臺灣博碩士論文加值系統

本論文旨在研製應用雙組昇降壓轉換器建構數位控制式變流器系統，以雙組昇降壓轉換器併合來呈現變流器之特性。各組昇降壓轉換器輸出均為具直流準位且大於零之弦波交流電壓，當兩組昇降壓轉換器輸出相位差180°時，負載端可得到與市電電壓大小110Vrms和頻率60Hz相符之正弦電壓，故在控制上須具有高動態響應速度，使開關能在預期之操作點快速切換，並以數位信號處理器為控制核心，實現變流器系統之數位化控制。控制策略採用雙迴圈控制方式，外迴圈以電壓控制模式，使輸出達到穩壓之效果；而內迴圈則藉由電流控制模式，提高系統穩定度，並採用定頻方式修正開關導通率，使變流器輸出達到預期之弦波電壓。最後，本文以數位信號處理器TMS320LF2407A為核心，實際完成一額定輸出功率300W，輸出電壓110Vrms/60Hz之變流器系統。

The purpose of the thesis is to study on digital-control inverter system with dual buck-boost converter, using the dual buck-boost converter combined together to display the properties of inverter. When the dual buck-boost converter’s output sinusoidal voltage are larger than zero volt with dc offset and one converter’s output sinusoidal voltage is different from the other by 180 degrees out of phase, the load gains the 110Vrms/60Hz sinusoidal voltage. So the system should be high-dynamic under control to make converter’s switch to work with variable operating point and using the DSP to reach digital control inverter system. The control method is using double loop control. The outer loop is using voltage control mode to reach output voltage constantly, and the inner loop is using current control mode to make the system more stable. By controlling the switching on the constant frequency to let the output voltage will reach what we want. Finally, the thesis is using the DSP TMS320LF2407A to reach the digital-control inverter system. The experimental results show that the inverter system can supply 300W, and the output voltage is 110Vrms/60Hz.

中文摘要 I
英文摘要 II
誌謝 III
目錄 IV
圖目錄 VII
表目錄 X
第一章 緒論 1
1-1 研究動機 1
1-2 研究背景 2
1-3 研究方法 5
1-4 論文大綱 6
第二章 變流器架構與調變方式 7
2-1 前言 7
2-2 變流器電路架構 7
2-3 變流器調變技術 10
2-3-1 正弦式脈波寬度調變 10
2-3-2 磁滯調變 12
2-4 雙組轉換器介紹 13
2-4-1 降壓型變流器 13
2-4-2 昇壓型變流器 15
2-4-3 昇降壓型變流器 16
2-4-4 各架構變流器之整理 17
第三章 系統電路分析與設計 18
3-1 前言 18
3-2 整體系統架構 18
3-3 變流器系統分析 19
3-3-1 變流器動作原理 19
3-3-2 變流器大訊號分析 26
3-3-3 變流器控制機制 33
3-4 降壓轉換器分析 34
3-4-1 降壓轉換器動作原理 35
3-4-2 降壓轉換器控制機制 37
第四章 系統軟體規劃與硬體電路設計 39
4-1 前言 39
4-2 系統軟體規劃 39
4-2-1 數位信號處理器(TMS320LF2407A)簡介 40
4-2-2 脈波寬度調變設置 42
4-2-3 系統程式規劃 43
4-3 系統硬體電路設計 49
4-3-1 功率開關驅動電路 49
4-3-2 直流電壓感測電路 50
4-3-3 交流電壓感測電路 51
4-3-4 電流感測電路 52
4-4 整體系統架構電路圖 53
第五章 系統實驗與結果 54
5-1 前言 54
5-2 系統規格 54
5-3 開關調變波形 56
5-4 前級降壓轉換器 57
5-4-1 輸入電壓變動實驗 57
5-4-2 工作區實驗 58
5-4-3 負載變動實驗 60
5-5 單相變流器 62
5-5-1 單相變流器SIMPLIS模擬 62
5-5-2 工作區實驗 63
5-5-3 負載變動實驗 66
第六章 結論與未來研究方向 68
6-1 結論 68
6-2 未來研究方向 69
參考文獻 70

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