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研究生： 林祈宏
Lin, Ci-Hong
論文名稱： 新型一次側控制半橋諧振轉換器之設計與研製
Design and Implementation of Half-Bridge Resonant Converter with Novel Primary-Side Control
指導教授： 梁從主
Liang, Tsrong-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： 2018
畢業學年度： 106
語文別： 英文
論文頁數： 72
中文關鍵詞： 一次側控制 、半橋諧振轉換器 、電壓估測 、電流估測
外文關鍵詞： primary-side control, half-bridge resonant converter, output voltage estimation, output current estimation
相關次數： 點閱：68  下載：4 
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    • 傳統隔離型諧振式轉換器藉由光耦合器迴授二次側輸出訊號，但是光耦合器的特性易受環境影響且有較高的待機損失。本論文提出新型一次側控制隔離型半橋諧振轉換器之輸出電壓與電流估測技術可操作於LLC或SRC區間，藉由輔助繞組之電壓取樣以估測輸出電壓，並透過偵測諧振電流再取其積分至變壓器解耦時以估測輸出電流。本論文首先分析半橋諧振轉換器之動作模式及重要元件參數之設計準則，再利用本論文所提出之一次側控制技術，以估測輸出電壓與電流。最後，實作一輸出額定功率為100 W、輸出電壓為24 V以及應用於輸入電壓280 V ~ 342 V之實驗雛形，並由數位信號處理器作為控制器驗證本論文所提出之一次側估測技術。實驗結果顯示輸出電壓與輸出電流可分別控制於誤差1% 與8%以下，最高系統效率為95.2%。

    The opto-coupler is usually used for isolated resonant converter to feedback the secondary-side output information. However, the characteristics of the opto-coupler are easily affected by the operating conditions and will cause higher standby power loss. In this thesis, a novel primary-side controlled isolated half-bridge resonant converter with output voltage and current estimation for LLC and SRC operations is presented. The output voltage is estimated through the sampling of the auxiliary winding voltage, the output current is estimated by integrating the resonant current until the transformer decoupled. The operating principles of the half-bridge resonant converter and the design criteria of the key component parameters are addressed and analyzed. Also, the methods for estimating output voltage and output current are discussed in detail. Finally, an experimental prototype with rated power 100 W half-bridge resonant converter for input voltage 280-342 V and output voltage 24 V is built with micro-controller to validate the proposed primary side estimation technique. Experimental results show the output voltage and current can be controlled with the error less than 1% and 8%, respectively. The highest efficiency of the system is 95.2%.

    Chapter 1 Introduction 1 1.1 Background and Motivation 1 1.2 Thesis Organization 4 Chapter 2 Introduction of Isolated Resonant Converters and Primary-Side Control Methods 5 2.1 Switching Circuits and Rectifier Circuits 5 2.2 Resonant Converters 7 2.3 Control Schemes for Primary-Side Regulation 12 2.3.1 Flyback Converter with PSR Control 12 2.3.2 Resonant Converter with PSR Control 15 Chapter 3 Analysis of Proposed PSR Control for Half-Bridge Resonant Converter 18 3.1 Operating Principles of Half-Bridge Resonant Converter 19 3.1.1 Operating Principles in Region I - SRC 20 3.1.2 Operating Principles in Region II - LLC 25 3.1.3 Steady-State Analyses of Half-Bridge Resonant Converter 30 3.2 Analysis of Proposed PSR Control Scheme 32 3.2.1 Algorithm for PSR Half-Bridge Resonant Converter 32 3.2.2 Output Voltage Control of Proposed PSR Scheme 35 3.2.3 Output Current Control of Proposed PSR Scheme 38 Chapter 4 Hardware Implementation and Experimental Results 43 4.1 System Specifications and Key Components Design 43 4.2 Simulation Results 49 4.3 Experimental Results 55 Chapter 5 Conclusions and Future Works 69 5.1 Conclusions 69 5.2 Future Works 70 Reference 71

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