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研究生:吳永興
研究生(外文):Yung-Hsing Wu
論文名稱:多階變流器在動態電壓調整器之研究
論文名稱(外文):Study of Multilevel Inverter in Dynamic Voltage Restorer
指導教授:林伯仁
指導教授(外文):Bor-Ron Lin
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:2004
畢業學年度:92
語文別:中文
論文頁數:136
中文關鍵詞:動態電壓調整器多階變流器
外文關鍵詞:DVRMultilevel inverter
相關次數:
  • 被引用被引用:5
  • 點閱點閱:96
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  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
近年來,隨著高科技產業的蓬勃發展,導致各種產業不同類型生產線的不斷擴張。然而,科技愈進步,儀器設備等電子產品對於電力品質的要求愈嚴格,此外,非線性負載數量倍增的速度,造成電力系統污染問題日益嚴重。由此觀之,國家整體電力品質正逐漸穩定的衰退,而如何提高並確保電力品質,已是當務之急與現今重要的研究課題。

在電力品質相關研究領域之中,停電並不是最主要的問題癥結,電力擾動現象例如:電壓驟降、電壓突升、諧波失真、電壓閃爍、電磁雜訊干擾、頻率變動、相位偏移,三相電壓不平衡與瞬間停電等各種暫態情況才是問題的焦點。

本論文基於上述現象,研究提出動態電壓調整器的架構,來補償現今許多電力擾動的暫態情形,以達到對於電力系統電壓調整之目標。為了驗證本論文之可行性,將運用Matlab/Simulink來進行實驗的模擬,以期印證本論文所提出之系統性能。
In recent years, the booming development of the high-tech industry, results in the production line extend continuously at the different areas. However, the power quality limitation or requirement of the electronic instruments and equipments request is more strict. In addition, the widely use of the nonlinear loads generate the serious power pollution into the electric power system. Therefore, it is an important issue to increase the power quality and insure the system stability.

In the related research topics of electric power quality, power fail is not the most important problem, the phenomemon of electric power disturbance, voltage sags, voltage swell, voltage harmonic distortion, voltage flickers, electromagnetic interence, the fluctuation of frequency, phase misregistration, the unbalance of three-phase voltages and the momentary of power failure is the main concern of power quality.

This thesis studies a structure of the dynamic voltage restorer based on a series connection of H-bridge cells to improve several transient phenomenas of electric power disturbances.

Simulations are presented to verify the effectiveness of the proposed control scheme.
中文摘要 ------------------------------------------------------------------i
英文摘要 ------------------------------------------------------------------ii
誌謝 ------------------------------------------------------------------iv
目錄 ------------------------------------------------------------------v
表目錄 ------------------------------------------------------------------viii
圖目錄 ------------------------------------------------------------------ix
符號說明 ------------------------------------------------------------------xv
一、 緒論--------------------------------------------------------------1
1.1 研究背景與動機----------------------------------------------------1
1.2 論文綱要----------------------------------------------------------5
二、 理論基礎與分析----------------------------------------------------6
2.1 前言--------------------------------------------------------------6
2.2 電壓驟降(Voltage Sags)--------------------------------------------7
2.3 諧波(Harmonics)---------------------------------------------------11
2.4 電壓閃爍(Voltage Flickers)----------------------------------------12
2.5 電磁干擾(Electromagnetic Interence)-------------------------------13
2.6 電壓驟升(Voltage Swells)------------------------------------------14
2.7 短暫電力中斷------------------------------------------------------15
2.8 三相不平衡--------------------------------------------------------15
2.9 結論-----------------------------------------------------16
三、 動態電壓調整器(DVR)-----------------------------------------------17
3.1 前言--------------------------------------------------------------17
3.2 現行電力品質改善設備----------------------------------------------17
3.3 近年來解決電壓不穩定的趨勢----------------------------------------22
3.4 動態電壓調整器(DVR)架構與控制方塊---------------------------------24
3.5 結論--------------------------------------------------------------25
四、 多階變流器--------------------------------------------------------27
4.1 前言--------------------------------------------------------------27
4.2 變流器------------------------------------------------------------27
4.3 多階變流器--------------------------------------------------------28
4.3.1 階數的定義--------------------------------------------------------28
4.4 多階變流器電路架構分析--------------------------------------------29
4.5 PWM脈波寬度調變---------------------------------------------------30
4.6 多階變流器PWM策略-------------------------------------------------32
4.7 多階變流器開關模式分析--------------------------------------------34
五、 電路設計----------------------------------------------------------43
5.1 前言--------------------------------------------------------------43
5.2 電路架構分析------------------------------------------------------43
5.2.1 多階變流器開關元件切換狀態卡諾圖化簡------------------------------43
5.2.2 數學模型推導------------------------------------------------------47
5.3 電路元件參數設計--------------------------------------------------48
5.3.1 輸出濾波電容------------------------------------------------------48
5.3.2 輸出濾波電感------------------------------------------------------49
5.3.3 開關元件的選擇----------------------------------------------------50
5.3.4 耦合變壓器之選擇--------------------------------------------------51
5.4 系統控制架構------------------------------------------------------51
5.5 電壓及電流控制器分析----------------------------------------------54
5.5.1 電流控制器之 值---------------------------------------------------54
5.5.2 電壓控制器之 及 值------------------------------------------------56
5.6 動態電壓調整器(DVR)補償容量之計算---------------------------------59
六、 模擬結果----------------------------------------------------------60
6.1 前言--------------------------------------------------------------60
6.2 線性負載之模擬結果------------------------------------------------60
6.2.1 正常供電----------------------------------------------------------61
6.2.2 諧波失真----------------------------------------------------------63
6.2.3 電壓驟降----------------------------------------------------------66
6.2.4 三相不平衡--------------------------------------------------------68
6.2.5 電壓突升----------------------------------------------------------71
6.2.6 短暫電力中斷------------------------------------------------------73
6.2.7 電壓閃爍----------------------------------------------------------76
6.2.8 相位偏移----------------------------------------------------------78
6.2.9 多種電力擾動------------------------------------------------------81
6.3 線性負載之模擬結果------------------------------------------------83
6.3.1 正常供電----------------------------------------------------------84
6.3.2 諧波失真----------------------------------------------------------86
6.3.3 電壓驟降----------------------------------------------------------89
6.3.4 三相不平衡--------------------------------------------------------91
6.3.5 電壓突升----------------------------------------------------------94
6.3.6 短暫電力中斷------------------------------------------------------96
6.3.7 電壓閃爍----------------------------------------------------------99
6.3.8 相位偏移----------------------------------------------------------101
6.3.9 多種電力擾動------------------------------------------------------104
6.4 結論--------------------------------------------------------------106
七、 結論與未來研究----------------------------------------------------107
7.1 結論--------------------------------------------------------------107
7.2 未來研究----------------------------------------------------------107
參考文獻 ------------------------------------------------------------------109
附錄A 回授控制系統之複習------------------------------------------------111
A.1 控制問題-------------------------------------------------111
A.2 穩定度---------------------------------------------------111
A.3 羅斯-赫維茲穩定度準則------------------------------------112
A.4 比例積分微分設計-----------------------------------------113
自傳 ------------------------------------------------------------------114
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