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研究生： 王瑋謙
Wei-Chian Wang
論文名稱： 低輸入電流漣波之非對稱全橋轉換器
Asymmetrical Full-Bridge Converter with Input Current Ripple Reduction
指導教授： 呂錦山
Ching-Shan Leu
口試委員: 林瑞禮
Ray-Lee Lin
楊宗銘
Chung-Ming Young
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： 91
中文關鍵詞： 低輸入電流漣波 、全橋轉換器 、直流偏流 、非對稱控制 、台灣科技轉換器 、零電壓切換
外文關鍵詞： input current ripple reduction, full-bridge converter, DC-bias, asymmetrical control, Taiwan Tech converter, zero-voltage-switching (ZVS)
相關次數： 點閱：989  下載：22 
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  •  上一筆

    • 相移全橋轉換器被廣泛使用於中高功率的應用，因為它的開關有較低的電壓和電流應力以及高的轉換效率。然而，相移全橋轉換器有一較大的輸入脈衝電流漣波，這使得相移全橋轉換器必須使用較大的電磁干擾濾波器來使電路能達到相關的規範。而這也限制了相移全橋轉換器的轉換功率密度。因此有人提出了降低輸入電流漣波的相移全橋轉換器來解決此問題，但使用相移控制會使電路有一環流的時區間，這個時區間會造成環流損而降低轉換效率。因此，解決此環流問題便成為了本篇論文的主要動機。
    為了解決環流問題，本論文提出了一個低輸入電流漣波之非對稱全橋轉換器，此非對稱控制並無相移控制的環流時區間，因此能消除該時區間造成的環流損，且非對稱控制還能保有零電壓切換的機制。然而，此轉換器繼承了非對稱控制造成變壓器有直流的問題，因此本篇論文也提出了無直流之低輸入電流漣波非對稱全橋轉換器來消除此直流問題。
    此外，也針對了本論文提出的兩個電路做電路分析，並且以300~400V輸入48V/750W輸出之硬體規格來驗證所提出的電路可行性。

    The phase-shift full-bridge converter (PSFB) is widely used in medium-to-high power applications due to its several advantages, such as low voltage and current stress on switches and high conversion efficiency. However, the PSFB still has a large pulsating input current ripple which is a common characteristic of the buck-derived converters. Consequently, a large input filter has to be used to meet the EMI regulation. It limits the power density performance. To reduce the input current ripple, a phase-shift full-bridge converter with input current ripple reduction (PSFB-RR) has been proposed. However, the circulating time interval causes a large circulating loss. To explore a ZVS full-bridge converter with input current ripple reduction without circulating loss becomes the motivation of this thesis and an asymmetrical full-bridge with input current ripple reduction (AFB-RR) converter is thus proposed. However, the AFB-RR has the conventional asymmetrical control has a DC-bias current on power transformer.
    To eliminate the DC-bias current, another asymmetrical control is employed and the non DC-bias asymmetrical full-bridge converter (NAFB-RR) is also proposed in this thesis.
    Besides, the operation principle and circuit analysis, several prototypes with 300-400 V input voltage and 48 V/750 W output are implemented and tested to demonstrate their feasibility.

    Abstract I Acknowledgements II Table of Contents III List of Figures V List of Tables IX Chapter 1. Introduction 1 1.1. Background and Motivation 1 1.2. Objectives of the Thesis 4 1.3. Organization of the Thesis 5 Chapter 2. Asymmetrical Full-Bridge with Input Current Ripple Reduction 6 2.1. Introduction 6 2.2. Operational Principle 9 2.3. Circuit Analysis 15 2.3.1. Voltage gain 15 2.3.2. Duty cycle loss 16 2.3.3. Switches voltage stress 17 2.3.4. Transformer DC-bias current 17 2.3.5. Input current ripple 19 2.3.6. Zero voltage switching condition 21 2.4. Circuit Design 23 2.4.1. Duty cycle range and turns-ratio n=Ns/Np 23 2.4.2. Transformer design 23 2.4.3. Leakage inductors Leq 27 2.4.4. Clamping capacitor Cc1, Cc2 27 2.4.5. Output inductor Lo 29 2.4.6. Output capacitor Co 32 2.4.7. Semiconductor components 33 2.5. Experimental Results 34 2.6. Summary 44 Chapter 3. Non DC-bias Asymmetrical Full-Bridge with Input Current Ripple Reduction 46 3.1. Introduction 46 3.2. Operational Principle 47 3.3. Circuit Analysis 56 3.3.1. Voltage gain 56 3.3.2. Duty cycle loss 57 3.3.3. Switches voltage stress 57 3.3.4. Input current ripple 58 3.3.5. Zero voltage switching condition 59 3.4. Circuit Design 61 3.5. Experimental Results 62 3.6. Summary 72 Chapter 4. Conclusions and Future Research 74 4.1. Conclusions 74 4.2. Future Researches 75 Reference 76

