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論文名稱 Title |
單級高功因E類共振換流器之螢光燈電子安定器
Single-Stage High-Power-Factor Electronic Ballast with Class E Inverter for Fluorescent Lamps |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
69 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2002-05-27 |
繳交日期 Date of Submission |
2002-06-11 |
關鍵字 Keywords |
螢光燈、E類共振換流器、電子安定器、功因修正 fluorescent lamp, class E resonant inverter, electronic ballast, power factor correction(PFC) |
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統計 Statistics |
本論文已被瀏覽 5688 次,被下載 48 次 The thesis/dissertation has been browsed 5688 times, has been downloaded 48 times. |
中文摘要 |
本文提出一應用於螢光燈管的單級高功因E類共振換流器電子安定器。電路的架構是由具有功因修正功能之降升壓轉換器與E類共振換流器所整合而成。整合後之安定器,僅使用一個主動功率開關。將此主動開關以固定頻率切換,且使降升壓轉換器操作於非連續電流模式,可在輸入電源端獲得高功率因數。本電子安定器採用脈波寬度調變方式,控制螢光燈預熱及啟動,藉由調整主動開關的導通率,可提供適當的預熱電流;透過適當的參數設計,可得到足夠高的點燈電壓,並使主動開關於零電流切換導通,承受較低的電壓以減少切換損失,提高電路效率;外加一控制電路,在預熱期間,完全消除熾熱電流,使燈絲達到適當預熱溫度,才啟動燈管,以延長燈管壽命。 本文採用螢光燈的等效電阻模型,應用基本波分析法,建立結合安定器與燈管之等效電路。以此等效電路為基礎,推導電路參數的設計方程式及推演其設計流程,據以設計一電子安定器,推動OSRAM PL-27W小型螢光燈管,進行電腦模擬,並實際製作電路量測。實驗結果證實此電子安定器,可達到所預期的性能。 |
Abstract |
A single-stage high-power-factor electronic ballast with class E inverter is proposed for driving the fluorescent lamp. The circuit configuration is obtained from the integration of a buck-boost converter for power-factor- correction (PFC) and a class E resonant inverter for ballasting. The integrated ballast circuit requires only one active power switch and simple control. Operating the buck-boost converter in discontinuous conduction mode (DCM) at a fixed frequency, the electronic ballast can achieve nearly unity power factor. With pulse-width-modulation (PWM), the electronic ballast can provide an appropriate filament current for preheating, a high voltage for ignition, and then a desired lamp current for steady-state operation. An additional control circuit is included to eliminate the glow current during preheating stage. The operation of the ballast-lamp circuit is analyzed by fundamental approximation. Computer simulations are made and design equations are derived on basis of the power-dependent resistance model of the fluorescent lamp. With carefully designed circuit parameters, the active power switch can be switched on at zero current to reduce the switching losses leading to a higher efficiency. An experimental circuit designed for a PL-27W compact fluorescent lamp is built and tested to verify the computer simulations and analytical predictions. Experimental results show that satisfactory performances can be obtained on the proposed electronic ballast. |
目次 Table of Contents |
中文摘要 I 英文摘要 II 目錄 III 圖表目錄 V 第一章 簡介 1 1-1研究動機 1 1-2本文大綱 5 第二章 電子安定器及燈管模型 6 2-1電子安定器基本架構 6 2-1-1功因修正電路 6 2-1-2共振式換流器 8 2-2等效燈管電阻模型 15 第三章 單級高功因E類共振換流器之電子安定器 19 3-1電路架構 19 3-2脈波寬度調變控制電路 21 3-3電路工作原理與工作模式分析 22 3-3-1最佳化工作模式 23 3-3-2 次佳化第一型工作模式 26 第四章 電路特性分析 31 4-1功因修正電路分析 31 4-2 E類共振換流器電路分析 34 4-2-1 E類共振換流器之等效電路 34 4-2-2最佳化工作電路分析 36 4-3 燈絲功率 41 第五章 燈管啟動 42 5-1燈絲預熱 43 5-2預熱啟動電路 44 5-3預熱與點燈模擬電路模型 46 第六章 應用實例及量測 48 6-1電路參數設計 48 6-2電腦模擬 55 6-3實測結果 58 6-3-1控制電路 58 6-3-2測量結果 59 6-4燈管啟動 61 第七章 結論與討論 64 參考文獻 66 |
參考文獻 References |
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