陳秋麟臺灣大學:電子工程學研究所林冠佑Lin, Kuan-YuKuan-YuLin2010-07-142018-07-102010-07-142018-07-102009U0001-1501200910175300http://ntur.lib.ntu.edu.tw//handle/246246/189182在隔離型電源轉換器中，返馳式轉換器由於具有電路架構簡單、低成本和較少的元件數目之特性，因此廣泛地使用在低功率電子產品上。而一種可實現柔性切換技術的，即是零電壓切換準諧振返馳式轉換器，它和傳統的返馳式轉換器相比擁有許多優點，但仍保有返馳式轉換器的長處。在本論文中，將詳細探討操作在臨界導通模式之零電壓切換準諧振返馳式轉換器的運作。此外，還提出設計功率級電路和控制迴路的設計步驟。最後，將實作一額定功率為80瓦的零電壓切換準諧振返馳式轉換器來驗證理論的分析。Of all the isolated power converters, flyback converter is widely used for low power electrical appliances, since its property of the simple circuit topology, low cost, and fewer components. Zero-voltage-switching quasi-resonant flyback converter (ZVSQRC flyback), which is able to realized soft switching technique, has several advantages compared with conventional flyback converter, but it still possesses the merits of flyback converter. In this thesis, the operation of ZVSQRC flyback operated in critical conduction mode is investigated in detail. Besides, the designing procedure including power stage circuit and control loop is proposed. Finally, a ZVSQRC flyback with rated power of 80W is implemented to verify the theoretical analysis.第一章 緒論...............................................1.1 研究背景與動機........................................1.2 論文架構..............................................3二章 返馳式轉換器.......................................4.1 連續導通模式..........................................4.2 不連續導通模式........................................8.3 一次側緩衝器.........................................11三章 柔性切換與準諧振轉換器............................16.1 柔性切換簡介.........................................16.2 零電流切換準諧振轉換器...............................19.3 零電壓切換準諧振轉換器...............................21四章 零電壓切換之準諧振返馳式轉器分析與設計............24.1電路之架構與分析......................................24.2電路規格參數..........................................34.3電路之設計............................................35五章 實驗結果與討論....................................50.1量測波形與討論........................................50.2實驗數據與討論........................................54六章 結論與未來展望....................................58.1 結論.................................................58.2 未來研究方向.........................................59考文獻.................................................601797815 bytesapplication/pdfen-US返馳式準諧振柔性切換FlybackQuasi-ResonantSoft-Switchingthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/189182/1/ntu-98-R95943110-1.pdf