研究生: |
劉亞哲 Ya-Jhe Liu |
---|---|
論文名稱: |
新型主動箝位順向式轉換器之研製 Study and Implementation of a Novel Active Clamp Forward Converter |
指導教授: |
羅有綱
Yu-Kang Lo 邱煌仁 Huang-Jen Chiu |
口試委員: |
林景源
Jing-Yuan Lin 林忠義 Chung-Yi Lin |
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: | 2014 |
畢業學年度: | 102 |
語文別: | 中文 |
論文頁數: | 56 |
中文關鍵詞: | 主動箝位 、順向式轉換器 、切換損失。 |
外文關鍵詞: | Active clamp, forward converter, switching loss. |
相關次數: | 點閱:339 下載:25 |
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本論文旨在研製一新型主動箝位順向式轉換器,此架構可以解決二次側飛輪二極體電壓突波問題,減少二次側元件電壓應力及切換損失;且可降低一次側開關元件截止時開關電流,降低截止時切換損耗。此外,一次側使用主動箝位能夠使開關元件實現零電壓導通,進而切換損耗、提高轉換效率。本論文詳細分析電路架構之工作原理,並依據設計準則實作一台480 W實驗電路,其最高效率可達到94.88%。
This thesis presents the study and implementation of a novel active clamp forward converter to solve the voltage spike problem on the freewheel diode at secondary side. The voltage stress and the switching loss of the secondary component can thus be reduced. At the same time, the primary-side switch can be turned off at decreased drain current to lower the switching loss. Moreover, by adopting the active clamp circuit, the primary-side switch can achieve zero-voltage turn-on to reduce the switching loss and raise the conversion efficiency. The operating principles are analyzed in detail. Finally, a 480-W prototype of the proposed active clamp forward converter has been built according to the design procedures. The peak efficiency can be up to 94.88%.
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