臺灣博碩士論文加值系統

　　傳統車用氙氣頭燈安定器利用返馳式轉換器將汽車12V電壓升壓在經由直流/交流換流器驅動燈管。因需選用較高耐壓之元件，故無法達到高效率的目的。本文利用一具新型電路架構之車用氙氣頭燈電子安定器並使用定功率控制，以達到85%高效率、35W定功率輸出。升壓-返馳式轉換器架構是採用微處理器作為系統主控制核心，將其應用於氙燈的時序控制，並達到定功率控制，如此燈管功率不會隨時間增加而變動，使光輸出無變化且延長燈管壽命。最後本文實作一35W定功率控制的D1車用氙氣頭燈電子式安定器，並探討啟動暫態與穩態工作的特性。

　　The conventional electronic ballast for automobile Xenon lamp use flyback converter to step 12V battery voltage up to rated voltage. The DC/AC inverter is used to converter this rated voltage in order to drive the lamp. In this circuit topology, high-voltage-rated power devices are used resulting in low efficiency. In this thesis, an automobile Xenon lamp electronic ballast with boost-flyback converter and constant lamp power control is proposed. The controller of the proposed boost-flyback converter is controlled with a microcontroller to start the Xenon lamp and control the lamp output power with constant at steady state. Thus, the luminous of automotive Xenon lamp can be kept at constant with longer lamp life. Finally, the D1 automobile Xenon lamp electronic ballast with 35W constant lamp power control is successfully built in the laboratory with 85% efficiency.

摘要 Ⅰ
英文摘要 Ⅱ
誌謝 Ⅲ
目錄 Ⅳ
圖目錄 Ⅵ
表目錄 VIII
第一章 緒論 1
1-1 研究背景與動機 1
1-2 論文大綱 3
第二章 車用氙氣頭燈發光原理與特性 4
2-1 車用氙氣頭燈光源及安定器的發展現況 4
2-2 氣體放電燈之基本原理 5
2-3 車用氙氣頭燈的發光特性 7
2-4 車用氙氣頭燈構造與特性 8
2-5 車用氙氣頭燈的音頻共振問題及解決方法 11
第三章 車用氙氣頭燈電子式安定器之電路分析與設計原理 13
3-1 系統基本架構 13
3-2 DC/DC轉換器 15
3-2-1 升壓-返馳式轉換器介紹與模式分析 15
3-2-2 變壓器設計 20
3-3 高壓點火電路 22
3-4 全橋換流器 26
3-5 單晶片微處理器簡介 28
3-6 氙燈安定器控制電路 32
3-6-1 系統動作流程 33
3-6-2 週邊控制電路 35
3-6-3 定功率控制及最大電流限制 38
第四章 電路設計及量測分析 42
4-1 氙燈安定器電路設計 43
4-1-1升壓-返馳式轉換器 43
4-1-2全橋換流器 45
4-2 電路特性量測 47
4-3 燈管啟動暫態特性量測 52
第五章 結論與未來展望 57
5-1結論 57
5-2未來展望 58
參考文獻 59

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