臺灣博碩士論文加值系統

本論文主要研製一台負電壓極性輸出的交流-直流轉換器，電路拓樸採用'CUK功率因數修正電路轉換器為基礎，利用電路架構本身具有昇降壓特性且輸入與輸出電流為連續，具有低漣波優點。使用UC3842控制，利用箝位電流模式控制法，配合電壓隨耦控制功能特性，來達到功率因數修正之目的。文中並針對其'CUK功率因數修正電路轉換器、箝位電流模式控制法、電壓隨耦控制法及斜率補償等架構做原理分析並加以說明。並利用PSIM模擬軟體進行電路模擬，驗證及確認其設計之可行性。最後設計實作一台100W箝位電流模式控制之'CUK功率因數修正轉換器，將實測結果和理論值相互印證。

This thesis presents an AC-DC converter with negative voltage output. The circuit topology is based on the 'CUK power factor correction converter with inherent voltage step-up/down features. The input and output currents are continuous, low ripple currnet can be achieved. Using UC3842 control IC and the clamp current mode control and voltage-follower control, the studied AC-DC converter has high input power factor. The operating principles for the 'CUK power factor correction converter, clamp current mode control, voltage-follower control, and slope compensation are anlyzed and discussed. Some PSIM simulation results are shown to verify feasibility of the design. An 100W clamp-current-mode control 'CUK power factor correction converter is implemented and tested. The experimental results are fully agreed with the theoretical anlysis.

目錄
頁碼
摘要 i
Abstract ii
誌謝 iii
目 錄 v
圖目錄 vii
第一章 緒論 1
1-1 研究背景 1
1-2 研究目的 2
1-3 內容大綱 4
第二章 功率因數修正 5
2-1 功率因數與總諧波失真之定義 5
2-2 功率因數修正背景簡介 9
2-3 功率因數修正電路之介紹 10
2-3-1 被動式功率因數修正電路 10
2-3-2 主動式功率因數修正電路 12
2-3-2-1 平均電流模式控制法 15
2-3-2-2 峰值電流模式控制法 17
2-3-2-3 磁滯電流模式控制法 18
2-3-2-4 電壓隨耦控制法 19
第三章 電路架構與原理分析 21
3-1 'CUK轉換器電路簡介 21
3-1-1 'CUK轉換器動作原理 22
3-1-2 輸出對輸入電壓轉移函數之推導 25
3-2 斜率補償 27
3-3 箝位電流模式控制法 30
第四章 電路設計 45
4-1 'CUK功率因數修正電路之規格 45
4-2 'CUK功率因數修正電路之設計 46
4-2-1 控制IC UC3842簡介 46
4-2-2 CUK功率因數修正電路參數設計 51
第五章 實驗量測波形與數據 56
5-1 電路模擬分析 56
5-2 電路實測波形 59
5-3 電路實測數據 72
第六章 結論與未來展望 78
6-1 結論 78
6-2 未來展望 78
參考文獻 80

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