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研究生:陳要廷
研究生(外文):Yao-Ting Chen
論文名稱:具功率控制與低電壓穿越之三相市電併聯換流器研製
論文名稱(外文):Three-Phase Grid-Connected Inverter with Power Control and Low-Voltage Ride Through
指導教授:陳耀銘
口試委員:陳德玉邱煌仁賴炎生
口試日期:2013-06-26
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:電機工程學研究所
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:108
中文關鍵詞:網路通訊虛功低電壓穿越市電併聯三相換流器EIA-485電壓量值判別
外文關鍵詞:Communication through internetReactive powerLVRT(Low-Voltage Ride through)Grid-connectedThree-phase inverterEIA-485Grid voltage calculation
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本文旨在研製一組具網路通訊實虛功控制與低電壓穿越功能之三相市電併聯換流器。利用三相三線式電壓源型換流器配合直交軸轉換控制,輸出三相交流電流進入市電,達到控制輸出實虛功之目的。並研製一組EIA-485網路通訊介面,讓使用者可以由電腦端之人機介面透過網路遠端,對市電併聯換流器下達實虛功命令。另外,為達成低電壓穿越功能,本論文提出一種不需透過相位鎖定迴路,即可精準且快速判別市電電壓量值的方法,達到極低電壓降之情境下,市電併聯換流器皆可達到持續與系統併接的低電壓穿越功能。並且於市電電壓回復時,能保持正確同步併網運作。最後,以實測波形來驗證本文所提出的具網路通訊實虛功控制與低電壓穿越功能之三相市電併聯換流器的特性與功能。

關鍵詞:網路通訊、虛功、低電壓穿越、市電併聯、三相換流器、EIA-485、電壓量值判別


A three-phase grid-connected inverter, which is capable of controlling real/reactive power via internet and achieving low-voltage ride through (LVRT) function, is proposed in this thesis. By adopting the strategy of direct quadrature transformation to control the three-phase current injected into the utility line, active/reactive power control can be achieved successfully by using the three-phase three-wire voltage source inverter. An EIA-485 communication interface is also developed for users to give the active/reactive power commend via internet.
Besides, in order to achieve the LVRT function, a new method is proposed to calculate the accurate grid voltage without using the conventional phase-locked loop (PLL) so that the three-phase inverter can remain connecting to the utility line during the most severe voltage drop scenario. The proposed strategy also allows the three-phase inverter to maintain grid-connected operation during the voltage recovery period.
Finally, experimental results measured from a prototype circuit are presented to verify the performances of the proposed three-phase grid-connected inverter with real/reactive power and LVRT capability.


Keywords:Communication through internet、Reactive power、LVRT(Low-Voltage Ride through)、Grid-connected、Three-phase inverter、EIA-485、Grid voltage calculation


口試委員會審定書 #
誌謝 i
摘要 ii
Abstract iii
目錄 iv
圖目錄 vii
表目錄 xi
第一章 緒論 1
1-1 研究動機與目的 1
1-2 文獻回顧 2
1-3 論文大綱 3
第二章 市電併聯系統簡介 4
2-1 市電併聯換流器 4
2-1-1 單相換流器電力級架構 4
2-1-2 三相換流器電力級架構 7
2-1-3 換流器之電流控制法則 9
2-1-3-1 磁滯電流控制 10
2-1-3-2 正弦脈寬調變電流控制 11
2-1-3-3 預測式電流控制 12
2-2 併網法規 13
2-2-1 規範簡介 13
2-2-2 孤島效應偵測 14
2-2-3 低電壓穿越運作 15
第三章 本論文之市電併聯換流器系統架構 19
3-1 三相換流器 19
3-1-1 電力級架構 19
3-1-2 正弦脈寬調變切換技術 20
3-1-3 三相換流器數學模型 21
3-2 功率控制架構 23
3-2-1 三相座標軸與直交軸轉換 23
3-2-2 三相換流器實虛功控制 29
3-2-3 低電壓穿越控制策略 29
3-3 EIA-485通訊介面 33
第四章 系統軟硬體電路 35
4-1 換流器控制級硬體電路 36
4-1-1 微控制器週邊與回授電路設計 36
4-1-2 三相市電併聯換流器之電壓與電流偵測電路 41
4-2 EIA-485串列式通訊介面硬體電路 43
4-2-1 EIA-485訊號傳送與接收電路 44
4-2-2 自動時序控制電路 44
4-2-3 電壓準位電路 45
4-2-4數位轉類比轉換電路 46
4-3 系統軟體與控制流程圖 48
4-3-1 三相換流器系統 48
4-3-1-1 微控制器介紹(TMS320F28035) 48
4-3-1-2 市電併聯換流器控制流程 49
4-3-2 EIA-485串列式通訊介面 55
4-3-2-1 微控制器介紹(dsPIC30F2020) 55
4-3-2-2 通訊介面程式流程 56
第五章 硬體實作與波形驗證 58
5-1 三相市電併聯換流器 58
5-2 網路通訊實虛功控制 68
5-2-1 網路通訊介面實現 68
5-2-2 人機介面實現 69
5-2-3 實、虛功輸出之變動測試 70
5-3 低電壓穿越功能測試 76
第六章 結論與未來研究方向 101
6-1 結論 101
6-2 未來研究方向 102
參考文獻 103
附錄 108



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