研究生: |
劉建宏 JIAN-HUNG LIOU |
---|---|
論文名稱: |
高效率低空載損耗之200W穩壓器研製 Design and Implementation of a 200W Adapter with Low Standby Power |
指導教授: |
羅有綱
Yu-Kang Lo |
口試委員: |
歐勝源
Sheng-Yuan Ou 劉益華 Yi-Hua Liu |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2007 |
畢業學年度: | 95 |
語文別: | 中文 |
論文頁數: | 105 |
中文關鍵詞: | 穩壓器 、空載功率消耗 、主動式功率因數修正器 、半橋式串聯諧振轉換器 、零電壓切換技術 、同步整流技術 |
外文關鍵詞: | no-load loss |
相關次數: | 點閱:420 下載:8 |
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基於節能的觀點,本論文製作一交流轉直流的穩壓器,目的在於提高電源轉換器的能源使用率,並減少不必要的空載功率消耗。轉換器前級為主動式功率因數修正器,用以提昇電路操作時的功率因數,轉換器後級為半橋式串聯諧振轉換器,運用零電壓切換技術以及同步整流技術達到高轉換效率。本論文利用突衝模式控制以及改良式啟動電路,減少輸出空載時不必要的功率消耗。最後完成實作一滿載效率達87 %,且空載損耗低於0.51 W以下的交流轉直流穩壓器。
Mankind has been consuming the earth resources for a long time. In order to prevent the lack of energy in the future, the protection towards resources and conservation of envivonment has become more and more important. Thus, this thesis is devoted to design an AC-to-DC regulator for optimizing the transfer efficiency of the converter and decreasing the power loss during no-load condition. The front-end part of the regulator is an active power factor correction circuit to raise the input power factor. The second stage is a half-bridge series resonant converter that utilizes zero–voltage switching and synchronous rectification to achieve high conversion efficiency. The low power consumption during no-load condition is obtained by using the burst-mode control and an improved starting circuit. A prototype regulator is implemented with a full-load efficiency of 87%, and no-load loss less than 0.51W.
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