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研究生： 劉卓翰
Liu, Jwo-Hann
論文名稱： 雙輸出半橋諧振轉換器之分析及研製
Analysis and Implementation of Half-Bridge Resonant Converter with Dual Outputs
指導教授： 梁從主
Liang, Tsorng-Juu
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2020
畢業學年度： 108
語文別： 英文
論文頁數： 63
中文關鍵詞： 雙輸出 、直流-直流轉換器 、半橋諧振轉換器 、數位控制
外文關鍵詞： dual outputs, DC-DC converter, half-bridge resonant converter, digital control
相關次數： 點閱：64  下載：0 
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    • 近年來隨著手機、電視、電腦及液晶螢幕需求的增加，多輸出轉換器變得日益重要。本論文首先分析各種雙輸出隔離型直流-直流轉換器之優缺點，最後選擇半橋諧振轉換器作為本論文的主架構。藉由雙輸出個別獨立回授以調節上下臂開關的導通時間並使兩個輸出達到穩定且獨立的控制，其中輸出一回授控制訊號下臂開關的導通時間；輸出二回授訊號控制上臂開關的導通時間，之後再對此架構進行模式分析和參數設計。最後以數位訊號處理器為控制器，實現輸入直流電壓400 V、第一組輸出電壓/額定電流為12 V/3.5A、第二輸出電流範圍為3-300 mA、系統之額定功率為104 W之隔離型雙輸出直流-直流半橋諧振轉換器。實驗結果顯示在各種不同負載情況下，第一組輸出電壓可達到穩定之控制，最大誤差為0.92%且最高轉換效率為95.13%。

    Due to the increasing demand of the cellphone, TV and computer, liquid-crystal display monitor, multiple output converters become much more important in recent years. The benefits and drawbacks of different isolated DC-DC converters with dual outputs are compared. Finally, a half-bridge resonant converter is chosen. The dual outputs can be controlled by feedback dual outputs individually to modulate turn-on times of the high side switch and low side switch. The turn-on times of low side switch will be controlled by the feedback signal of first output and the high side switch will be controlled by the feedback signal of second output. The operating principle and parameters are then analyzed and designed, respectively. Finally, a half-bridge resonant converter with dual outputs with an input voltage of 400 V, the first output with an output voltage/current of 12 V/ 3.5 A, the second output with controlled current range from 3 to 300 mA, and the total rated power of 104 W is implemented and controlled by digital signal processor to verify the feasibility of the control method. The experimental results show that first output voltage can be well controlled under different load conditions with the highest output voltage error of 0.92% and the highest efficiency reaches 95.13%.

    Chapter 1 Introduction......1 1.1 Background and Motivation......1 1.2 Thesis Organization......6 Chapter 2 Introduction of Isolated Resonant Converters with Single and Dual Outputs......7 2.1 Introduction of LLC Resonant Converters......7 2.2 Multiple Outputs Resonant Converter......11 Chapter 3 Analysis of the Half-Bridge Resonant Converter with Dual Outputs......13 3.1 Introduction of the Half-Bridge Resonant Converter with Dual Outputs......13 3.2 Operating Principle of Half-Bridge Resonant Converter with Dual Outputs......16 3.2.1 Operating Principles in Both SRC Region of the Half Bridge Resonant Converter with Dual Outputs......17 3.2.2 Operating Principles in Both LLC Region of the Half Bridge Resonant Converter with Dual Outputs......21 3.2.3 Operating Principles in One SRC One LLC Region of the Half Bridge Resonant Converter with Dual Outputs......25 3.3 Control and Analysis of the Half-Bridge Resonant Converter with Dual Outputs......32 Chapter 4 Hardware Implementation and Experimental Results......35 4.1 System Specifications and Key Components Design......35 4.2 Experimental Results and Discussions......38 Chapter 5 Conclusions and Future Works......59 5.1 Conclusions......59 5.2 Future Works......60 REFERENCES......61

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