研究生: |
鐘俊智 Jun-zhi Zhong |
---|---|
論文名稱: |
具同步整流疊接式半橋串聯諧振轉換器研製 Study and Implementation of a Cascoded Half-Bridge Series Resonant Converter with Synchronous Rectification |
指導教授: |
羅有綱
Yu-kang Lo 邱煌仁 Huang-jen Chiu |
口試委員: |
劉益華
Yi-hua Liu 林景源 Jing-yuan 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: | 104 |
中文關鍵詞: | 疊接式半橋串聯諧振轉換器 、零電壓切換 、同步整流 |
外文關鍵詞: | Cascoded half-bridge series resonant converter, zero-voltage-switching, synchronous rectifier |
相關次數: | 點閱:436 下載:9 |
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本文提出一具同步整流功能之疊接式半橋串聯諧振轉換器,並使用數學軟體Mathcad模擬不同品質因數Q、K因子、特性阻抗Zo與變壓器圈數比(NP/NS)對電壓增益頻率響應之影響。此電路具有低元件應力的優點,一次側功率元件的電壓應力為輸入電壓的一半,且變壓器可均分輸出電流以減少銅損及輸出同步整流開關之導通損以提高轉換效率。本文對具同步整流疊接式半橋串聯諧振轉換器做詳細的電路分析與設計考量,最後實作一台輸入電壓380 V、輸出電壓12 V、輸出電流54.4 A且具同步整流功能之疊接式半橋串聯諧振轉換器,其效率在20 %負載至滿載均高於93 % 且穩壓率小於1 %。
This thesis presents a cascoded half-bridge series resonant converter with synchronous rectification. The Mathcad software is used to simulate the influences of the quality factor (Q), K factor, characteristics impedance (Zo), and the transformer turns-ratio (NP/NS) on the frequency response of voltage gain. The proposed converter has the advantage of low device stress. It subjects the off transistor on primary side to only half of the input voltage. The transformers can share the output current to reduce the copper losses. The conduction losses on the output synchronous rectifier can also be reduced to improve the conversion efficiency. Circuit analysis and design consideration of the proposed cascoded half-bridge series resonant converter with synchronous rectification are discussed in details. The prototype converter with an input voltage 380V, output voltage 12 V and the rated output current 54.4 A was implemented and tested. The efficiency can be higher than 93 % at 20 % load to full load conditions and the voltage regulation is less than 1 %.
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