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研究生：	廖偉銘 Liao, Wei-Ming
論文名稱：	具柔切與高升壓比之新型錯相式直流-直流轉換器 A Novel Interleaved DC-DC Converter with Soft-Switching and High Voltage Gain
指導教授：	楊宏澤 Yang, Hong-Tzer
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：	2012
畢業學年度：	100
語文別：	英文
論文頁數：	66
中文關鍵詞：	高升壓、錯相式升壓轉換器、耦合電感
外文關鍵詞：	high step up, interleaved Boost converter, coupled inductor
相關次數：	點閱：157 下載：2
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由於再生能源的電力輸出通常是低電壓，故需要一高升壓轉換器提升至高電壓以滿足負載需求或應用於併網型系統。因此已有許多種類的高升壓直流-直流轉換器被提出。為進一步改善轉換器所需之效能，本論文提出一具柔切與高升壓比之錯相式直流-直流轉換器。藉由耦合電感及倍壓電路，所提之轉換器不需要操作於過大的責任週期即可達成高升壓比，此外利用錯相式架構有效的降低輸入電流漣波和各元件上的電流應力。本文之轉換器所有功率開關皆可達到零電壓導通，故可以減少功率開關的切換損失，此外耦合電感之漏感能量可被回收至輸出電容，且功率二極體之逆向回復電流亦可被抑制，因此轉換器之效率可獲得改善。本論文實現一輸入電壓40V、輸出電壓400V且額定功率為1kW之實體電路，並以模擬及實作結果驗證所提轉換器之理論與可行性。

Due to relatively lower output voltage of renewable energy sources, the converters with high voltage gain are commonly needed to have a high-voltage DC bus to meet the demand requirements or to be used in grid-connected applications. Various high step-up DC-DC converters have thus been presented. To further improve the needed performance, this thesis presents a novel interleaved high step-up DC-DC converter. The proposed converter utilizes a coupled inductor and a voltage multiplier to achieve high voltage conversion ratio without extreme duty cycle used. By employing an interleaved operation scheme, the input current ripple and the current stress on the components of the circuit can be reduced. In the proposed circuit, all the active switches can be turned on under zero-voltage-switching (ZVS) condition to reduce the switching losses. Besides, the energy stored in the leakage inductance of the coupled inductor can be recycled, and the reverse-recovery problem of the output diodes can be alleviated. The efficiency of the proposed converter is thus improved. To verify the effectiveness of the proposed converter, a 1kW prototype circuit with the input voltage of 40V and the output voltage of 400V is implemented. Both simulation and experimental results are presented in the thesis.

摘 要	I
ABSTRACT	II
誌 謝	III
LIST OF TABLES	VII
LIST OF FIGURES	VIII
CHAPTER 1. INTRODUCTION	1
1. Backgrounds and Motivations	1
2. Review of Literature	2
3. Research Method	4
4. Contribution of the Thesis	5
5. Organization of the Thesis	6
CHAPTER 2. REVIEW OF HIGH STEP-UP DC-DC CONVERTERS	7
1. Introduction	7
2. Types of High Step-Up Converters with Coupled Inductor	8
2.1. Boost Converter with Voltage Multiplier	8
2.2. Interleaved High Step-Up Converter	9
2.3. High Step-Up ZVT Boost Converter	10
2.4. Interleaved High Step-Up Converter with ZVS	11
3. Existing Soft-Switching Auxiliary Circuits	12
3.1. Soft-Switching Boost Converter	12
3.2. ZVS and ZCS Interleaved Boost Converter	13
3.3. Interleaved Boost Converter with ZVT	13
4. Summary	14
CHAPTER 3. THE PROPOSED INTERLEAVED HIGH STEP-UP DC-DC CONVERTER	16
1. Introduction	16
2. The Proposed Interleaved High Step-Up Converter	16
2.1. Circuit Configuration	16
2.2. Operational Principles	18
3. Analysis and Design of the Proposed Converter	30
3.1. Voltage Gain Expression	30
3.2. Voltage Stress Analysis	32
3.3. ZVS Soft-Switching Performance	33
3.4. Considerations of Input Current Ripple	34
4. Control Circuit Design	34
4.1. DSP Interface Circuit（dsPIC30F6010）	38
4.2. Feedback Circuit Design	40
4.3. Switch Driver Circuit	42
5. Summary	42
CHAPTER 4. SIMULATION AND EXPERIMENTAL RESULTS	45
1. Introduction	45
2. Specifications of the Proposed Prototype Circuit	45
3. Simulation Results	47
4. Experimental Results	50
5. Summary	58
CHAPTER 5. CONCLUSIONS AND FUTURE PROSPECTS	60
1. Conclusions	60
2. Future Prospects	61
REFERENCES	63

                                    

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校內：2013-08-20公開
校外：2013-08-20公開

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