented and tested. Constant voltage control and constant current control are also fulfilled. Both the presented DC-DC topologies are verified to achieve high efficiency and high PF.

    目 錄 摘 要 i Abstract ii 誌謝 iii 目 錄 iv 圖目錄 vii 目錄 xi 第一章 緒論 1 1.1 研究動機及目的 1 1.2 論文內容架構簡述 2 第二章 功率因數修正器 4 2.1 功率因數與諧波失真定義 4 2.2 功率因數控制模式 9 2.2.1 平均電流模式控制法 12 2.2.2 電壓隨耦模式控制法 13 2.2.3 邊界導通模式控制法 15 第三章 無橋式功率因數修正器 20 3.1 架構簡介 20 3.2 無橋式架構動作原理與分析 22 第四章 半橋串聯諧振橋式與三倍壓整流轉換器 32 4.1 理想R-L-C串聯電路的頻率響應 33 4.2 半橋串聯諧振電路 35 4.2.1 SRC諧振模式 36 4.2.2 LLC-SRC諧振模式 38 4.2.3 SRC與LLC-SRC之差別比較 39 4.3 半橋串聯諧振三倍壓整流轉換器動作原理與分析 41 第五章 整機LED驅動器設計 51 5.1 無橋式功率因數修正器設計 51 5.1.1 無橋式功率因數修正器電路規格 51 5.1.2 控制IC FAN-6961 52 5.1.3 無橋式功率因數修正器之功率級元件設計 53 5.2 半橋串聯諧振橋式與三倍壓整流轉換器設計 60 5.2.1 半橋串聯諧振橋式整流轉換器電路規格 60 5.2.2 控制IC UCC-25600 60 5.2.3 基於半橋串聯諧振橋式整流轉換器之功率級 元件設計 62 5.2.4 基於半橋串聯諧振三倍壓整流轉換器之功率級 元件設計 70 第六章 實驗數據與結果 75 6.1 無橋式功率因數修正器實驗波形與數據 75 6.2 半橋串聯諧振橋式與三倍壓整流轉換器之實驗波形與數據 79 6.2.1 基於半橋串聯諧振橋式整流轉換器之實驗 波形與數據 79 6.2.2 基於半橋串聯諧振三倍壓整流轉換器之實驗 波形與數據 84 6.3 定電流電路實測波形與數據 89 6.3.1 半橋串聯諧橋式整流振轉換器定電流實測 波形與數據 89 6.3.2 半橋串聯諧振三倍壓整流轉換器定電流實測 波形與數據 91 6.4 整機LED驅動器實測數據 94 第七章 結論與未來展望 96 7.1 結論 96 7.2 未來展望 96 參考文獻 98

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