臺灣博碩士論文加值系統

　　本論文發展一套風力用獨立自激式感應發電機之可控整流器及自激電容器切換雙重協調控制策略，以改善風力用感應發電機之輸出電壓及頻率會隨不同轉速及不同負載條件而發生變動的特性。

　　本論文中，將利用數位信號處理器控制功率級電晶體，將風力用感應發電機之交流電源轉換成穩定之直流電源給直流負載及換流器來產生穩定交流電源輸出。

　　本文之硬體架構是採用實驗室之2.2 仟瓦感應發電機組及德州儀器公司生產的TMS320F240數位信號處理器來完成實體製作，並採用三相a-b-c軸模型，結合三相感應發電機、可控整流器與可切換電容器組之模型，推導其完整數學模型來完成動態系統模擬，並與實測結果比較，以驗證本論文所提系統之可行性。

　　The aim of this thesis is to develop a coordination control between controllable converter and switched excitation capacitors for autonomous wind self-excited induction generators because both output voltage and frequency of an autonomous wind induction generator would be inherently affected by random wind speed and connected loads.

　　In this thesis, the generated AC power source of the studied wind induction generator is converted to a weal regulated DC power source by means of switching power transistors using a digital signal processor (DSP). The controlled DC power source is employed to supply dc loads and inverter which is for producing fixed AC power source.

　　A laboratory 2.2 kW induction generator driven by a brushless DC motor and a TMS320F240 DSP are practically utilized. Three-phase induction- generator model, three-phase controllable converter model, switched excitation-capacitor model are integrated to form complete system dynamic equations for the purpose of obtaining detailed simulations. It can be concluded from the simulated and experimental results that the proposed wind energy conversion system can be practically applied to the studied wind induction generators under various operating conditions.

中文摘要 I
英文摘要 II
誌謝 III
目錄 IV
圖表目錄索引 VII

符號表索引 X

第一章 緒論 1
1.1 研究背景及動機 1
1.2 系統架構 2
1.3 文獻回顧 4
1.4 內容大綱 8

第二章 實驗機組之基本原理與數學模型建立 10
2.1 感應發電機之動作原理及數學模型建立 10
2.2 自激式感應發電機獨立供應負載之數學模型建立 14
2.3 臨界電容值之分析與求解 21
2.4 實驗電機參數之實際量測參數 26
2.5 結論 31

第三章 交-直流功率轉換器之數學模型建立 32
3.1 交流對直流轉換器之三相等效電路系統模型的建立33
3.2 功率轉換系統控制器之設計 40
3.3 功率轉換系統被動元件之設計 44
3.3.1 升壓電感之設計 44
3.3.2 直流鏈電容之設計 45
3.4 結論 47

第四章 功率轉換系統之軟硬體架構 48
4.1 系統硬體架構 48
4.2 整流電路 49
4.3 取樣電路與驅動電路 50
4.3.1 電壓、電流取樣電路 50
4.3.2 電容電壓取樣電路 52
4.3.3 電壓峰值取樣電路 53
4.3.4 功率晶體驅動電路 54
4.3.5 可控電容器組驅動及取樣電路 55
4.4 控制器與控制軟體 56
4.4.1 數位信號之控制模式 58
4.4.2 系統軟體之規劃 60
4.5 結論 64

第五章 模擬與實驗結果 65
5.1 系統動態實測分析 65
5.1.1 風速變動下系統之動態實測分析 65
5.1.2 負載變動下對系統之動態實測分析 76
5.2 發電機輸入端不平衡實測分析 82
5.3 感應發電機穩態功率實測分析 85
5.4 結論 93

第六章 結論與建議 94
6.1 結論 95
6.2 未來研究方向與建議 95

參考文獻 97
附錄 102
作者自述 105

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