    [1] H. J. Chiu, T. F. Pan, C. J. Yao, and Y. K. Lo, “Automatic EMI Measurement and Filter Design System for Telecom Power Supplies,” IEEE Trans. Instrumentation and Measurement, vol. 56, no. 6, pp. 2254-2261, Dec 2007.
    [2] F. C. Lee, P. Barbosa, P. Xu, J. Zhang, B. Yang, and F. Canales, “Topologies and Design Considerations for Distributed Power System Applications,” in Proc. IEEE, vol. 89, no. 6, pp. 939-950, June 2001.
    [3] W. Chen, F. C. Lee, M. M. Jovanovic and J. A. Sabate, “A Comparative Study of a Class of Full Bridge Zero-Voltage-Switched PWM Converters,” in Proc. 10th Annu. IEEE Appl. Power Electron. Conf. and Expo. (APEC), vol. 2, Dallas, TX., Mar. 5-9, 1995, pp. 893-899.
    [4] G. C. Hsieh, J. C. Li, M. H. Liaw, J. P. Wang, and T. F. Hung, “A Study on Full-Bridge Zero-Voltage-Switched PWM Converter: Design and Experimentation,” in Proc. Int. Conf. on Ind. Electron., Control, and Instrumentation (IECON), vol. 2, Maui, HI., Nov. 15-19, 1993, pp. 1281-1285.
    [5] Y. Jang and M. M. Jovanovic, “A New PWM ZVS Full-Bridge Converter,” IEEE Trans. Power Electron., vol. 22, no. 3, pp. 987-994, May 2007.
    [6] C. W. Lee and C. S. Leu, “A Novel Soft-Switching Full-Bridge Converter,” in Int. Conf. on Power Electron. and Drive Syst. (PEDS), Taipei, Nov. 2009, pp. 993-996.
    [7] R. Redl, N. O. Sokal, and L. Balogh, “A Novel Soft-Switching Full-Bridge DC/DC Converter: Analysis, Design Considerations, and Experimental Results at 1.5 kW, 100kHz,” IEEE Trans. Power Electron., vol. 6, no. 3, pp. 408-418, July 1991.
    [8] W. Chen, X. Ruan, and R. Zhang, “A Novel Zero-Voltage-Switching PWM Full Bridge Converter,” IEEE Trans. Power Electron., vol. 23, no. 2, pp. 793-801, Mar. 2008.
    [9] M. Borage, S. Tiwari, and S. Kotaiah, “A Passive Auxiliary Circuit Achieves Zero-Voltage-Switching in Full-Bridge Converter over Entire Conversion Range,” IEEE Trans. Power Electron., vol. 3, no. 4, pp. 141-143, Dec. 2005.
    [10] A. F. Bakan, N. Altintas¸, and ˙I. Aksoy, “An Improved PSFB PWM DC–DC Converter for High-Power and Frequency Applications,” IEEE Trans. Power Electron., vol. 28, no. 1, pp. 64-74, Jan. 2013.
    [11] P. K. Jain, W. Kang, H. Soin, and Y. Xi, “Analysis and Design Considerations of a Load and Line Independent Zero Voltage Switching Full Bridge DC/DC Converter Topology,” IEEE Trans. Power Electron., vol. 17, no. 5, pp. 649-657, Sep. 2002.
    [12] X. Wu, X. Xie, C. Zhao, Z. Qian, and R. Zhao, “Low Voltage and Current Stress ZVZCS Full Bridge DC–DC Converter Using Center Tapped Rectifier Reset,” IEEE Trans. Ind. Electron., vol. 55, no. 3, pp. 1470-1477, Mar. 2008.
    [13] T. Mishima and M. Nakaoka, “Practical Evaluations of a ZVS-PWM DC–DC Converter with Secondary-Side Phase-Shifting Active Rectifier,” IEEE Trans. Power Electron., vol. 26, no. 12, pp. 3896-3907, Dec. 2011.
    [14] I. O. Lee and G. W. Moon, “Soft-Switching DC/DC Converter with a Full ZVS Range and Reduced Output Filter for High-Voltage Applications,” IEEE Trans. Power Electron., vol. 28, no. 1, pp. 112-122, Jan. 2013.

