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

NCUIR > College of Electrical Engineering & Computer Science > Graduate Institute of Electrical Engineering > Electronic Thesis & Dissertation > Item 987654321/95682

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/95682

Title:	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
Authors:	林宜靜;Lin, Yi-Jing
Contributors:	電機工程學系
Keywords:	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;Non-Isolated Converter;DC-DC Converter;High Voltage Gain;Quadratic Boost Converter;Coupled Inductor;Switched Capacitor
Date:	2024-07-23
Issue Date:	2024-10-09 17:08:55 (UTC+8)
Publisher:	國立中央大學
Abstract:	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。;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.
Appears in Collections:	[Graduate Institute of Electrical Engineering] Electronic Thesis & Dissertation

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