臺灣博碩士論文加值系統

由於節能減碳的需求，全球正快速發展與綠色能源相關之技術，「風」為一天然、無污染之資源，風力發電的技術與理論便成為綠色能源發展中最重要的方向與目標之一。
風力發電所使用的電機種類型式眾多，其中又以鼠籠式感應機價格較為低廉，可大量量產並安裝在風力資源豐富之地區。但由於鼠籠式感應機缺乏對無效電力控制的能力，當系統發生負載加載、切載或故障時，無法負擔支撐起系統的責任，風力不穩定時，感應機便成為整個系統中電力潮流的汙染源，影響電力品質。
為了改善上述缺點，本論文在鼠籠式感應機上串聯動態電壓調整器，控制發電機流入系統匯流排之電力潮流，改善電力品質。並在系統發生加載、切載或故障時，進行適當的補償，穩定整個系統電壓。
本論文利用MATLAB○R/Simulink/SimPowerSystems軟體模擬電力系統負載變動以及風速變動時，發電機及負載端電壓。由模擬結果發現動態電壓調整器能有效穩定發電機及負載電壓。諧波失真也都能符合台電諧波管制標準。

To Reduce emission, much effort has been devoted to the development of green energy techniques. Among the various types of green energy generations, wind energy conversion is studied in thesis.
Squirrel-cage induction generators have been widely employed for wind energy conversion due to their low costs and high reliability. However, the squirrel-cage induction generators are not capable of providing voltage regulation due to the lack of rotor excitation.
To improve the reactive power support and voltage regulation of a squirrel-cage induction generator, a dynamic voltage regulator（DVR） is designed in this thesis. Through the generation or absorption of reactive power, the DVR is capable of stabilizing the generator terminal voltage and the load voltage when the system is subject to load changes or wind speed variations.
The effectiveness of the proposed DVR is demonstrated by computer simulations using MATLAB○R/Simulink/SimPowerSystems.

誌謝 i
摘要 iii
Abstract iv
目錄 v
圖目錄 viii
表目錄 xiv
第一章 緒論
1.1 研究背景與動機 1
1.2 文獻回顧 2
1.3 風力發電機簡介 7
1.4 研究方法 9
1.5 論文內容介紹 10
第二章 基本原理與發電機簡介
2.1 補償器基本原理 11
2.1.1 電壓穩定度 13
2.1.2 暫態穩定度 14
2.1.3 電力系統振盪阻尼 15
2.2 同步旋轉座標軸轉換 16
第三章 變流器設計
3.1 前言 19
3.2 變流器理論與設計 20
3.2.1 脈波寬度調變 20
3.2.2 變流器輸出 22
3.2.3 變流器頻譜分析 22
3.2.4 三相變流器 22
3.3 其他元件參數之決定 25
3.3.1 隔離變壓器之選定 25
3.3.2 濾波電感器之選定 26
3.3.3 補償器之容量計算 27
第四章 動態電壓調整器分析
4.1 前言 29
4.2 動態電壓調整器之實虛功分析 30
4.3 動態電壓調整器之控制 33
4.3.1 數學模型建立 33
4.3.2 電壓控制迴路解耦合 36
4.3.3 電流控制迴路解耦合 38
4.3.4 反流器調制訊號 41
4.3.5 直流電壓與交流電壓迴路控制 43
4.4 動態電壓調整器之控制方塊圖 44
第五章 模擬結果與分析
5.1 前言 47
5.2 發電機參數、動態電壓調整器參數、電力系統參數 50
5.3 系統模擬 52
5.3.1 模擬（1）系統加載-穩定發電機端電壓運轉 53
5.3.2 模擬（2）系統加載-穩定責任分界點電壓運轉 72
5.3.3 模擬（3）風速變動-穩定責任分界點電壓運轉 94
5.4 結果討論 111
第六章 結論
6.1 結論 112
6.2 未來研究方向 112
參考文獻 113
作者簡介 115

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