    [15] B. Y. Chen and Y. S. Lai, “Switching Control Technique of Phase-Shift-Controlled Full-Bridge Converter to Improve Efficiency Under Light-Load and Standby Conditions without Additional Auxiliary Components,” IEEE Trans. Power Electron., vol. 25, no. 4, pp. 1001-1012, Apr. 2010.
    [16] W. Chen, X. Ruan, Q. Chen, and J. Ge, “Zero-Voltage-Switching PWM Full-Bridge Converter Employing Auxiliary Transformer to Reset the Clamping Diode Current,” IEEE Trans. Power Electron., vol. 25, no. 5, pp. 1149-1162, May 2010.
    [17] N. H. Kutkut, D. M. Divan, and R. W. Gascoigne, “An Improved Full-Bridge Zero-Voltage Switching PWM Converter Using a Two-Inductor Rectifier,” IEEE Trans. Ind. Electron., vol. 31, no. 1, pp. 119-126, Jan./Feb. 1995.
    [18] T. F. Wu, C. T. Tsai, Y. D. Chang, and Y. M. Chen, “Analysis and Implementation of an Improved Current-Doubler Rectifier with Coupled Inductors,” IEEE Trans. Power Electron., vol. 23, no. 6, pp. 2681-2693, Nov. 2008.
    [19] J. Sun, K. F. Webb, and V. Mehrotra, “Integrated Magnetics for Current-Doubler Rectifiers,” IEEE Trans. Power Electron., vol. 19, no. 3, pp. 582-590, May 2004.
    [20] C. S. Leu and J. B. Hwang, “A Built-In Input Filter Forward Converter,” in 25th Annu. IEEE Power Electron. Specialists Conf. (PESC), vol. 20, Taipei, June 20-25, 1994, pp. 917-922.
    [21] Z. Yao, L. Xiao, and Y. Yan, “A Family of Zero-Voltage-Switching DC-DC Transformers,” in 21th Annu. IEEE Appl. Power Electron. Conf. and Expo. (APEC), Dallas, TX., Mar. 19-23, 2006, pp. 513-516.

