基於耦合電感‐切換電容單元具零電流切換之新型二次高升壓轉換器

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姓名

林宜靜(Yi-Jing Lin) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

基於耦合電感‐切換電容單元具零電流切換之新型二次高升壓轉換器
(A Novel Quadratic High Step–Up DC–DC Converter with ZCS Based on Coupled Inductor–Switched Capacitor Cells)

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至系統瀏覽論文 (2029-7-23以後開放)

摘要(中)

本論文針對所提出的轉換器進行詳細分析，根據其中各項元件和參數推導出相關公式，進行電路模擬與損耗分析，以此確認了所提出設計的有效性。隨後，與其他高升壓轉換器進行了對比，驗證了所提出之新型轉換器的性能優勢。最後，成功實現了一個功率為200W的實驗樣本，驗證了理論設計的可行性。而實驗結果表明，該轉換器效率達到了93.25%，這證實了設計之新型轉換器的可行性及其在實際應用上的優越性。
本論文提出了一種適用於燃料電池和太陽能發電等低壓電源應用的高升壓直流‐直流轉換器，該轉換器採用了二次升壓轉換器為基礎架構，能夠在較低的工作週期下達到高輸出電壓。同時，引入了耦合電感和切換電容單元，進一步提高電壓轉換比。所提出的轉換器產生高電壓增益、開關上的低電壓應力、連續輸入電流以及電源和負載之間存在公共接地。此外，耦合電感自身的漏電感提供部分二極體零電流切換的特性，有助於緩解二極體的反向恢復問題與導通損耗。

摘要(英)

This thesis proposes a high step-up DC-DC converter suitable for low-voltage power sources such as fuel cells and solar power generation. The converter is based on quadratic boost converter(QBC), which achieves high output voltage at lower duty cycles. Additionally, it introduces coupled inductor and switched capacitor units to further enhance the voltage conversion ratio. The proposed converter features high voltage gain, low voltage stress on switches, continuous input current, and a common ground between the power source and load. Furthermore, the leakage inductance of the coupled inductor provides zero-current switching(ZCS) conditions for the partial diodes, aiding in alleviating diode reverse recovery issues and conduction losses.
A detailed analysis of the proposed converter is conducted in this thesis, deriving relevant formulas based on its components and parameters. To confirm the effectiveness of the design performs circuit simulations and loss analyses. Comparisons with other converters validate its performance advantages. Finally, a 200W experimental prototype demonstrates the feasibility of the design, with an efficiency of 93.25%, affirming its superiority in practical applications.

關鍵字(中)

★ 非隔離式轉換器
★ 直流‐直流轉換器
★ 二次升壓轉換器
★ 高電壓增益
★ 耦合電感
★ 切換電容

關鍵字(英)

★ Non-Isolated Converter
★ DC-DC Converter
★ High Voltage Gain
★ Quadratic Boost Converter
★ Coupled Inductor
★ Switched Capacitor

論文目次

摘要 i
Abstract ii
目錄 iii
圖目錄 vi
表目錄 x
第一章緒論 1
1-1 研究背景 1
1-2 文獻探討 2
1-3 研究動機與目的 3
1-4 論文架構 5
第二章二次升壓與切換電容介紹 6
2-1 二次升壓轉換器介紹 6
2-2 切換電容介紹 7
第三章轉換器電路設計 10
3-1 電路主架構分析 10
3-2 電路切換時序說明 11
3-3 理想電壓轉換比推導 17
3-4 元件應力分析 20
3-4-1 元件電壓應力 20
3-4-2 元件電流應力 22
3-5 元件設計考量 28
3-5-1 電感漣波計算 28
3-5-2 電容漣波計算 30
3-6 回授電路控制 34
第四章電路模擬分析 35
4-1 電路模擬與參數規格設定 35
4-2 轉換器波形模擬結果 36
4-2-1 一階耦合電感‐切換電容單元之二次升壓轉換器 37
4-2-2 二階耦合電感‐切換電容單元之二次升壓轉換器 42
4-3 非理想元件分析 44
4-3-1 元件損耗分析 45
4-3-2 效率評估 47
4-4 架構比較 56
第五章電路實作與實驗結果 60
5-1 轉換器電路實作 60
5-1-1 STM32F103微控制器電路 61
5-1-2 轉換器電路設計 62
5-1-3 回授系統電路設計 63
5-2 轉換器實驗結果 65
5-2-1 轉換器量測波形 65
5-2-2 轉換器效率 69
5-2-3 回授控制結果 70
第六章結論 73
第七章參考文獻 75

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指導教授

徐國鎧(Kuo-Kai Shyu)

審核日期

2024-7-23

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