臺灣博碩士論文加值系統

此篇論文主要討論LLC諧振電源轉換器，電路架構包含前級功率因數校正電路以及後級半橋式LLC諧振直流/直流轉換電路。前級功率因數校正電路將升壓電感操作在不連續導通模式來達到功因校正之功能。後級之LLC諧振電路則具有一次側開關零電壓切換、二次側整流二極體零電流切換的高轉換效率特性。實驗結果電源轉換器擁有最高效率93.2%，及滿載時功率因數達到0.96以上。

This thesis presents a LLC resonant adapter consisting of a front-stage power factor correction circuit and a second-stage half bridge DC-DC converter. The PFC circuit works in discontinuous conduction mode to correct power factor. The second-stage LLC resonant circuit has high conversion efficient characters of zero voltage switching on primary power switches and zero current switching on secondary rectifiers. The experiment result shows that the adapter has the highest efficiency at 93.2% and PF is above 0.96 as full load.

第一章 緒論..............................................1

1.1 研究動機..............................................1
1.2 論文架構..............................................3

第二章 功率因數修正簡介..................................4
2.1 功率因數修正.......................................4
2.2 功率因數修正控制方法..............................10

第三章 LLC諧振轉換器簡介................................17
3.1 串聯諧振轉換器.......................................17
3.2 並聯諧振轉換器.......................................18
3.3 串並聯諧振轉換器.....................................19
3.4 LLC諧振轉換器.......................................20
3.5 LLC諧振轉換器動作原理...............................21

第四章 電源轉換器實際量測結果...........................33
4.1 電路規格以及實作電路架構.............................33
4.2 實驗波形.............................................37

第五章 結論.............................................47

參考資料.................................................48

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