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研究生:李權庭
研究生(外文):Cyuan-Ting Li
論文名稱:以切換式電源實現輸出電壓可調整之降壓轉換器研究
論文名稱(外文):Research the Adjustable Output Voltage of Buck Converter with Switching Power
指導教授:林水春林水春引用關係
指導教授(外文):Shui-Chun Lin
學位類別:碩士
校院名稱:國立勤益科技大學
系所名稱:電子工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2013
畢業學年度:101
語文別:中文
論文頁數:64
中文關鍵詞:切換式電源供應器降壓轉換器直流-交流轉換器脈波寬度調變
外文關鍵詞:Switching Power Ssupplybuck converterDC-AC converterPulse Width Modulation
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  市面上一般常見的電源轉換器其輸出電壓大多是固定的形態,所以負載端的電路較受限制。進而演變成出現許多不同規格的電源轉換器產品,這樣不但浪費地球資源也造成使用者的不便,若能成功實現出一種輸出電壓具有可調整能力的電源轉換器,將能有效的改善當下現況。
  本研究旨在切換式電源供應器(Switching Power Supply, SPS)之研究,利用既有IC TL494控制其脈波寬度調變(Pulse Width Modulation, PWM)信號的工作週期(Duty Cycle),搭配電路架構之設計,完成“輸出電壓可調整之降壓型轉換器”與“全橋式直流-交流轉換器”兩項研究。在輸出電壓可調整之降壓型轉換器電路的研究中,設計Duty Cycle從0%~93%的變化時,輸出電壓可調整在0V~45V,實現不同於現今市面上大多數固定電壓輸出的電源轉換器;另在直流-交流轉換器電路的研究中,利用全橋式的電路架構實現出一個直流12V轉交流100V的直流-交流轉換器。此兩項研究也經實驗證實其轉換結果具有效性及穩定性。
  文章最後提出了本研究未來可以改進的方向,包含優化電源調節率與負載調節率、回授電路設計、輸出波形改善與電路板面積縮小等。

  The commonly seen power converters on the market are usually based on fixed input voltages such that the circuits at the load side can be rather limited leading to power converter products of various specifications. This has resulted in not only the waste of resources on earth, but also inconvenience to users. This situation can be improved if a power converter with adjustable input voltage can be successfully developed.
  This thesis focuses on the research of switching power supply (SPS), using the IC-TL494 to control the duty cycle of pulse width modulation (PWM) signal. The circuit architecture was designed to complete two studies “buck converter with adjustable output voltage” and “full-bridge DC-AC converter”. In the research of buck converter with adjustable output voltage, when duty cycle is varying in the range of 0%~93%, the output DC voltage will be varying in the range of 0V~45V, which is different from most converters currently on the market with fixed voltage output. In addition, in the research of full-bridge DC-AC converter, using full-bridge circuit architecture to achieve a DC-AC converter working in DC 12V and produced AC 100V. The experimental results also confirmed that the two studies results with validity and reliability.
  In conclusion, the article proposes the directions for the future of research, including the line regulation and load regulation, feedback circuit design, improve the output waveform and reduce the area of the circuit board and so on.

中文摘要 I
英文摘要 III
誌謝 V
目錄 VI
圖目錄 IX
表目錄 XII
第一章 緒論 1
   1.1 研究背景 1
   1.2 研究動機與目的 1
   1.3 文獻回顧 2
   1.4 章節組織 6
第二章 降壓型轉換器介紹 7
   2.1 前言 7
   2.2 基本架構及動作原理..7
   2.3 連續導通與不連續導通模式 11
   2.4 設計考量 13
第三章 DC-DC電路系統 15
   3.1 電路系統架構 15
   3.2 電路設計 15
     3.2.1 Duty Cycle可變之設計 17
     3.2.2 驅動電路設計 20
     3.2.3 LC濾波電路設計 22
   3.3 實驗結果與討論 25
     3.3.1 輸入電壓改變時輸出電壓測試與觀察 26
     3.3.2 Duty Cycle改變時輸出電壓空載、滿載之觀察 32
     3.3.3 討論 46
第四章 DC-AC電路系統 47
   4.1 電路系統架構 47
   4.2 電路設計 49
     4.2.1 Duty Cycle 50%設計 49
     4.2.2 全橋式切換電路設計 50
     4.2.3 LC濾波電路設計 53
   4.3 實驗結果與討論 54
     4.3.1 輸出電壓穩定性觀察 56
     4.3.2 討論 57
第五章 結論與未來展望 58
   5.1 結論 58
   5.2 未來展望 59
參考文獻 61

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