本文研製一具電流倍增整流器的交錯式全橋轉換器，文中探討將兩組全橋轉換器在輸出電容處並聯，兩組全橋轉換器間的相移脈波寬度調變信號具有特定相角差，使其輸出電容漣波電壓的頻率為一次側切換頻率的四倍，藉由漣波電流抵消技術降低輸出漣波電壓。主要輸出電流被分成四個較小的電流路徑，使得在輸出電感的設計更為簡單，且可選用較小體積的鐵心，因而可有效地縮小整個直流對直流轉換器的體積。至於一次側開關，可操作在合適的切換頻率，以獲得零電壓切換特性，所提出的交錯式全橋轉換器其功率損失顯著降低，達成高功率密度直流對直流轉換器的目的。文中針對所設計的電路提供詳細的理論推導及設計方法，並利用模擬結果來驗證電路的正確性。最後本文完成一輸出電壓及電流分別為12V及100A，總功率1.2仟瓦的交錯式全橋轉換器，以證明所提系統的有效性。

An interleaved full-bridge converter with current double rectifier, in which two full-bridge converters are paralleled at output capacitors, is designed in this thesis. The phase shift PWM signals of one full-bridge converter are shifted to another with a fixed angle; as a result, the frequency of the voltage ripple of the output capacitors can be four times of the primary switching frequency. The converter reduces the output voltage ripple due to the cancellation effect. Furthermore, the main output current path is divided by four small current loops. Therefore, the output inductor is easily designed and has smaller chokes so that the size of the DC/DC converter can be reduced significantly. The primary side switches can be operated at a lower switching frequency with zero voltage switching characteristics. The power losses of the proposed interleaved full-bridge converter can be reduced dramatically and thus high power and hign density DC/DC converter can be obtained. Theoretical investigation and detailed design procedures of the converter are provided. Some simulation results are shown to verify the proposed converter. Finally, a 1.2kW interleaved full-bridge converter with 12V and 100A output capability was built to demonstrate the effectiveness of the proposed converter.

[1] Y. P. B. Yeung, W. E. Cheng, S. L. Ho and D. Sutanto, "Generalised analysis of switched-capacitor step-down quasi-resonant converter," IEE Power Electronics Letters, vol. 38, no. 6, March 2002, pp. 263-264.
[2] J. K. Chung and G. H. Cho, "A new soft recovery PWM quasi-resonant converter with a folding snubber network," IEEE Transactions on Industrial Electronics, vol. 49, no. 2, April 2002, pp. 456-461.
[3] X. F. Shi and C. Y. Chan, "Passivity-based adaptive controller design for quasi-resonant converters," IEEE ACC-2000, pp. 1556-1560.
[4] F. L. Luo, Y. Hong and M. H. Rashid, "Two quadrant DC/DC ZVS quasi resonant Luo-converter," IEEE PIEMC-2000, 2000, pp. 1132-1137.
[5] Y. Jang and M. M. Jovanovic, "A new family of full-bridge ZVS converters," IEEE Transaction Power Electronics, vol. 19, no. 3, May 2004, pp. 701-708.
[6] M. Brunoro and J. L. F. Vieira, "A high-performance ZVS full-bridge DC-DC 0-50-V/0-10-A power supply with phase-shift control," IEEE Transactions on Power Electronics, vol. 14, no. 3, May 1999, pp. 495-505.
[7] G. Moschopoulos and P. Jain, "Single-stage ZVS PWM full-bridge converter," IEEE Transactions on Aerospace and Electronic Systems, vol. 39, no. 4, October 2003, pp. 1122-1133.
[8] J. G. Cho, J. A. Sabate, G. H. Hua and F. C. Lee, "Zero-voltage and zero-current-switching full bridge PWM converter for high-power applications," IEEE Transactions on Power Electronics, vol. 11, no. 4, July 1996, pp. 622-628.
[9] X. Wu, J. Zhang, X. Xie and Z. Qian, "Analysis and optimal desugn considerations for improved full bridge ZVS DC-DC converter with hign efficiency," IEEE Transactions on Power Electronics, vol. 21, no. 5, September 2006, pp. 1225-1234.
[10] H. J. Chiu and L.W. Lin, "A hign-efficiency soft-switched AC/DC converter with current-doubler synchronous rectification," IEEE Transactions on Industrial Electronics, vol. 52, no. 3, June 2005, pp. 709-718.
[11] Y. Zhu, L. Yan and B. Lehman, "A lossless active clamping circuit for current doubler topologies," IEEE Power Electronics Letters, vol. 2, no. 3 , September 2004, pp. 92-95.
[12] 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 Transactions on Industry Applications, vol. 31, no. 1, January 1995, pp. 119-126.
[13] X. Ruan and J. Wang, "Calculation of resonant capacitor of the improved current-doubler-rectifier ZVS PWM full-bridge converter," IEEE Transactions on Industrial Electronics, vol. 51, no. 2, April 2004, pp. 518-520.
[14] B. R. Lin, C. L. Huang and C. H. Tseng, "Analysis and design of half-bridge converter with two current doubler rectifiers," IEEE ICIEA-2006, pp. 1-6.
[15] B. R. Lin, S. C. Tsay, C. S. Yang and C. L. Huang, "ZVS DC-DC converter with parallel-connected current doubler rectifier," IEEE IPEMC-2006, pp. 1-5.
[16] Y. M. Chen, S. Y. Tseng, C. T. Tsai and T. F. Wu, "Interleaved buck converters with a single-capacitor turn-off snubber," IEEE Transactions on Aerospace and Electronic Systems, vol. 40, no. 3, July 2004, pp. 954-967.
[17] M. T. Zhang, M. M. Jovanovic and F. C. Y. Lee, "Analysis and evaluation of interleaving techniques in forward converters," IEEE Transactions on Power Electronics, vol. 13, no. 4, July 1998, pp. 690-698.
[18] Texas Instruments, UCC3895 BiCMOS Advanced Phase-Shift PWM Controller Datasheet, 2006.
[19] B. R. Lin, K. Hiang and D. Wang, "Analysis and implementation of full-bridge converter with current doubler rectifier," IEE Proceedings-Electric Power Applications, vol. 152, no. 5, September 2005, pp. 1193-1202.
[20] 張村叮, "具高功因特性三相輸入直流電源供應系統之實現," 中原大學碩士論文, 中華民國94年6月.
[21] X. Peng, W. Jia, Y. Kaiwei, M. Yu and F. C. Lee, "Investigation of candidate topologies for 12V VRM," IEEE APEC-2002, pp. 686-692.
[22] L. R. Lewis, B. H. Cho, B. A. Carpenter and F. C. Lee, "Modeling,analysis and design of distributed power systems," IEEE PESC-1989, pp. 152-159.
[23] S. Pan and P. K. Jain, "A precisely-regulated multiple output forward converter with automatic master-slave control," IEEE PESC-2005, pp. 969-975.
[24] A. I. Pressman, Switching Power Supply Design, 2/e, McGraw-Hill, 1999.
[25] Texas Instruments, UCC39002 advanced 8-pin load-share controller Datasheet, 2007.
[26] N. Mohan, T. M. Undeland and W. P. Robbins, Power Electronics Converters Application and Design, 3/e, John Wiley and Sons, 2003.
[27] R. W. Erickson and D. Maksimovic, Fundamentals of Power Electronics, 2/e, Kluwer Academic publishers, 2001.
[28] TranSim, SIMetrix/Simplis advance power system simulation -Simplis reference manual, 2005.