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研究生：	陳相宇 Cheng, Xiang-Yu
論文名稱：	具新型雙重諧振槽之同步整流零電壓切換直流電能轉換器 A Novel Dual Resonant Tank for ZVT DC-DC Converters with Synchronous Rectifier
指導教授：	楊宏澤 Yang, Hong-Tzer
共同指導教授:	李嘉猷 Lee, Jia-You
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：	2010
畢業學年度：	98
語文別：	英文
論文頁數：	64
中文關鍵詞：	零電壓切換、零電壓轉移、同步整流、反向恢復時間、零電流切換
外文關鍵詞：	Zero-voltage-switching, Zero-voltage-transition, Synchronous rectifier, Reverse recovery time, Zero-current-switching
相關次數：	點閱：143 下載：1
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直流對直流電能轉換器被廣泛運用於工業界，因應未來應用需求，電能轉換器必須具更高之效率與輸出功率。然而傳統直流對直流電能轉換器受限於切換損失與導通損失，導致效率無法獲得進一步提升。因此，本論文乃著重於減少傳統直流對直流電能轉換器之切換與導通損失。研究方法包括使用同步整流、零電壓切換、零電流切換技術，以及減少功率開關接面二極體之反向恢復時間。本文於既有電路架構中推導出一新型雙重諧振槽之同步整流零電壓切換直流電能轉換器，並透過實作一輸入電壓80伏，輸出電壓30伏、具200瓦功率輸出之雛型電路以驗證本文所提理論結果。根據模擬與實驗結果證實，本文所提出之新型雙重諧振槽不僅可應用於傳統直流對直流電能轉換器，且相對於既有架構具有更好之表現。

DC-DC converters, widely used in industry, are much more needed to supply higher power with higher efficiency in applications. However, the conventional DC-DC converters cannot achieve higher efficiency owing to the switching and conduction losses. Thus, this thesis aims at reducing the conduction and switching losses of conventional DC-DC converters by using Synchronous Rectification (SR), zero-voltage-switching (ZVS), zero-current-switching (ZCS) and reduced reverse recovery time of junction diodes. A novel dual resonant tank for DC-DC converters with SR is proposed on the basis of existing topologies. To verify the proposed circuit, a 200 W prototype converter, with input voltage 80V and output voltage 30V, is implemented in this thesis. The simulated and experimental results obtained have demonstrated that the proposed dual resonant tank can be practically implemented in conventional DC-DC converters to provide better performance as compared with existing topologies.

ABSTRACT	I
摘 要	III
誌 謝	IV
TABLE OF CONTENTS	V
LIST OF TABLES	VIII
LIST OF FIGURES	IX
CHAPTER 1. INTRODUCTION	1
1. Background and Motivations	1
2. Review of Literature	2
3. Research Method	3
4. Contribution of the Thesis	4
5. Organization of the Thesis	6
CHAPTER 2. EXISTING ZVT DC-DC CONVERTERS	8
1. Introduction	8
2. Types for ZVT in DC-DC Converters	9
2.1. Type A - Switched Auxiliary Voltage Sources	9
2.2. Type B - Constant Auxiliary Voltage Source	10
2.3. Type C - ZVT Resonant Tank	12
3. Comparisons of the Three ZVT Types	13
4. ZVT Converters with SR	15
4.1. Type B ZVT Buck Converters with SR	15
4.2. Type C ZVT Buck Converter with SR	16
5. Summary	16
CHAPTER 3. PROPOSED NOVEL DUAL RESONANT TANK	18
1. Introduction	18
2. Operating Principles of the Proposed Dual Resonant Tank	18
3. Design of the Proposed Resonant Tank	31
4. Summary	39
CHAPTER 4. SIMULATION AND EXPERIMENTAL RESULTS	41
1. Introduction	41
2. Description of Test Circuits	41
3. Circuit Implementation	42
4. Simulation Results	43
5. Experimental Results	48
6. Comparisons with the Existing Methods	52
7. Efficiency Measurements	53
8. Temperature Measurements	56
9. Summary	58
CHAPTER 5. CONCLUSIONS AND FUTURE PROSPECTS	60
1. Conclusions	60
2. Future Expectations	61
REFERENCES	62

                                    

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校內：2015-08-26公開
校外：2015-08-26公開

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