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研究生： 黃信諭
Hsin-Yu Huang
論文名稱： 具有同步整流之低輸入電流漣波雙開關RCD箝位型順向式轉換器
Low Input-Current Ripple Two-Switch RCD-ClampedForward Converter with Synchronous Rectification
指導教授： 呂錦山
Ching-Shan Leu
口試委員: 黃仲欽
Chung-Chin Huang
林瑞禮
Jui-Li Ling
學位類別： 碩士
Master
系所名稱： 電資學院 - 電機工程系
Department of Electrical Engineering
論文出版年： 2008
畢業學年度： 97
語文別： 英文
論文頁數： 61
中文關鍵詞： 電力轉換器 、順向式轉換器 、電磁干擾 、RCD箝制 、電流漣波減小
外文關鍵詞： Power converters, forward converter, EMI, RCD-clamped, current ripple reduction
相關次數： 點閱：328  下載：18 
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  •  上一筆

    • The circuit analysis and implementation of the Two-Switch RCD-clamped Forward Converter with Ripple Reduction (2S-RCDFRR) are presented in this thesis. In addition to having simple circuitry, low electromagnetic interference (EMI), and more than 50% duty cycle, the conversion efficiency of the proposed topology has significant improvements by using synchronous rectification technique and adding external capacitances on main switches.
    To demonstrate its feasibility, the operation principle and an experiment of the proposed converter with 36~75V input and 5V/30A output are described in this thesis. According to the experimental results, the highest efficiency 90.46% is achieved. Consequently, the proposed converter is suitable for high efficiency wide input-voltage range applications.

    Table of Contents Abstract Ⅰ Acknowledgements Ⅱ Table of Contents Ⅲ List of Figures Ⅴ List of Tables Ⅶ Chapter 1 Introduction 1 1.1 Background and Motivation 1 1.2 Objectives of the Thesis 5 1.3 Organization of the Thesis 6 Chapter 2 Two-Switch RCD-Clamped Forward Converter with Ripple Reduction (2S-RCDFRR) 7 2.1 Introduction 7 2.2 Operational Principle 7 2.3 Circuit Analysis 12 2.4 Circuit Design 16 2.5 Summary 34 Chapter 3 Simulation and Experiment of the 2S-RCDFRR 35 3.1 Introduction 35 3.2 Simulated Results (SIMetrix/SIMPLIS) 35 3.3 Experimental Results 38 3.4 Summary 44 Chapter 4 Efficiency Improvements of the 2S-RCDFRR 45 4.1 Introduction 45 4.2 Efficiency Improvement by Employing Synchronous Rectification 45 4.2.1 The gate driving methods of the synchronous rectification 46 4.2.2 Experimental Results 47 4.3 Efficiency Improvement by Adding External Capacitances 50 4.3.2 Experimental Results 51 4.4 Summary 54 Chapter 5 Conclusions and Future Researches 55 5.1 Conclusions 55 5.2 Future Researches 56 References 57 Vita 61

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