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研究生:曾奕銘
研究生(外文):Yi-ming Tseng
論文名稱:儀器用380W隔離型交流/直流電源轉換器之研製
論文名稱(外文):Study and Implementation of a 380W Isolated AC/DC Power Supply for Instrumentation Applications
指導教授:邱煌仁楊宗銘楊宗銘引用關係
口試委員:邱煌仁楊宗銘
口試日期:2015-01-06
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:電機工程系
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:2015
畢業學年度:103
語文別:中文
論文頁數:95
中文關鍵詞:連續導通模式升壓型功率因數修正器半橋LLC型串聯諧振轉換器零電壓切換
外文關鍵詞:Continuous Conduction Mode Boost PFCHalf-Bridge LLC Series Resonant ConverterZero-voltage Switching
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本論文主要研製一台儀器用380W隔離型交流/直流電源轉換器,
前級採用電路連續導通模式升壓型功率因數修正器,用以提升電路
操作時的功率因數,降低其電流諧波成分。後級直流/直流轉換器電
路架構則為半橋LLC型串聯諧振轉換器,配合零電壓切換減少功率開
關切換損耗,達到電路效率的提升。並設計一返馳式轉換器電路,提
供控制IC與保護電路的輔助電源。
電路規格如下,交流電壓在75~288V的寬範圍輸入、輸出電壓/
電流為直流600V/0.63A、最大輸出功率則為380W。雛型電路驗證了
本論文所研究的電路架構與控制方法的可行性,並符合整體規格功能,
包括整機操作在滿載時,效率能達到90%以及功率因數均在0.98以上、
湧浪電流限制在10A以下、輸出電壓漣波控制在±3V內與電路保護功
均能正常動作。
This thesis developed a 380 watt Isolated AC/DC power supply for
instrumentation applications. A Continuous Conduction Mode (CCM)
Boost Power Factor Corrector is used as the pre-regulator for improving
the input power factor and reducing the total harmonic distortion of the
input current. A Half-Bridge LLC Series Resonant Converter (HB
LLC-SRC) is adopted as the DC-DC conversion stage. Switching losses
on switches can be significantly reduced. The efficiency of circuit can be
improved. A flyback converter is used as for control stage IC and
protection circuit.
The circuit specification are as follow: wide AC input voltage 75Vac
to 288Vac, 600V output voltage, 0.63A output current, 380W maximum
power output. Experimental results of a prototype circuit was tested to
verify the feasibility of the proposed scheme and control strategy. The
performance under full load is also according with the circuit
specification and the protective function works normally. The
experimental data are shown as below: efficiency above 90%, power
factor more than 0.98, inrush current under 10A, and output ripple among
±3V
摘要......................................................................................................... I
Abstract ..................................................................................................II
誌謝.......................................................................................................III
目錄........................................................................................................V
圖目錄................................................................................................ VIII
表目錄................................................................................................ XIII
第一章 緒論 ...........................................................................................1
1.1 研究背景 ...................................................................................1
1.2 研究動機與目的........................................................................2
1.3 研究內容 ...................................................................................2
1.4 內文編排方式............................................................................3
第二章 升壓型功率因數修正器原理簡介 ............................................4
2.1 功率因數的定義........................................................................4
2.2 功率因數修正電路控制方法 .................................................. 11
2.2.1 被動式功率因數修正器 ............................................... 11
2.2.2 主動式功率因數修正器 ............................................... 11
2.3 升壓型功率因數修正器動作原理與分析...............................15
第三章 半橋 LLC 型串聯諧振轉換器原理簡介 .................................19VI
3.1 理想 R-L-C 串聯諧振電路......................................................20
3.2 半橋串聯式諧振轉換器..........................................................22
3.2.1 SRC 電路動作分析.......................................................25
3.2.2 LLC 電路動作分析.......................................................33
3.3 SRC 與 LLC 之分析比較........................................................42
3.4 諧振槽參數分析......................................................................44
3.4.1 Q 值對轉移函數的影響 ...............................................46
3.4.2 K 值對轉移函數的影響 ...............................................47
3.4.3 n 值對轉移函數的影響 ................................................48
第四章 電路設計參數與考量..............................................................49
4.1 升壓型功率因數修正器電路設計 ..........................................49
4.1.1 電路規格.......................................................................49
4.1.2 控制 IC UC3854BDW 介紹..........................................50
4.1.3 功率級元件設計..........................................................52
4.2 半橋 LLC 型串聯諧振轉換器電路設計 .................................55
4.2.1 電路規格.......................................................................55
4.2.3 功率級元件設計..........................................................58
第五章 電路實測與實驗結果討論 ......................................................64
5.1 升壓式功因修正電路實測波形 ..............................................65VII
5.2 半橋 LLC 型串聯諧振轉換器實測波形 .................................75
5.3 整機啟動時序實測波形..........................................................79
5.4 保護波形實測..........................................................................83
5.5 實測數據 .................................................................................87
第六章 結論與未來展望......................................................................90
6.1 結論.........................................................................................90
6.2 未來展望 .................................................................................90
參考文獻...............................................................................................92
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