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  • 學位論文

以相移全橋架構研製雙模組併聯之直流轉換器

Design and Implementation of a Paralleled Phase-Shift Full-Bridge Converter

指導教授 : 黃明熙

摘要


本篇論文採用全橋相移式零電壓切換轉換器(Full Bridge Phase Shifted Zero Voltage Switching Converter)為基本架構,並以UCC3895這顆晶片作為PWM控制器,利用此輸出訊號相移調控工作週期以應對負載變動,以及運用開關上的寄生電容和變壓器之漏電感產生共振,使開關切換時處於零電壓狀態以降低切換損失。 整個電路架構以兩組全橋相移式零電壓轉換器併聯供應同一負載,並使兩組轉換器達到均流輸出,降低輸出電流漣波大小,縮小濾波器元件尺寸,本文所研製電路規格如下:輸入直流電壓:DC 48V;輸出直流電壓:DC 3.3V;輸出功率:72W。 全橋相移式零電壓切換基本原理、PWM控制晶片、控制電路、電路架構及設計準則皆在論文中之各章節討論。

關鍵字

全橋相移轉換器 併聯 均流

並列摘要


The thesis adopts full-bridge phase-shifted zero-voltage isolated switching converter as the basic structure. First, the hardware of proposed converter is established using a phase-shift current controller UCC3895 manufactured by Texas Instruments (TI). In order to control output voltage of converter, the UCC3895 is in charge of current control, phase-shift and PWM generation. Then the zero voltage switching (ZVS) is yielded by parasitic capacitance of MOSFETs and a leakage inductance of transformer to reduce the switching losses of MOSFETs. Finally, a paralleled operation of two UCC3895-based phased-shifted converter is devised to improve the current sharing behavior in steady-state. And the clock inputs of the paralleled converter are provided by a pair of synchronous interleaved clocks to let the converter possess lower output voltage ripple

參考文獻


[15] 張鎮東,相移全橋直流轉換器之研製, 國立台北科技大學電機工程系碩士學位論文,民國96年六月。
[13] 林建億,以數位訊號處理器實現具有相移與零電壓切換之全橋轉換器,國立台北科技大學電機工程系碩士學位論文,民國96年一月。
[11] N. Mohan, T. M. Undeland, W. P. Robbins, “Power Electronic: Converter, Applications, and Design,” John Wiley & Sons, 1995.
[2] A. I. Pressman, Switching Power Supply Design, McGraw Hill Co., 1999.
[4] N. Mohan, T. M. Undeland and W. P. Robbins, Power Electronics, John Wiley & Sons Ins., 2003.

被引用紀錄


許宏遠(2008)。燃料電池複合機車用之具有交錯控制直流-直流轉換器研製〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1811200815230700
李奇龍(2014)。功率因數修正器與相移全橋轉換器之串並聯系統研製〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1808201413555300
黃敬元(2014)。具均流控制之數位化相移全橋轉換器並聯系統研製〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1208201414243500
陳韋諺(2014)。具有均流控制之數位交錯式功率因數修正器〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-2608201411165300

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