臺灣博碩士論文加值系統

本論文有兩個主要研究架構：一.自激式感應發電機變頻供電系統。二.具電流型靜態虛功率補償之自激式感應發電機系統。感應發電機有設備成本較低、結構簡單、維護省、具過載與短路保護能力及高功率重量比等優點。但一般因機組容量較小，所以輸出電力會因轉速、負載及功因的變化，引起立即性的頻率及電壓變動，造成感應發電機端頻率不穩及電壓調整率較差之缺點。本論文研製之感應發電機變頻供電系統，將發電機端電壓經三相整流濾波後得一直流輸出電壓給變流器作變頻供電，因此變頻供電之輸出電壓頻率將不受發電機轉子速度影響，可依命令動態調整輸出電壓頻率至目標值。研製之電流型靜態虛功率補償感應發電機系統，依據感應發電機之負載需求及系統參數情況，提供虛功率予感應發電機系統，以抑制因負載或轉速變化而引起之電壓變動。經模擬及實作驗證，變頻供電系統可動態調整變頻輸出電壓之頻率至目標值，靜態虛功率補償發電機系統，可達到提升輸出電壓穩定度的效果。所研製完成之發電系統，對電壓及轉速變動之調適將有快速而優異的動態響應，可提昇自激式感應發電機系統之供電品質與電壓穩定度。

This thesis has two research objectives. The first objective is for a conversion power supply system of self-excited induction generator. The second is for an induction generation system with current-type static VAR compensator (SVC). An induction generator has many favorable advantages including lower setup and maintenance cost, simple construction, inherent over load and short circuit protection, and high power-weight ratio. However, there are drawbacks of the conventional induction generator. For small capacity systems, the output voltage and frequency are easily and instantaneously affected by rotational speed of rotor, system load, and the power factor. It leads that the output frequency at the generator terminal is irritable and the voltage regulation is deteriorated.
In the proposed generation system, the output voltage of the generator is converted by a three-phase converter and filtered by an LC filter. The obtained voltage is then treated as the input DC source of an inverter. As a result, the output supply frequency is independent of generator’s rotor rotational speed and can be dynamically regulated to the set-point frequency by adjust the inverter. In addition, an induction generation system with current-type static VAR compensator (SVC) is proposed. SVC is connected in parallel with excitation capacitors and used to control the reactive power at the generator terminals. Based on the load requirements and system parameters, SVC generates reactive power to the generation system and suppresses voltage variation caused by load and rotor rotational speed changes.
Simulation and experiment results show that the conversion power supply system of self-excited induction generator can dynamically regulate the frequency of output voltage to the desired set point. Moreover, the induction generator system with current-type static VAR compensator can improve the stability of output voltage. Consequently, the proposed induction generator system has fast and superior dynamic response with respect to the variations of voltage and rotational speed. Also, the supply quality and stability of the output voltage are improved.

中文摘要......................................i
英文摘要.....................................ii
誌謝.........................................iv
目錄..........................................v
圖目錄.....................................viii
表目錄......................................xii
第一章 緒論..................................1
1.1 研究背景與動機......................1
1.2 研究目的............................2
1.3 內容大綱............................2
第二章 自激式感應發電機系統理論..............3
2.1 前言................................3
2.2 感應發電機之自激發電原理............3
2.2.1 最小電容值之計算..............4
2.3 自激式感應發電機之數學模型..........8
2.4 三相變流器之原理...................11
2.5 靜態虛功率補償器之原理.............12
2.5.1 直流電感設計.................14
2.6 結語...............................15
第三章 灰色系統理論.........................17
3.1 前言...............................17
3.2 灰色系統理論簡介及分析.............17
3.3 灰色決策導論.......................18
3.3.1 決策之基本概念...............19
3.3.2 多目標灰色局勢決策...........20
3.4 灰色預測模型導論...................23
3.4.1 數據擷取.....................24
3.4.2 灰色生成.....................25
3.4.3 灰色建模.....................27
3.4.4 內涵型灰色預測模型...........29
3.5 內涵型灰色決策預測控制器設計.......31
3.5.1 灰色預測控制器結構與分析.....32
3.5.2 灰色決策動態步距模型設計.....34
3.5.3 內涵型灰色決策預測控制器架構.37
3.6 結語...............................39
第四章 系統架構及控制方法...................40
4.1 前言...............................40
4.2 變頻供電系統.......................40
4.2.1 工作原理.....................41
4.2.2 模擬方塊圖...................42
4.2.3 實驗設備.....................44
4.3 靜態虛功率補償供電系統.............45
4.3.1 工作原理.....................46
4.3.2 模擬方塊圖...................48
4.3.3 實驗設備.....................49
4.4 結語...............................52
第五章 模擬與實驗結果.......................53
5.1 前言...............................53
5.2 SEIG系統模擬及實驗.................53
5.3 變頻供電系統模擬與實驗.............56
5.4 靜態虛功率補償供電系統.............69
5.5 結語...............................82
第六章 結論與建議...........................83
6.1 結論...............................83
6.2 建議...............................84
參考文獻.....................................85
附錄A 符號彙編...............................87
附錄B 系統參數量測...........................88
附錄C 實驗設備照片...........................91
作者簡介.....................................92

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