摘 要
複金屬燈是高照度氣體放電燈的一種，具有演色性佳、發光效率高及色彩多樣化的優點；然而，也有音頻共振時弧光輸出閃爍、冷點燈啟動暫態時間長、熱點燈困難與燈管等效電阻隨使用時數變化幅度大等問題。這些問題並直接關係到電子安定器參數設計與操作特性之良窳。
本論文旨為探討複金屬燈操作於高頻時的燈管特性，包括：(1)音頻共振現象；(2)冷點燈啟動暫態過程的燈管特性；(3)熱點燈的再啟動高電壓條件；(4)穩態工作時，在不同燈管功率下的調光特性；(5)燈管隨使用時數增加而產生的電氣特性變化。為了針對不同的實驗需求，本文設計了半橋式負載諧振換流電路、兩級升壓點火電路、單級高壓點火電路以及定功率測試電路。以此測試電路實際操作額定功率為70W的複金屬燈，觀察、量測與紀錄燈管各種特性，並分析其變化趨勢；最後，根據所得結論，提供設計複金屬燈電子安定器參數的依據與操作策略。

關鍵詞：複金屬燈，電子安定器，音頻共振，熱點燈。

Abstract
The metal halide lamp is one of high-intensity discharge lamps. It has many advantages such as good color rendering, high efficacy and a variety of color presentations. However, the problems of acoustic resonance, a long transition period of cold starting, and an extremely high ignition voltage for hot restarting should be overcome.

The investigation of the thesis is focused on the electrical characteristics of the metal halide lamp operating at high-frequency. Included are the acoustic resonance, starting transient and steady state operation. Various ballast circuits incorporating with ignitors are designed to drive several 70-W metal halide lamps. The operating frequency ranges with acoustic resonance, the ignition voltages for both cold starting and hot restarting, the transition period, the dimming performance, and the lamp equivalent resistance during the lamp life are measured and analyzed. Based on the investigated results, a useful guideline can be provided for the operation and design of the electronic ballast for metal halide lamps.

Key words : Metal halide lamp, electronic ballast, acoustic resonance, hot restarting.

目 錄

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 2

第二章 複金屬燈物理特性 4
2-1發光特性 4
2-1-1弧光放電 4
2-1-2金屬鹵化物循環 5
2-2啟動高壓 5
2-3音頻共振 6
2-4發光特性 6
2-5電氣特性 7
2-5-1高、低頻工作特性 7
2-5-2暫態過渡 8

第三章 測試電路 13
3-1低頻工作特性測試電路 13
3-2高頻工作特性測試電路 14
3-2-1半橋式負載諧振換流電路 14
3-2-2兩級升壓點火電路 16
3-2-3單級高壓點火電路 17
3-3定功率測試電路 18

第四章 音頻共振 21
4-1音頻共振解決方法 21
4-2量測步驟 23
4-3音頻共振頻率分佈 24
4-3-1相異燈管的頻率分佈 24
4-3-2使用時數的影響 26
4-4音頻共振燈管特性 28

第五章 暫態工作特性 34
5-1冷點燈啟動暫態特性 34
5-1-1冷點燈啟動電壓 34
5-1-2冷點燈啟動暫態過程 36
5-1-3定功率啟動暫態過程 43
5-2熱點燈啟動暫態特性 46
5-2-1量測步驟 46
5-2-2熱點燈點火電壓 48
5-2-3熱點燈啟動暫態特性 48

第六章 穩態工作特性 51
6-1不同燈管功率 51
6-2不同使用時數 58

第七章 結論與討論 62

參考文獻 65

參考文獻
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