臺灣博碩士論文加值系統

本論文提出一具漏感回收之柔性切換交錯式隔離型雙向轉換器。所提出轉換器為傳統SEPIC轉換器之衍生電路，並透過高頻變壓器與結合切換式電容倍壓技術，達到隔離、雙向轉換與交錯控制，因架構對稱交錯特性，使輸入漣波小。此外，透過回收漏電感的能量，使升壓模式與降壓模式中主動開關達到柔性切換，利用交錯式特性使平均電流降低與變壓器操作在I、III象限，藉此提高轉換器效率，適合應用於綠能系統中。在本論文中對所提之隔離具雙向之交錯式電力轉換器進行理論分析、公式推導及動作原理分析、非理想分析。並且透過模擬軟體與硬體實作，驗證所提出轉換器架構之正確性與可行性。

Development of a soft-switch interleaved isolated bidirectional converter is proposed in the thesis. The proposed topology is derived from traditional SEPIC converter. By integrating with high frequency transformer and switched capacitor into power stage, the proposed converter can achieve the merits of isolation, bidirectional transmission and interleaved control. In addition, the proposed converter processes the advantages of symmetric interleaved architecture and small input ripple. By recycling the energy in the inductors, the active switches can be switched under soft-switching transition. The interleaved characteristic declines the average current and ensures the control of transformer can be operated in quadrant I and quadrant III. It is significant to largely improve the conversion efficiency and appear the flexibility of this converter to apply on renewable energy systems. Theoretical analysis, formula derivation, operation principle and non-ideal analysis of the proposed converter is described in the thesis. Moreover, experiment result and software simulation collectively validate the correctness and feasibility of the proposed converter.

摘要.....i
ABSTRACT.....ii
誌謝.....iii
目錄.....iv
表格清單..... vi
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.....3
第二章 雙向直流/直流電能轉換器應用與簡介.....4
2.1 雙向直流/直流轉換器應用.....4
2.1.1 獨立型(Stand-Alone)太陽光電系統.....4
2.1.2 混合式電動汽車.....5
2.2 雙向電能轉換器之簡介.....5
第三章 新型隔離式雙向直流/直流轉換器.....8
3.1 所提出轉換器之介紹.....8
3.2 動作原理與操作模式.....9
3.2.1 升壓模式.....9
3.2.2 降壓模式.....16
3.3 穩態分析.....22
3.3.1 升壓模式.....23
3.3.2 降壓模式.....40
3.4 設計注意事項.....57
3.4.1 升壓模式.....58
3.4.2 降壓模式.....60
第四章 軟體模擬與實驗結果.....62
4.1 模擬與實驗波形.....62
4.2 升壓模式.....63
4.3 降壓模式.....68
4.4 轉換器效率.....73
4.5 性能比較.....75
第五章 結論與未來研究方向 .....77
5.1 結論.....77
5.2 未來研究方向.....77
參考文獻.....78

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