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博碩士論文 etd-0704106-151500 詳細資訊
Title page for etd-0704106-151500
論文名稱
Title
複金屬燈暫態特性與啟動策略之研究
Investigation on Starting Transient Characteristics and Start-Up Scenario of Metal Halide Lamps
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
68
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2006-06-16
繳交日期
Date of Submission
2006-07-04
關鍵字
Keywords
複金屬燈、電子安定器、啟動暫態
Metal halide lamp, Electronic ballast, Starting transient
統計
Statistics
本論文已被瀏覽 5688 次,被下載 1781
The thesis/dissertation has been browsed 5688 times, has been downloaded 1781 times.
中文摘要
爲探討方波電流對複金屬燈冷啟動之暫態特性的影響,本文利用一組以方波電流驅動複金屬燈之電路,各階段中的燈管電流均可依實驗所需獨立調整及控制。文中針對150 W複金屬燈作啟動暫態實際量測,透過分析複金屬燈在冷啟動暫態過程中燈管電壓、電流及功率之電氣特性,將冷啟動暫態分成電壓崩潰、熾光放電、熾光轉弧光及熱平衡四個階段,並同時配合觀察弧光、光譜、光輸出及輝度之光特性的變化,以定義燈管進入穩定工作之主要根據。
本文研擬四種啟動策略,比較不同的操作方式對加速啟動之效果。根據實驗觀察,得知增加燈管電流確實可以縮短啟動之暫態時間;加大燈管電流的時間越長,會使燈管過功率操作,讓燈管在較短時間內,累積較多能量,輸出較大輝度,即可大幅縮短複金屬燈啟動暫態時間。
Abstract
This study investigates the starting characteristics of metal halide lamps. A laboratory electronic ballast was built to drive metal halide lamps with a programmable low-frequency square-wave current. The lamp current at each stage of the starting transient can be independently adjusted. Experiments were conducted on 150-W metal halide lamps. By examining the waveforms of transient voltage, current and power, the starting period can be classified into four stages, breakdown, glow discharging, glow-to-arc transition, and thermal equilibrium. In addition, the stable operation is defined by observing the variations of the lamp arc, lighting spectrum and luminous output.
Based on the investigation results, four starting scenarios are presented and examined to learn the different acceleration schemes. Experimental evidence shows that the starting time of a metal halide lamp can be effectively shortened by increasing the lamp current during the start-up transition. More importantly, a specifically-regulated operating power enables the lamp to further enhance the luminance producing, and hence to greatly reduce the starting transient period.
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論文大綱 3
第二章 複金屬燈暫態特性量測系統 4
2-1量測系統架構 4
2-2測試電路 5
2-2-1低頻方波測試電路架構 5
2-2-2定電流、兩階段定電流控制電路及流程 6
2-2-2-1定電流、兩階段定電流控制電路 6
2-2-2-2定電流、兩階段定電流控制流程 9
2-2-3定電流轉定功率控制電路及流程 11
2-2-3-1定電流轉定功率控制電路 11
2-2-3-2定電流轉定功率控制流程 12
2-2-4定電流轉定輝度控制電路及流程 14
2-2-4-1定電流轉定輝度控制電路 14
2-2-4-2定電流轉定輝度控制流程 16
第三章 複金屬燈啟動暫態之電特性探討 18
3-1啟動暫態的階段區隔 18
3-2燈管電流對暫態變化之影響 21
3-3各階段燈管電流對暫態變化之影響 22
3-3-1熾光轉弧光第一階段燈管電流變化之影響 22
3-3-2熾光轉弧光第二階段燈管電流變化之影響 24
3-3-3熾光轉弧光第一階段對第二階段之影響 24
第四章 複金屬燈啟動暫態之光特性探討 27
4-1發光原理 27
4-2暫態電弧、光輸出和光譜之變化過程 28
4-2-1電壓崩潰到熾光轉弧光階段之變化過程 29
4-2-2熱平衡階段到穩態發光之變化過程 32
4-3暫態輝度之變化過程 38
第五章 複金屬燈之啟動策略 40
5-1啟動策略 40
5-2不同啟動策略對加速啟動之效果 43
5-3累積能量和燈管功率對輸出輝度之關係 49
5-4啟動策略之比較 51
第六章 結論與討論 53
參考文獻 55
參考文獻 References
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