臺灣博碩士論文加值系統

交流-直流電能轉換器已廣泛地應用於電子設備作為電源供應及蓄電池充電，本論文將發展一具直流去耦電路之交流-直流電能轉換器，其由圖騰柱升壓無橋式功因修正器及去耦合電路組合而成，圖騰柱升壓無橋式功因修正器利用電力電子開關導通與截止，控制輸入電流為與交流輸入電壓相同相位之弦波，達到單位輸入功因，並控制直流輸出電壓。直流去耦電路由一電力電子開關臂與一被動濾波器組成，直流去耦電路操作成一交流虛擬阻抗串聯於直流輸出端，抑制圖騰柱升壓無橋式功因修正器輸出之交流漣波，降低圖騰柱升壓無橋式功因修正器濾波電容之容量，以避免使用電解質電容，進而延長使用壽命及提升可靠度。本文並將以數位信號處裡晶片為控制核心，發展具直流去耦電路之交流-直流電能轉換器雛形，以測試並驗證其功能。

AC-DC power converters have been widely used in the applications of electronic equipment for supplying electric power and battery charger. In this thesis, a AC-DC power converter, composed of a totem-pole bridgeless boost power factor corrector and a DC decoupling circuit, is developed. By controlling the power electronics, the input current of totem-pole bridgeless boost power factor corrector will be sinusoidal and in phase with the utility voltage to perform the unity power factor. The DC decoupling circuit is composed of a power-electronic arm and a passive power filter. The operation of DC decoupling circuit is simulated to be a virtual AC impedance connected to the DC output in series to suppress the AC ripple of output current for the totem-pole bridgeless boost power factor. Accordingly, the capacity of filter capacitor for the totem-pole bridgeless boost power factor is reduced such that the use of electrolytic capacitor can be avoided to prolong the service life and improve the reliability. A hardware prototype based on the control chips of digital signal processor (DSP) will be developed to verify the performance of the proposed AC-DC power converter.

摘要 I
ABSTRACT II
圖目錄 V
表目錄 VIII
第一章 緒論 1
1-1 前言 1
1-2 研究動機與目標 1
1-3 論文架構 3
第二章 交流-直流電能轉換器 4
2-1 二極體整流器 [20] 4
2-2 主動功率因數修正器 6
2-2-1 具有橋式二極體整流之功率因數修正器 6
2-2-2 無橋式主動功率因數修正器 [7]- [16] 10
2-3 主動式去耦合電路 13
第三章 具直流去耦電路之無橋式交流-直流電能轉換器 17
3-1 電路架構 17
3-2 圖騰柱升壓無橋式功因修正器 18
3-2-1 圖騰柱升壓無橋式功因修正器之操作原理 18
3-2-2 圖騰柱升壓無橋式功因修正器之控制方塊圖 23
3-3 去耦合電路 24
3-3-1 去耦合電路之操作原理 25
3-3-2 去耦合電路之控制方塊圖 28
3-4 降壓式轉換器 [20] 29
第四章 硬體雛形 31
4-1 周邊硬體電路 31
4-1-1 交流電源電壓感測器 32
4-1-2 電流感測器 33
4-1-3 直流電壓感測器 33
4-1-4 驅動電路 34
4-1-5 帶拒濾波器 35
4-2 數位控制器 37
4-2-1 控制器程式流程 37
4-2-2 圖騰柱升壓無橋式功因修正器之控制程式流程 37
4-3 直流去耦合電路之控制 40
4-3-1 帶通濾波器 40
4-3-2 類比PWM電路 41
第五章 實驗結果與討論 43
5-1 電力電路元件規格 43
5-2 圖騰柱升壓無橋式功因修正器之實測結果 45
5-3 去耦合電路之實測結果 47
5-4 直流輸出之實測結果 49
5-5 暫態響應 52
第六章 結論 57
6-1 總結 57
6-2 未來研究方向 57
參考文獻 58

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