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研究生:王律智
研究生(外文):Lyu-Jhih Wang
論文名稱:併網型風力發電轉換器之研製
論文名稱(外文):Design and Implementation of Power Converters for Grid-Connected Wind Generator
指導教授:華志強華志強引用關係
學位類別:碩士
校院名稱:國立雲林科技大學
系所名稱:電機工程系碩士班
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2013
畢業學年度:101
語文別:中文
論文頁數:78
中文關鍵詞:風力發電機最大功率追蹤市電併網低電壓穿越
外文關鍵詞:grid-connectedLVRTMPPTwind generator
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本文提出一具低電壓穿越特性之風力發電併網型電力轉換系統,系統由風力發電機、直流升壓轉換器與全橋換流器建構而成。系統的電力來源為風力發電機,因此需利用最大功率追蹤法及電力電子轉換器,使風力發電機輸出為最大功率;並利用全橋換流器將直流側電壓轉換成與市電電壓同頻率同相位之交流電供給負載。系統以數位訊號處理器TMS320F2407作為控制核心,實際製作一額定負載800 W之風力轉換系統。 本文另一個特點為低電壓穿越之特性測詴,系統所使用的風力發電機為永磁同步發電機,藉由控制直流鏈電壓使得電網電壓驟降得以保持功率帄衡。在市電併網端也具有過電壓保護、欠電壓保護。最後經由實驗結果驗證,本文所提出之理論與方法是可行的。
This thesis proposes a power converter with a low-voltage ride-through (LVRT) characteristic for grid-connected wind generator. The proposed system consists of a wind generator, a boost converter, and a full-bridge inverter. The wind generator is the main power source of the system. Therefore, it needs to use a maximum power point tracking (MPPT) method and a power converter to obtain the maximum power of wind generator. And a full-bridge inverter is used to convert dc bus voltage into ac voltage which is the same with utility in order to provide for load. A digital signal processor is applied for the system controller, and a 800W wind energy conversion system is built. Another feature of the proposed system is the characteristics of LVRT, a permanent magnet synchronous generator is used as the wind generator, and a dc-link voltage is controlled to overcome the voltage sag. Moreover, the grid-connected side have over-voltage and under voltage protections. Finally, the proposed system has been implemented for experimental verification.
中文摘要 i
英文摘要 ii
目錄 iii
表目錄 v
圖目錄 vi
第一章 緒論 1
1.1研究動機 1
1.2研究背景 2
1.3內容大綱 4
第二章 風力發電介紹 5
2.1風力發電 5
2.2低電壓穿越 17
第三章 電力轉換電路分析 20
3.1系統架構 20
3.2直流-直流轉換器 21
3.3換流器電路架構 27
第四章 系統軟體規劃與硬體設計 33
4.1系統控制流程 33
4.2程式流程 37
4.3系統周邊硬體電路設計 41
第五章 模擬與實驗結果 45
5.1系統規格 45
5.2風力發電機特性 47
5.3直流升壓轉換器測試 52
5.4單相全橋換流器測試 57
5.5系統整合測試 61
5.6同相與併網測試 64
5.7系統保護機制 67
5.8低電壓穿越特性測試 69
第六章 結論與未來研究方向 71
6.1結論 71
6.2未來研究方向 72
參考文獻 73
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