博碩士論文 104521091 詳細資訊




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姓名 吳孟倫(Meng-Lun Wu)  查詢紙本館藏   畢業系所 電機工程學系
論文名稱 結合雙二階廣義積分法與鎖頻迴路為基礎 之串聯式主動電力濾波器設計
(Design of Series Active Power Filter Based on Dual Second-Order Generalized Integrator and Frequency Locked Loop)
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摘要(中) 串聯式主動電力濾波器因其主要處理電力系統上電壓之電力品質的問題,故又稱為動態電壓補償器(Dynamic Voltage Restorer , DVR)。其功能為解決電力線上發生單相或多相短路而造成的驟降及其他相伴的品質問題,故主要硬體建構在三相四線式的「直流-交流轉換器」之架構,又因欲快速地做出適當的補償動作,使得在負載端所得到的電壓能維持如同原本未發生問題的電壓情況。因此,如何快速地偵測及補償將是本文著重的課題。
文中主要介紹了串聯式主動電力濾波器的基本概念、架構、補償方法,並在策略的部分做了效能及特性上的比較,且為了克服三相不平衡的情況,幾個能分析正、負相序的演算法也一併列入說明。最後,透過軟體模擬與比較來找出最佳補償方法,並且實現於數位訊號處理器和硬體迴圈,以驗證其效能和可行性。藉由觀察量測到的電壓波形訊號,可以明顯看出許多驟降問題得到改善,使負載端電壓得以維持在一定大小,以保護後端的敏感性負載。
摘要(英)
Series active power filter which is also named as ‘Dynamic Voltage Restorer (DVR)’ is mainly designed for solving the ‘sag’ or ‘swell’ phenomenon which may also accompany with other voltage quality problems on the distribution line or micro-grid system. To deal with the single or multiple phases voltage magnitude variation as well as some power quality problems, ‘three-phase four-wire’ inverter is adopted. As the sag (swell) event happening, the DVR must detect the voltage vector (both magnitude and phase), compute the appropriate quantity which is needed to be compensated, and then restore the load voltage to pre-sag condition as soon as possible.
The functions, configuration, and the comparison of compensating strategies of DVR will be presented here. In addition, some introductions of analyzing Positive-Negative Sequence component algorithm for overcoming the unbalanced sagging are included. At last, the simulations are carried out by software. In order to show the efficiency and be used in practice, the best method is realized on Digital Signal Processor (DSP) and Hardware in the Loop (HIL) experimental platform. By observing the voltage waveform, lots of sagging problem have been improved and maintained the load voltage to a standard level.
關鍵字(中) ★ 串聯式主動電力濾波器
★ 電壓驟降
★ 正負相序
★ 電力品質
關鍵字(英)
論文目次
論文摘要 iii
Abstract iv
致謝 iii
目錄 vi
圖目錄 viii
表目錄 xiv
第一章 緒論 1
1-1 研究背景與動機 1
1-2 文獻探討 3
1-3 論文大綱 4
第二章 電力品質問題介紹與現行管制標準 5
2-1 電壓諧波 6
2-2 電壓閃爍 9
2-3 電壓三相不平衡 11
2-4 電壓驟升與驟降 13
2-5 章節總結 14
第三章 串聯式主動電力濾波器原理及架構 16
3-1 系統簡介 16
3-2 系統硬體架構 17
3-3 串聯式主動電力濾波器工作原理 18
3-4 驟降、驟升偵測方法 19
3-5 補償策略 20
3-5.1 In-phase Compensation 20
3-5.2 Pre-sag Compensation 21
3-5.3 Minimum Energy Injection 21
3-6 針對三相不平衡電網電壓相位偵測方法 23
3-6.1 電壓相序分析 24
3-6.2 微分分離法 25
3-6.3 雙二階廣義積分法(DSOGI) 27
3-7 章節總結 29
第四章 模擬實驗結果 30
4-1 模擬系統建置概述 30
4-1-1 電力系統模型 31
4-1-2 控制法則 33
4-1-3 電力品質案例 36
4-2 模擬結果與探討 38
4-2.1 Case1:三相平衡驟降與驟升 38
4-2.2 Case2:單相驟降與驟升 43
4-2.3 Case3:相位跳動問題 49
4-2.4 Case4:電源端諧波 55
4-2.5 Case5:電源端間諧波 60
4-2.6 Case6:電源端電壓閃爍 66
4-2.7 Case7:電源端頻率變化 71
4-3 章節總結 77
第五章 系統架構設計與實驗結果 84
5-1 系統架構建置 84
5-2 實驗結果 91
5-2.1 Case1:三相平衡驟降 92
5-2.2 Case2:單相驟降 93
5-2.3 Case3:單相相位跳動及驟降 93
5-2.4 Case4:頻率變動及驟降 94
5-2.5 Case5:諧波及驟降 95
5-2.6 Case6:間諧波及驟降 96
5-2.7 Case7:閃爍及驟降 98
5-3 章節總結 98
第六章 結論與未來發展…………………………………..………..101
6-1 結論 101
6-2 未來研究方向 102
參考文獻 104
參考文獻
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指導教授 陳正一(Cheng-I Chen) 審核日期 2017-7-24
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