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研究生:黃敬原
研究生(外文):Jing-Yuan Huang
論文名稱:錯相式準諧振零電流切換順向轉換器之研製
論文名稱(外文):Design and Implementation of Interleaved Forward Quasi-Resonant Zero Current Switching Converters
指導教授:鄭銘揚鄭銘揚引用關係梁從主
指導教授(外文):Ming-Yang ChengTsorng-Juu Liang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系碩博士班
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:2008
畢業學年度:96
語文別:中文
論文頁數:88
中文關鍵詞:柔性切換零電流切換準諧振順向轉換器錯相技術
外文關鍵詞:ZCSinterleavedsoft switchingforward converterquasi-resonant
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本論文主要研究「錯相式準諧振零電流切換順向轉換器」,電路採用兩組準諧振順向式轉換器並聯以提高輸出功率,而開關之觸發訊號為錯相方式驅動,可減小輸出電流漣波。另外,使用準諧振特性達到開關的零電流切換,降低切換損失。本論文首先探討錯相式準諧振零電流切換順向轉換器電路架構之特性與優缺點,並分析電路工作原理及設計過程。最後實際製作「錯相式準諧振零電流切換順向轉換器」,電路之輸入直流電壓為200 V,輸出為24 V/10 A。由實驗結果可知,開關截止時可達到零電流切換,而兩組輸出電感電流均流效果佳,並降低總輸出電流漣波。此外負載電壓調整率均維持在±1 %以內,滿載效率為90.9 %。
In this thesis, interleaved forward quasi-resonant (QR) zero current switching (ZCS) converters are studied and implemented. Two forward QR converters are parallel connected to increase output power. The interleaved technique is used to control the gate driver signals of two forward QR converters to reduce output current ripple. Also, the QR technique with ZCS is employed to reduce switching losses. The characteristics of the proposed converter are discussed, and the operation principles and design process are studied. Finally, interleaved forward QR ZCS converters with 200 V DC input voltage, 24V/10A output are implemented to verifying the theoretical analysis. Experimental results show that the switches are turned off with ZCS. The output inductor currents are balanced, and the output current ripple is reduced. Besides, the voltage regulation is ±1 %, and the efficiency is 90.9 % under 10 A output condition.
目 錄
摘要.............................I
誌謝.............................III
目錄.............................IV
表目錄...........................VII
圖目錄...........................VIII

第一章 緒論
1.1 研究背景與動機.................... 1
1.2 研究內容....................... 3
1.3本文架構簡介..................... 4
第二章 準諧振轉換器與錯相式轉換器簡介
2.1 準諧振技術簡介.................... 5
2.2 準諧振降壓型轉換器..................12
2.3 電壓箝位準諧振順向式轉換器.............. 16
2.4 錯相技術....................... 19
2.5 錯相式轉換器..................... 20
第三章 錯相式準諧振零電流切換順向轉換器
3.1雙輸出電感架構與電路動作分析............. 25
3.1.1 雙輸出電感架構簡介............... 25
    3.1.2 電路動作分析.................. 28
3.2 電路特性之探討.................... 36
3.2.1 電壓轉移函數.................. 36
    3.2.2 電壓增益與切換頻率之關係............ 41
3.2.3 輸出電感電流漣波................ 43
3.3 單輸出電感架構之特性................. 44
第四章 設計考量與實驗結果
4.1 系統規格訂定與重要元件設計.............. 48
4.2 輸出負載與切換頻率的關係.............. 54
4.3 控制器UC3865簡介.................. 55
4.4 功率元件、磁性元件與輸出電容之設計考量....... 57
4.4.1 功率元件設計................... 57
4.4.2 變壓器T1及T2設計................ 59
4.4.3 電流偵測電路設計................. 60
4.4.4 輸出電感設計................... 61
4.4.5 輸出電容設計................... 63
4.5 波形量測與系統特性探討................ 67

第五章 結論與未來展望
5.1 結論......................... 83
5.2 未來研究方向..................... 84
參考文獻..........................85
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