升壓型直流轉換器被廣泛應用於低壓升高壓之應用場合。然而由於切
換式電源供應器開關切換特性，造成電流漣波與電壓漣波。近期雖有文獻
利用漣波消除技術來解決電壓漣波與電流漣波之問題，但卻需要加入額外
電路元件，但如此做法將會導致增加轉換器體積與重量。本論文所研析之
升壓型KP轉換器為指導教授為紀念其父潘恭先生(Mr. Kung Pan)百年冥誕
所提出(簡稱為升壓型KP轉換器)，特點為不需增加任何濾波元件，即可達
到輸出電壓近乎零輸出電壓漣波。
本論文主要貢獻如下。首先詳細介紹升壓型KP轉換器於連續導通模
式(CCM)與不連續導通模式(DCM)工作原理，升壓型KP轉換器有電路架
構簡單、控制容易、輸出電流連續與近乎零輸出電壓漣波之優點。其次，
本文對轉換器進行穩態特性分析，並由推導出之輸出電壓漣波數學式可知
升壓型KP轉換器輸出電壓漣波遠低於超級升壓型轉換器(superboost
converter)，凸顯升壓型KP轉換器之優越性。此外，本文並推導轉換器於
連續導通模式與不連續導通模式之小訊號模型以描述該轉換器動態特性。
本文所導出之轉換器於連續導通模式之模型，有別於傳統採用隔離變壓器
表示，而是採用自耦變壓器表示，如此可以更貼切描述升壓型KP轉換器
特性，以凸顯該轉換器可將部分輸入能量不必經過開關切換，直接傳送至
輸出之特點。本論文最後製作規格為輸入電壓24V、輸出電壓60V、輸出
額定功率100W之雛型轉換器，該轉換器於輸出功率大於7.5W即進入連續
導通模式。經由實測結果可知，轉換器輸出電容雖然只採用6.8uF，然其
最大輸出電壓漣波百分比僅為0.107%，且由輕載至滿載其效率亦均高於
95.4%，於輸出功率20W時，該轉換器可達到98.02%之最高效率。

Step-up DC converters have been widely used in low voltage converting to high voltage applications. The inherent switching nature of switching power supplies would cause voltage and current ripple. Although many ripple cancellation techniques have been proposed in the literature recently, but they all require extra components which make the converter larger and heavier. In view of the above mentioned considerations, this thesis is focused on analysis and modeling of a step-up KP converter which was proposed by Prof. Pan in memory of his father Mr. Kung Pan (KP). Ideally, this step-up KP dc converter
can achieve almost zero output voltage ripple without adding extra filter elements. The main contributions of this thesis may be summarized as follows. First, the operation principle of the step up KP converter for both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) are described in detail. The advantages of the step-up KP dc converter lie in its simple topology and control, without pulsating output current as well as almost zero output voltage ripple. Second, the steady state characteristics of the step-up KP dc converter are analyzed. It is worth mentioning that from the derived analytic expression of the output voltage ripple, one can see that the output voltage ripple is remarkably better than that of an ideal superboost
converter. Third, the corresponding small signal models for CCM and DCM cases of the step-up KP dc converter are derived for modeling the dynamics. For the CCM case, an ideal auto-transformer model is adopted instead of an isolation transformer. This features that part of the energy can be delivered to the output directly without switching mode processing to achieve higher efficiency and hence can model the new converter more pertinently. Finally, a 100W prototype with 24V input voltage, 60V output voltage is constructed. The
converter is operated at CCM when the load is greater than 7.5W. Experimental results show that the worst case output voltage ripple is 0.107% even though an output capacitor of 6.8 uF is adopted and the efficiency is above 95.4%. A maximum efficiency of 98.02% can be achieved when the load is 20W.

摘 要 .............................................I
英文摘要 ..........................................II
誌 謝 ............................................IV
目 錄 .............................................V
圖 目 錄 .........................................VII
表 目 錄 ..........................................XI
第 一 章 緒 論 ......................................1
1.1 研究動機 ........................................1
1.2 文獻回顧 ........................................1
1.3 本論文之貢獻 .....................................2
1.4 論文內容概述 .....................................3
第 二 章 傳統與近期升壓型直流轉換器簡介 ..................4
2.1 前言 ...........................................4
2.2 傳統升壓型直流轉換器簡介 ...........................4
2.3 超級升壓型直流轉換器簡介 ...........................8
2.4 KY 直流轉換器簡介 ...............................15
第 三 章 升壓型KP直流轉換器特性分析 ....................23
3.1 前言 ..........................................23
3.2 轉換器架構與工作原理 .............................23
3.3 轉換器於連續導通模式之特性分析 .....................37
3.4 轉換器於不連續導通模式之特性分析 ...................48
第 四 章 升壓型KP直流轉換器之建模 .....................52
4.1 前言 ..........................................52
4.2 轉換器於連續導通模式之數學模型推導 .................53
4.3 轉換器於不連續導通模式之數學模型推導 ...............59
4.4 模擬結果 ......................................65
第 五 章 雛型電路製作與量測結果 .......................72
5.1 前言 .........................................72
5.2 功率級電路元件參數設計與電路製作 ...................73
5.3 驅動電路實現 ...................................81
5.4 模擬與實測結果 .................................82
第 六 章 結 論 ...................................111
6.1 總結 ........................................111
6.2 未來工作 .....................................112
參考文獻 .........................................114

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