臺灣博碩士論文加值系統

本論文提出一具高轉換效率之寬輸入寬輸出升壓式串級雙主動諧振轉換器。此轉換器以升壓電路串級雙主動諧振轉換器為主要架構，前級為升壓轉換器，也為整體電路架構之主要控制、調變電路，後級使用雙主動諧振轉換器，其頻率操作於準諧振點，一次側功率開關與二次側同步整流開關具有柔性切換之功能，藉此改善傳統轉換器之硬性切換損耗並以二次側同步整流技術，改善傳統轉換器之整流側二極體之損耗，以提高整體轉換器之整體效率。本論文數位控制使用之處理器為TMS320F28335，可使回授控制具高度彈性與穩定性。本文之轉換器具有寬範圍輸入電壓40~125 V為模擬燃料電池之輸出電壓範圍與具寬範圍輸出40~60 V，以傳輸功率為1.5 kW進行設計。經由實驗可得，在輸入40 V轉輸出40 V可達最高效率95.16%，在輸入40 V轉輸出60 V可達最高效率94.68%，在輸入125 V轉輸出40V可達最高效率96.71%，在輸入125 V轉輸出60 V可達最高效率96.43%。

This thesis proposes a high-efficiency wide-input wide-output boost cascaded dual-active resonant converter. The converter utilizes a cascaded dual-active resonant converter with a boost converter as the pre-stage, serving as the primary control and modulation circuit for the overall circuit architecture. The post-stage employs a dual-active resonant converter operating at the quasi-resonant frequency point. The primary-side power switches and secondary-side synchronous rectifying switches feature soft switching to improve the hard switching losses in conventional converters. Additionally, the secondary-side synchronous rectification technology is employed to mitigate the losses caused by conventional converter rectifier diodes, thereby enhancing the overall efficiency of the converter. The digital control processor used in this study is TMS320F28335, which enables highly flexible and stable feedback control. The converter designed in this paper has a wide input voltage range of 40-125 V, simulating the output voltage range of fuel cells, and a wide output range of 40-60 V. The design is aimed at a transmission power of 1.5 kW. Experimental results demonstrate that the converter achieves a maximum efficiency of 95.16% for an input of 40 V and an output of 40 V, 94.68% for an input of 40 V and an output of 60 V, 96.71% for an input of 125 V and an output of 40 V, and 96.43% for an input of 125 V and an output of 60 V.

摘要...i
Abstract...ii
誌謝...iii
目錄...iv
表目錄...vi
圖目錄...vii
第一章 緒論...1
1.1 研究動機與目的...1
1.2 文獻探討...2
1.3 論文大綱...4
第二章 雙組並聯升壓式串級雙主動諧振轉換器介紹與分析...6
2.1 雙組並聯升壓式串級雙主動諧振轉換器與特性及控制法介紹...6
2.2 硬性切換與柔性切換...7
2.3 電路動作原理分析...8
第三章 轉換器公式及電壓增益推導...26
3.1 升壓式轉換器公式及電壓增益推導...26
3.2 雙主動諧振轉換器電壓增益推導...29
3.3 雙主動諧振轉換器電壓增益曲線...32
第四章 轉換器設計...34
4.1 轉換器之電氣規格...34
4.2 轉換器設計流程及元件選用...34
4.3 輔助電路設計...44
第五章 數位應用控制與電路模擬分析...46
5.1 系統控制策略...46
5.2 數位控制器設計...46
5.3 電路模擬與分析...47
第六章 實驗數據與波形量測...54
6.1 轉換器實際電路參數及量測儀器設備介紹...54
6.2 前級升壓式轉換器量測波形...56
6.3 後級雙主動LLC諧振轉換器量測波形...61
6.4 轉換器動態負載之量測波形...69
6.5 效率分析...72
第七章 結論與未來展望...78
7.1 結論...78
7.2 未來展望...78
參考文獻...79
Extended Abstract...82

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