    [22] C. S. Leu, J. B. Hwang and F. C. Lee, “A Novel Forward Configuration for DC-DC Application: Built-In Input Filter Forward Converter (BIFFC),” in Proc. 10th Annu. Appl. Power Electron. Conf. and Expo. (APEC), vol. 1, Dallas, TX., Mar. 5-9, 1995, pp. 43-49.
    [23] C. S. Leu, “A Novel Forward Configuration for Off-Line Applications: Two-Switch Built-In Input Filter Forward Converter (2SBIFFC),” in Proc. IEEE 22th Ind. Electron., Control, and Instrumentation (IECON), vol. 2, Taipei, Aug. 5-10, 1996, pp. 1035-1040.
    [24] C. S. Leu, “A Novel Full-Bridge Configuration for High-Power Applications: Built-In Input Filter Full-Bridge Converter (BIFFBC),” in 28th Annu. IEEE Power Electron. Specialists Conf. '97 Rec. (PESC), vol.1, St. Louis, MO., June 22-27, 1997, pp. 763-768.
    [25] C. S. Leu and T. N. Quang, “A Novel Half-Bridge Converter with Current Ripple Reduction,” in IEEE Energy Conversion Congr. and Expo. (ECCE), Phoenix, AZ., Sep. 17-22, 2011, pp. 3954-3959.
    [26] C. S. Leu and F. C. Lee, “An Input Current Ripple Reduction Converter (ICRRC) with Full-Bridge Configuration for Off-Line High-Power Applications,” in 19th Annu. IEEE Appl. Power Electron. Conf. and Expo. (APEC), vol. 1, 2004, pp. 629-633.
    [27] J. Cruz, M. Castilla, J. Miret, J. Matas, J. M. Guerrero, “Averaged Large-Signal Model of Single Magnetic Push-Pull Forward Converter with Built-In Input Filter,” in IEEE Int. Symp. on Ind. Electron., vol.2, May 4-7, 2004, pp. 1023-1028.
    [28] C. S. Leu, “Improved Forward Topologies for DC-DC Applications with Built-In Input Filter,” Ph.D. dissertation, Virginia Polytechnic Inst. and State Univ., Dept. Elect. and Comput. Eng., Virginia, 2006.
    [29] M. Ye, P. Xu, B. Yang, and F. C. Lee, “Investigation of Topology Candidates for 48 V VRM,” in 17th Annu. IEEE Appl. Power Electron. Conf. and Expo. (APEC), Dallas, TX., vol. 2, 2002, pp. 699-705.
    [30] E. F. Fong, “Low Input Current Ripple Phase-Shift Full-Bridge Converter,” M.S. thesis, Dept. Elec. Eng., Nat. Taiwan Univ. of Sci. and Tech., Taipei, Taiwan, Jan. 18, 2012.
    [31] Y. S. Shin, S. S. Hong, D. J. Kim, D. S. Oh, and S. K. Han, “A New Mode Changeable Full Bridge DC/DC Converter for Wide Input Voltage Range,” in Proc. 8th Int. Conf. on Power Electron. and Energy Conversion Congr. and Expo. Asia (ICPE & ECCE), Jeju, May 30-June 3, 2011, pp. 2328-2335.
    [32] P. Kim and S. Choi, “An Inductorless Asymmetrical ZVS Full Bridge Converter for Step-Up Applications with Wide Input Voltage Range,” in IEEE Energy Conversion Congr. and Expo. (ECCE), Atlanta, GA., Sep. 12-16, 2010, pp. 1945-1951.
    [33] H. L. Do, “Asymmetrical Full-bridge Converter with High-Voltage Gain,” IEEE Trans. Power Electron., vol. 27, no. 2, pp. 860-868, Feb. 2012.
    [34] A. J. Zhang, G. Huang, and Y. Gu, “Asymmetrical Full Bridge DC-to-DC Converter,” U.S. Patent 6 466 458 B2, Oct. 15, 2002.
    [35] TDK’s European Website for Electronic Components & Systems [Online]. Available: http://www.tdk.co.jp/tefe02/e141.pdf
    [36] CSC's advanced technology enables to fulfill diverse needs of clients regarding soft magnetic powder cores [Online]. Available: http://www.mhw-intl.com/assets/CSC/CSC%20Catalog%202011.pdf
    [37] SIMetrix Technologies Ltd. (2012). User’s Manual. [Online]. Available: http://www.simetrix.co.uk/Files/manuals/6.2/UsersManual.pdf
    [38] M. Xu, Y. Ren, J. Zhou, and F. C. Lee, “1-MHz Self-Driven ZVS Full-Bridge Converter for 48-V Power Pod and DC/DC Brick,” IEEE Trans. Power Electron., vol. 20, no. 5, pp. 997-1006, Sep. 2005.
    [39] F. Greenfeld, “Asymmetrical Zero-Voltage-Switching Full Bridge Power Converters,” U.S. Patent 8 035 996 B1, Oct. 11, 2011.

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