臺灣博碩士論文加值系統

隨著石化能源價格不斷上升，再生能源的發展日益重要，本計畫將發展一小型再生能源與配電系統間之直流/交流轉換介面，該直流/交流轉換介面包含一直流/直流轉換器與一直流/交流轉換器，該直流/直流轉換器利用脈寬調變之控制使其輸出一整流弦波電流，該直流/交流轉換器作低頻切換將直流/直流轉換器輸出之整流弦波電流轉換成一弦波電流送回配電系統，由於直流/交流轉換器採用低頻切換，可有效降低其切換損失，提高整個系統效率，且不需直流/直流轉換器與直流/交流轉換器間之漣結電容，可提高直流/交流轉換介面之可靠度，本文中將建立一直流/交流轉換介面之雛型進行實測，由實測結果驗證本文所發展之直流/交流轉換介面確實具有預期之效果。

The cost of fossil energy was rsien up, recently. This has promoted the importance of the renewable energy. A small capacity DC/AC power conversion interface for renewable energy will be developed in this thesis. This power conversion interface including a DC/DC power converter and a DC/AC power converter. The PWM modualtion strategy is used in the DC/DC power converter to generate a rectifier sinusoidal current. The DC/AC inverter, opaerated in the low switching frequency, converts the the rectifier sinusoidal current to a sinuoidal current and feeds to the utility. Because the DC/AC inverter is opaerated in the low switching frequency, it can reduce the switching loss. Hence, the power efficiency of the entire system can be increased. Moreover, the DC capacitor between the DC/DC power converter and the DC/AC inverter can be omited.This can increase the reliability of the DC/AC power conversion interface.　 A prototype is developed and tested to demonstrate the performance of the proposed DC/AC power conversion interface. The experimental results show that the proposed DC/AC power conversion interface has the expected performance.

中文摘要 Ⅰ
英文摘要 Ⅱ
誌 謝 Ⅲ目 錄 Ⅳ
圖目錄 Ⅵ
表目錄 VII
符號說明 VIII
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究方法 3
1.3 研究內容 4
第二章 電力轉換器基本原理 5
2.1 直流/直流電力轉換器 5
2.2 半橋式直流/直流電力轉換器 5
2.3 全橋式直流/直流電力轉換器 7
2.4 推挽式直流/直流電力轉換器 10
2.5 直流/交流變流器 12
2.6 半橋式變流器 13
2.7 全橋式變流器 16
2.7.1 雙極性脈寬調變切換 17
2.7.2 單極性脈寬調變切換 19
第三章 新型直流/交流轉換介面 23
3.1 再生能源發電系統 23
3.2 傳統直流/交流電力轉換介面 25
3.3 新型直流/交流電力轉換器操作原理 26
3.4 新型直流/交流電力轉換器之控制方塊 28
3.5 模擬結果 29
第四章 硬體雛型 33
4.1 直流/直流轉換器 34
4.1.2 控制電路 35
4.2 直流/交流轉換器硬體雛型 45
4.2.1 功率級電路 46
4.2.2 控制電路 46
第五章 實測結果 50
5.1 配電系統並聯運轉 50
5.2 獨立運轉 56
第六章 結論 61
6.1 未來研究方向 61
參考文獻 63

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