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研究生： 陳銘宏
Ming-Hung Chen
論文名稱： 低輸入電流漣波之非對稱半橋電能轉換器
Asymmetrical Half-Bridge Converters with Input Current Ripple Reduction
指導教授： 呂錦山
Ching-Shan Leu
口試委員: 楊宗銘
Chung-Ming Young
林瑞禮
Ray-Lee Lin
榮世良
Brady Jung
林志毅
Zhi-Yi Lin
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： 2013
畢業學年度： 101
語文別： 英文
論文頁數： 65
中文關鍵詞： 台灣科技轉換器 、非對稱半橋轉換器 、低輸入電流漣波 、零電壓切換
外文關鍵詞： input current ripple reduction, Taiwan Tech converter, zero voltage-switching, asymmetrical half-bridge converter
相關次數： 點閱：343  下載：11 
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    • 本論文提出一個具有低輸入電流漣波的非對稱半橋電能轉換器電路架構，藉由有效地利用變壓器的漏感與一個箝位電容，本論文所提出的轉換器，不僅擁有傳統非對稱半橋電能轉換器所具有的優點，如可零電壓切換及開關電壓箝制等，並且以最少的元件能有效降低輸入電流漣波，可使用較小的電磁干擾濾波器，而能達成電磁干擾的電氣規格，接著在將利用反馳與順向式的整流電路，去探討在寬廣的輸入電壓下的操作模式，並且挑選在輸入300-400-V進行實驗驗證。

    Asymmetrical half-bridge converter (AHBC) features ZVS operation under wide line and load ranges so that it is suitable for high frequency and high input-voltage power conversion applications. However, it has pulsating input current resulting in generating high di/dt noise, one of the noise sources of the electromagnetic interference (EMI) problem. Consequently, large filter components should be used to attenuate the noise level within the limit of the EMI regulation. As a result, power density performance is limited. To reduce the pulsating input current ripple, an asymmetrical half bridge converter with input current ripple reduction (AHB-RR) is proposed in this thesis.
    To integrate the features of the HBC-CRR and the AHBC, AHB-RR has significant reduced input current ripple due to its built-in current ripple cancellation mechanism. Therefore, a smaller EMI filter stage can be used and power density can be enhanced.
    In addition, to operate the AHB-RR with wide input voltage range, a flyback-forward rectifier is used instead of the center-tapped rectifier. Therefore, an asymmetrical half-bridge converter with flyback-forward rectifier and input current ripple reduction (AHBFF-RR) is also proposed.
    Finally, two proposed converters with 300-400-V input and 24-V/10-A output are implemented and tested to demonstrate their feasibility.

    Abstract I Acknowledgement II Table of Context III List of Figures V List of Figures VIII Chapter 1 Introduction 1 1.1 Background 1 1.2 Objectives of Thesis 3 1.3 Organization of the Thesis 3 Chapter 2 Asymmetrical Half Bridge Converter with Input Current Ripple Reduction (AHB-RR) 4 2.1 Introduction 4 2.2 Operation Principle 7 2.3 Circuit Analysis 12 2.4 Circuit design 18 2.5 Experimental Results 24 2.6 Summary 33 Chapter 3 Asymmetrical Half Bridge Converter with Flyback-Forward Rectifier and Input Current Ripple Reduction (AHBFF-RR) 34 3.1 Introduction 34 3.2 Operation Principle 35 3.3 Circuit Analysis 40 3.4 Experimental Results 42 3.5 Summary 49 Chapter 4 Conclusions and Future Researches 50 4.1 Conclusions 50 4.2 Future Researches 51 References 52

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