臺灣博碩士論文加值系統

為了改善傳統矽鋼片變壓器之體積大、重量重及價格高等缺點，本文提出一數位控制雙向隔離型交流-交流轉換器，其主要硬體電路共分為三級：交流-直流轉換器、直流-直流轉換器及直流-交流變流器。在交流-直流轉換器部分是利用內電流控制器使輸入電流與輸入電壓保持同相位達到功率因數校正之功能，再利用外電壓控制器使DC電壓能穩定在設定電壓值。在直流-直流轉換器部分使用高頻變壓器來作隔離，並控制高頻變壓器高低壓兩側之電壓相移角度，來控制輸出功率與DC電壓。在直流-交流變流器部分利用電壓控制器使其輸出為固定電壓頻率之交流電壓。最後，建立一套110/55V 350VA系統雛形，由實驗結果驗證雙向隔離型交流-交流轉換器之可行性。

In order to improve the shortcomings of the large size, heavy weight, and high price of traditional silicon steel transformers, an isolated bidirectional AC-AC converter is proposed. The proposed bidirectional AC-AC converter with galvanic isolation is composed of an AC-DC converter, a DC-DC converter, and a DC-AC inverter. The AC-DC converter adopts an internal current controller to achieve power factor correction, and uses an external voltage controller to control DC bus voltage at the desired value. The DC-DC converter uses a high-frequency transformer for electrical isolation, where the primary and secondary voltages of the high-frequency transformer are controlled with a phase shift angle voltage to control the output power and DC voltage of the DC-DC converter. A DC-AC inverter is used as a voltage controller to obtain a constant voltage and frequency output voltage as an AC voltage. Finally, a 110/55V 350VA experimental prototype is built to demonstrate the performance of the proposed technique.

摘要 I
ABSTRACT II
致謝 III
目 錄 IV
圖目錄 VII
表目錄 XI
第一章 緒論 1
1.1 研究背景與動機 1
1.2 論文大綱 2
第二章 雙向轉換器架構簡介 3
2.1 雙向交流-直流轉換器與直流-交流轉換器架構 3
2.1.1 半橋式架構 3
2.1.2 全橋式架構 4
2.1.3 二極體箝位架構 5
2.1.4 電容箝位架構 6
2.2 雙向直流-直流轉換器架構 7
2.2.1 半橋配合高頻變壓器架構 7
2.2.2 全橋配合高頻變壓器架構 7
2.2.3 應用於超級電容系統之全橋架構 8
2.2.4 應用於電池充/放電系統之低功率零電壓半橋架構 8
2.3 其它多級轉換器之應用 9
2.3.1雙向交流-直流轉換器 9
2.3.2雙向直流-交流轉換器 10
第三章 系統介紹 11
3.1 系統基本架構及功能 11
3.2 直流-交流變流器 13
3.3 交流-直流轉換器 22
3.3 直流-直流轉換器 30
3.4 控制器設計 33
3.4.1直流-交流變流器 33
3.4.2交流-直流轉換器 36
第四章 系統軟硬體規劃 42
4.1 數位信號處理器 42
4.1.1 脈波寬度調變產生器 43
4.1.2 類比/數位轉換器 49
4.1.3 輸入捕捉 50
4.2 雙向隔離型交流-交流轉換器實驗電路 52
4.2.1 功率級(Power stage) 52
4.2.2 閘極驅動電路 52
4.2.3 零點偵測電路 53
4.2.4 電流迴授電路 53
4.2.5 電壓迴授電路 54
4.2.6 電壓提升電路 54
4.3 交流-直流轉換器之軟體規劃 55
4.3.1 電流控制流程 57
4.3.2 ADC中斷副程式 58
4.3.3 市電電壓零點中斷副程式 58
4.4 直流-直流轉換器與直流-交流變流器之軟體規劃 59
4.4.1電壓控制流程 61
4.4.2 ADC中斷副程式 61
第五章 模擬與實驗結果 63
5.1 交流-直流轉換器 63
5.2 直流-直流轉換器 66
5.3 直流-交流變流器 69
5.4 整體效率 70
第六章 結論與未來研究方向 71
6.1 結論 71
6.2 未來研究方向 71
參考文獻 72

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