臺灣博碩士論文加值系統

近年來，由於石化資源日漸短缺，因此產官學研各界無不積極研究如風力、太陽能和燃料電池等潔淨能源，且發展出各種再生能源發電系統。在各類潔淨能源中，燃料電池不僅具有高能量密度、大電流輸出能力以及高效率操作的優點，燃料電池技術的快速發展也使得燃料電池發電系統應用有顯著的進展。然而在各種不同負載、溫溼度和電化學反應條件下，燃料電池係低壓輸出且會有相當大的輸出電壓範圍變化特性，因此必須採用一種昇壓電能轉換器，將燃料電池發電系統轉換為高壓輸出。針對適用於燃料電池發電系統之高效能隔離多相式電能轉換器加以研究和實現，同時也設計了數位控制器以協調控制多相電能模組間的交錯式並聯操作。最後，本論文模擬、實作與測試一部10 kW轉換器雛型電路，以驗證所研究架構與控制策略之可行性。

Recently, clean energy resources, such as wind turbines, photovoltaic systems or fuel cells, have been exploited for developing renewable electric power generation systems. Among them, the rapid advances in fuel cell technology have enabled the significant developments in fuel cell power system. The fuel cells feature numerous advantages, such as high energy density, high current output ability, and high-efficiency operation. However, the fuel cell stacks present a low voltage output and a wide range of voltage variations under different load, temperature, humidity and electrochemical reaction conditions. A step-up power converter is therefore applied to obtain a high output voltage from the fuel cell system. A high-performance isolated multi-phase power converter for fuel cell power systems is studied and implemented. A digital controller is also designed to perform the interleaved operation of the paralleled multi-phase power modules. Finally, a 10-kW converter prototype is implemented and tested to verify the feasibility of the studied topology and control strategy.

摘　要 I
Abstract II
誌　謝 III
目 錄 IV
圖索引 VII
表索引 XII
第一章 緒論 1
1.1 前言 1
1.2 研究背景 3
1.3 研究目的 7
1.4 本論文架構 9
第二章 燃料電池 10
2.1 燃料電池發展史 10
2.2 燃料電池發電原理與特點 12
2.3 各種燃料電池運用與比較 16
第三章 全橋式升壓型轉換器動作原理與分析 20
3.1 電壓饋入全橋式轉換器動作原理與分析 21
3.1.1 基本動作原理 21
3.1.2 連續導通模式之穩態分析 23
3.1.3 CCM與DCM之邊界條件 28
3.2 電流饋入全橋式轉換器動作原理與分析 29
3.2.1 基本動作原理 29
3.2.2 連續導通模式之穩態分析 31
3.2.3 CCM與DCM之邊界條件 35
3.3 兩種輸入模式之全橋式升壓型轉換器比較 37
3.4 非理想條件下電流饋入全橋式升壓型轉換器 39
第四章 電路設計製作 42
4.1 電路設計流程 42
4.1.1 電路規格 42
4.1.2 變壓器設計 43
4.1.3 電感器設計 45
4.1.4 輸出儲能濾波電容器設計 46
4.1.5 功率電晶體的選用 47
4.1.6 橋式整流二極體的選用 48
4.2 緩振電路設計 48
第五章 控制系統分析與設計 51
5.1 數位補償器設計流程 52
5.2模組並聯策略 55
5.3數位訊號處理器TMS320F2808之簡介與軟體流程規劃 58
第六章 模擬與實驗結果討論 63
6.1 電路模擬 63
6.1.1 單模組電流饋入全橋式升壓轉換器模擬 64
6.1.2 四模組並聯電流饋入全橋式升壓轉換器模擬 68
6.2 電路實測波形 70
6.2.1單模組電流饋入全橋式升壓轉換器實測 70
6.2.2四模組電流饋入全橋式升壓轉換器並聯實測 77
6.3 轉換效率量測 82
第七章 結論與未來展望 86
7.1 結論 86
7.2 未來展望 87
參考文獻 89

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