研究生: |
劉宇晨 Yu-Chen Liu |
---|---|
論文名稱: |
700W雙組輸出備援式直流/直流轉換器研製 Study and Implementation of 700-W Redundant DC-DC Converters with Dual Outputs |
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 歐勝源 Sheng-Yuan Ou |
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: | 2009 |
畢業學年度: | 97 |
語文別: | 中文 |
論文頁數: | 83 |
中文關鍵詞: | 全橋同步整流串聯諧振轉換器 、雙相同步降壓轉換器 、自動主僕式均流控制 、熱插拔 |
外文關鍵詞: | Full-Bridge Series Resonant Converter with Synch, Dual Phase Synchronous Buck Converter |
相關次數: | 點閱:522 下載:30 |
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本論文主要研製雙組輸出備援式直流/直流轉換器,所採用之架構由兩級電路所組成:前級電路為具同步整流之全橋串聯諧振轉換器,後級電路採用模組化之雙相同步降壓轉換器。由於串聯諧振的架構具有零電壓切換的特性,可有效地降低損失,進而提升整機效率。透過模組化的設計,可縮小系統體積,縮短開發的時間。備援式的電源供應系統,需考慮系統擴充性,本文將針對熱插拔技術與自動主僕均流技術做進一步之探討。
最後設計並實作出兩部700W備援式直流/直流轉換器,其輸出規格分別為12V/50A及5V/40A,在380V直流電壓輸入下全機效率可達93%。且12V均流誤差低於10%的滿載電流、5V的均流誤差低於15%的滿載電流。
This thesis focuses on the study and implementation of a 700-W redundant DC-DC converter with dual outputs. This converter structure consists of two stage circuits: a full-bridge series-resonant converter with synchronous rectifier and a dual phase synchronous Buck converter. The zero-voltage switching (ZVS) features of the adopted series-resonant converter can effectively reduce the switching losses and raise conversion efficiency. A hot-swap technique and an automatic master-slave current-sharing control scheme are also studied to implement the redundant power supply system.
In this thesis, two laboratory prototypes for 700W redundant power modules with dual outputs of 12V/50A and 5V/40A are realized and tested. The overall efficiency can be up to 93% at 380V DC input voltage. The current-sharing tolerances between two power modules are respectively less than 5A and 6A at 12V and 5V outputs.
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