本文提出一單級式複金屬燈電子安定器架構，將降升壓式轉換器、降壓式轉換器與全橋換流器整合成單一功率轉換電路。降升壓式轉換器負責了功因修正，操作於固定頻率、固定導通率和不連續導通模式，使輸入端具有高功因及定功率的效果，且可泛用於世界各地的家用電源。降壓式轉換器則負責功率控制，並搭配全橋換流器提供燈管與交流電源相同頻率之60 Hz低頻方波電流，避免音頻共振的發生。
研究內容包括電路架構的操作原理與工作模式分析，並推導電路方程式，透過電腦模擬驗證理論分析的結果。最後，設計一電子安定器，實際製作雛型電路，驅動70 W複金屬燈，量測電路在不同輸入電壓及不同輸出功率時的電路特性，驗證本文所提出之單級電子安定器確實具有高功因、高效率及定功率的優點。

This thesis presents a single-stage high-power-factor electronic ballast for metal halide lamps. The proposed ballast integrates a buck-boost converter, a buck converter and a full-bridge inverter into a single power conversion circuit. The buck-boost converter is designed to be operated at the discontinuous conduction mode (DCM) with a constant duty ratio at a fixed switching frequency to provide a constant lamp power and to achieve a high power factor for a given ac input voltage. The full-bridge inverter supplies a square-wave current for the lamp at a low frequency the same as the line frequency to avoid acoustic resonance. For the universal input voltage ranged from 90 V to 264 V, the lamp remains at the rated power by controlling the duty-ratio of the buck converter.
The circuit operation is analyzed in detail to derive the design equations. An electronic ballast for 70 W lamps is designed and tested. Computer simulations and experimental measurements are provided to verify that the proposed ballast has the merits of a nearly unity input power factor, a high efficiency greater than 82 % and can drive the lamp at a constant power.

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 複金屬燈電子安定器架構分析 4
2-1複金屬燈特性 4
2-2電子安定器架構 7
2-3單級電子安定器特性分析 10
第三章 單級高功因定功率複金屬燈電子安定器 13
3-1電路架構 13
3-2電路分析與工作模式 15
3-3功因修正部份 20
3-4功率控制部份 23
第四章 參數設計與實驗量測 29
4-1參數設計 29
4-1-1設計流程 30
4-1-2設計實例 35
4-2電腦模擬 37
4-3電路波形量測 39

第五章 結論與討論 47
參考文獻 49

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