分散式電源及微電網將在未來的電力系統扮演重要的角色，它們可改善能源使用效率、降低整體能源損耗和對環境的衝擊，並可強化系統可靠度及穩定度。然而目前分散式再生電源提供電力到電網需要經過二至三次的電源轉換方為負載使用。若將微電網或分散式電源改以直流電源直接供電，將可減少供需之間的電能轉換次數，增加電能效率。本研究利用燃料電池、儲能電池、太陽能光伏板及電力電子建置模組建立了一個直流微電網模型，透過Matlab simulink 進行模擬及實作分析。本論文探討不同電源特性的併聯技術、直流匯流排電壓及功率之控制，並根據模擬及實作結果，提出對直流微電網併網及系統整合運轉之建議。

Distributed generation (DG) and microgrid will play an essential role in the modern power system. They could improve energy efficiency, reduce losses, minimize environmental impacts and enhance power system reliability and stability. Most of the renewable energy applications would require two or three power conversions before power reaches the loads. If the power from DG could be utilized in DC form, the loss could be minimized and system efficiency is improved. Fuel cell, energy storage battery, photovoltaic and power electronic building block (PEBB) are used in this research to set up a DC microgrid. Simulation and hardware implementation are conducted. Techniques studied in this thesis include different power sources interconnection and DC bus voltage and microgrid power controls. Based on the studied results, DC mircogrid integration and system operation schemes are recommended.

論文審定書 I
致謝 II
摘要 III
Abstract IV
目錄 V
圖目錄 VII
表目錄 XIII
第一章 緒論 1
1-1 研究背景與動機 1
1-2 智慧型電網及微電網 2
1-3 分散式電源簡介 6
1-4 電力電子建置模組介紹 11
131 PEBB 操作步驟 12
132 PEBB 與自行發展之轉換器的優缺點比較 13
1-5 分散式發電之併聯相關規範 16
1-6 文獻回顧 19
1-7 論文架構 22
第二章 直流微電網電源模型建立 23
2-1 太陽能光電板模型建立 23
2-2 質子交換膜燃料電池 28
2-3 儲能電池等效電路 34
2-4 三相變流器 38
241 主動式前端整流電路架構與控制策略 38
242 靜止框轉換與同步框轉換 39
243 電流控制器 41
2-5 不同電源併聯環流問題 46
2-6 直流匯流排電壓控制 49
2-7 負載分攤控制法 61
271 主僕式控制法 61
272 電壓下降控制法 63
第三章 直流微電網建置 66
3-1 直流網電網架構與技術規範 66
3-2 PEBB 之外部電路及通訊 69
3-3 電壓下降控制法實現 75
3-4 直流電網併聯方案分析 78
3-5 直流電壓品質分析 87
第四章 直流微電網系統功能模擬與測試 90
4-1 系統功能模擬 90
411 與市電併聯運轉模式 91
412 孤島運轉運轉模式 93
413 系統故障模擬 95
4-2 實作系統功能實測 107
421 與市電併聯運轉模式 107
422 與市電解聯運轉模式 119
第五章 結論與未來研究方向 130
5-1 結論 130
5-2 未來研究方向 131
參考論文 133
附錄 138

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