臺灣博碩士論文加值系統

近年來隨著科技的進步，工廠設備所需求的供電品質也越來越高，尤其是在電子產業。為克服虛功所造成種種之問題，使得用電品質下降；如何在現有的環境上發展出可讓系統穩定且維持良好供電品質的補償器，實為重要之課題，有鑑於此，本論文擬研究靜態同步補償器，以改善電壓品質。
本論文採取數位式的控制系統架構，以TI系列之DSP (TMS320C31)為處理器搭配可規劃邏輯元件(CPLD)等相關週邊電路來完成靜態同步補償器的硬體控制核心；以靜態同步補償器的電路架構推導出控制法則，變流器以VSI架構配合著外部數位式三角波完成SPWM切換，來達成系統之電壓控制補償。本論文中以電腦模擬和實作的結果來驗證所提的方法可以有效地補償電壓。

In a distribution system, more and more manufacturing factories, especially in electronic industry, demand higher quality of supply voltage recently. In this thesis, a static synchronous compensator (STATCOM) is designed in order to have better voltage profile on the customer side.
The control kernel of the digital control system architecture for static synchronous compensators is based on a TI-DSP processor (TMS320C31) with Complex Programmable Logic Device IC (CPLD) and it’s peripheral circuit. The control rule is derived from the circuit prototype of the static synchronous compensator. The power stage is implemented using a voltage-sourced inverter (VSI) with sinusoidal pulse width modulation (SPWM) of external digital tri-wave circuit. With the derived control rules, the compensator can be used to control the system voltage effectively. Then from results of simulations and experiments, it is found that the system voltage can be compensated more effective by the proposed static synchronous compensator.

第一章 緒論 ……………………………………………………………1
1.1 研究背景與動機………………………………………………1
1.2 現有相關文獻概況……………………………………………2
1.3 研究方法與目的………………………………………………5
1.4 論文內容介紹…………………………………………………6
第二章 靜態同步補償器分析…………………………………………8
2.1 前言……………………………………………………………8
2.2 靜態同步補償器原理…………………………………………8
2.2.1 電壓穩定度……………………………………………10
2.2.2暫態穩定度…………………………………………….12
2.3 靜態同步補償器電路分析……………………………………14
2.3.1 電壓源型式變流器之基本工作原理…………………17
2.3.2 直流電容器充放電分析………………………………20
2.3.3 補償器特性分析………………………………………22
2.4 元件參數決定及訊號量測……………………………………26
2.4.1 電容器電壓與電容值設計……………………………26
2.4.2 補償器線路電感器的設計……………………………28
2.4.3 弦波信號峰值檢測法…………………………………29
第三章 靜態同步補償器之數學模型…………………………………34
3.1 前言……………………………………………………………34
3.2 瞬時虛功電流…………………………………………………34
3.3等效電路之推導………………………………………………37
第四章 靜態同步補償器之實體製作…………………………………45
4.1 前言……………………………………………………………45
4.2 硬體電路製作…………………………………………………45
4.2.1主要硬體架構……………………………………………46
4.2.2 同步控制電路…………………………………………49
4.2.3 資料轉換(A/D)電路設計………………………………51
4.2.4 鎖相電路設計…………………………………………54
4.2.5 數位式三角波設計……………………………………58
4.2.6 互鎖電路設計…………………………………………62
4.2.7 驅動電路設計…………………………………………65
4.3 軟體程式規劃…………………………………………………71
4.3.1 軟體簡介………………………………………………71
4.3.2 軟體程式之規劃設計…………………………………72
第五章 靜態同步補償器之實驗結果…………………………………75
5.1 前言……………………………………………………………75
5.2 實驗結果與討論………………………………………………75
5.2.1 模擬實際系統之負載電壓為0.95pu…………………76
5.2.2 模擬實際系統之負載電壓為0.92pu…………………80
5.2.3 模擬實際系統之負載電壓為0.90pu…………………84
5.2.4實作系統之負載電壓為0.90pu………………………89
第六章 結論……………………………………………………………93
參考文獻………………………………………………………………95

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