臺灣博碩士論文加值系統

本論文提出「可漏感能量回收之交錯式隔離型雙向轉換器」，應用於轉換電池電壓與直流匯流排電壓(VDC_BUS)。當雙向DC-DC轉換器被操作在升壓模式時，輸入為電池電壓，輸出為直流匯流排電壓(VDC_BUS)，其電路特性為利用交錯動作方式搭配耦合電感與半橋倍壓以實現所需之電壓增益轉換。該轉換器加上漏感能量回收電路以減少切換損失，無需額外加上開關與控制即可實現，將有效抑制功率開關之電壓突波及提升轉換器效率；當被操作在降壓模式時，輸入為直流匯流排(VDC_BUS)，輸出為電池電壓，電路特性為交錯動作方式並運用半橋轉換器特性與耦合電感組成。首先論文中將介紹數種隔離與非隔離之雙向DC-DC轉換器，並探討所提出電路之動作原理與穩態電路分析，以驗證電路可達到雙向傳送能量之功能。最後實作一台400 W、低壓側電池電壓為48 V、高壓側電壓為400 V之交錯式隔離型雙向電力轉換器，升壓模式最高效率達95.61%，降壓模式最高效率達95.43%。

This thesis presents an isolated bidirectional interleaved dc-dc converter for battery-based distributed generation system. The voltage level of battery is boosted for standard DC-bus voltage by coupled inductor techniques and half-bridge voltage-multiplier, and vice versa. Furthermore, the energy stored in leakage inductance is inherently eliminated without any snubber or clamped circuits. In the thesis, several traditional bidirectional converters are briefly reviewed in advance, and then the operational principle and steady-state analysis of proposed converter is discussed in following chapters. A 400-W prototype with 48 V–400 V is built and tested to verify the feasibility of the proposed converter. Finally, the measurement results in buck and boost modes indicate that the peak efficiencies are up to 95.43% and 95.61%, separately.

中文摘要........................................i
英文摘要........................................ii
誌謝............................................iii
目錄............................................iv
表索引..........................................vi
圖索引..........................................vii
第一章. 緒論....................................1
1.1 研究動機....................................1
1.2 論文大綱....................................3
第二章. 雙向直流/直流轉換器簡介.................4
2.1雙向直流/直流轉換器..........................4
2.1.1非隔離型雙向轉換器......................4
2.1.2隔離型雙向轉換器........................5
第三章. 可漏感能量回收之交錯式隔離型雙向轉換器..18
3.1主電路架構..................................18
3.2升壓模式之動作原理與穩態分析................20
3.2.1電路動作原理...........................21
3.2.2電壓增益比.............................36
3.2.3漏感能量回收電路分析...................37
3.2.4電壓與電流應力.........................43
3.2.4儲能元件分析...........................46
3.3降壓模式之動作原理與穩態分析 ................50
3.3.1電路動作原理...........................51
3.3.2電壓增益比.............................66
3.3.3電壓與電流應力.........................67
3.3.4儲能元件分析...........................71
3.4雙向DC-DC轉換器比較..........................73
第四章. 電路設計與實驗結果......................75
4.1 電路設計....................................75
　　4.1.1 電路規格..............................75
4.2 實驗結果....................................77
4.2.1 升壓實測波形...........................79
4.2.2 降壓實測波形...........................88
4.2.3 電路轉換效率量測.......................96
第五章. 結論與未來研究方向......................98
5.1 結論 ........................................98
5.2 未來研究方向 ................................99
參考文獻........................................101

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