本論文研製一組隔離型雙向直流-直流轉換器，主要應用於發電系統、電池模組測試系統等場合。文中電路的架構為由三臂半橋(六切換開關)、三個隔離變壓器、三臂半橋同步整流開關與輸出電感電容所組成的三相全橋式轉換器。三個變壓器是以Y-Δ接法的三相變壓器方式連結，高壓側為Y接法可以減少變壓器繞線面積，低壓側為Δ接法可以達到分流效果降低繞組銅損，同時電路亦具有高電壓轉換比例。相較於一般全橋式(四切換開關)轉換器，三相全橋式轉換器的變壓器平均分擔輸出功率，如此能夠減小鐵芯體積；此外，開關控制部分採用定頻的非對稱責任週期驅動，可以達到開關零電壓切換降低切換時的。
本論文實際完成一台輸出功率11 kW的實體電路，低壓側電壓為45 V，額定電流為240 A，並以數位訊號處理器TMS320F28035來實現數位控制，在20%到100%負載下的整體轉換效率可達90%以上。

This dissertation presents a isolated bi-directional DC-DC converter can be applied in power generation system and battery array testing system. The topology of this converter is a three-phase full-bridge type, that is mainly consists of three half-bridge switch legs (six switches), three isolated transformers, three half-bridge synchronous rectification switch legs and inductor. The three isolated transformers are configured in Y-Δ connection with series high-voltage side and parallel low-voltage side, it can reduce the turns of Y side and the winding current stress of Δ side by current sharing, besides, Y-Δ connection has high voltage transfer ratio. Comparing with the general single-transformer full-bridge type (four switches), it can share output power by three transformers, the size and cost of each transformer are thus reduced. Asymmetrical control scheme is used for driving the power switches, so that the zero-voltage-switching can be achieved.
In this dissertation, a laboratory prototype with 11-kW rated power has been built and tested. The voltage of low-voltage side is 45 V and current is 240 A. A digital-signal processor chip TMS320F28035 is used to realize the controller of this converter. The measured efficiencies are above 90% form 20% to 100% load conditions.

[1] BP, http://www.bp.com/home/do?categoryId=1,2006
[2] 黃鎮江編著，燃料電池，全華科技圖書股份有限公司，民國94年。
[3] 賴日生，替代能源所用高效率電力電子系統設計，工業技術人才培育計畫，民國98年。
[4] Lipman, T.E., "Manufacturing and lifecycle costs of battery electric vehicles, direct-hydrogen fuel cell vehicles, and direct-methanol fuel cell vehicles," Energy Conversion Engineering Conference and Exhibit, (IECEC) 35th Intersociety, vol.2, no., pp.1352, 1358 vol.2, 2000.
[5] 孫清華，「可充電電池技術大全」，全華科技圖書股份有限公司，民國92年。
[6] 吳財福，「綠色能源直流供電系統介紹」，98學期第一學年中正講座，中正大學，民國98年。
[7] 賴日生，電力電子在分散式再生能源上之應用，國立勤益技術學院短期課程，民國91 年。
[8] James A. Momoh, “Centralized and Distributed Generated Power Systems – A Comparison Approach”, Future Grid Initiative White Paper, Power Systems Engineering Research Center (PSERC), June, 2012.
[9] 衣寶廉、陳憲偉，科技大浪潮-燃料電池，五南圖書出版公司，民國92 年。
[10] Caisheng Wang; Nehrir, M.H., "Distributed Generation Applications of Fuel Cells," Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources, 2006. PS '06 , vol., no., pp.244,248, 14-17 March 2006.
[11] Mohammed, O.H.; Amirat, Y.; Benbouzid, M.; Tianhao Tang, "Hybrid generation systems planning expansion forecast: A critical state of the art review," Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE , vol., no., pp.1668,1673, 10-13 Nov. 2013.
[12] 陳彥豪，電力系統再進化-智慧型分散式電力系統，國家實驗研究院，科技發展政策報導，頁87-89， 2007.01。
[13] Tao Zhou; Francois, B., "Energy Management and Power Control of a Hybrid Active Wind Generator for Distributed Power Generation and Grid Integration," Industrial Electronics, IEEE Transactions on , vol.58, no.1, pp.95,104, Jan. 2011.
[14] Schafer, A.; Moser, A., "Dispatch optimization and economic evaluation of distributed generation in a virtual power plant," Energy tech, 2012 IEEE , vol., no., pp.1,6, 29-31 May 2012.
[15] Gujar, M.; Datta, A.; Mohanty, P., "Smart Mini Grid: An innovative distributed generation based energy system," Innovative Smart Grid Technologies - Asia (ISGT Asia), 2013 IEEE , vol., no., pp.1,5, 10-13 Nov. 2013.
[16] Prencipe, M., "Low power hybrid fuel cells and photovoltaic systems for stand-alone applications," Telecommunications Energy Conference, 2007 (INTELEC 2007). 29th International , vol., no., pp.434,438, Sept. 30 2007-Oct. 4 2007.
[17] Marambeas, P. G.; Papathanassiou, S.; Manias, S.N.; Mouroutsos, S.; Ioannidis, G., "A power electronics conversion topology for regenerative fuel cell systems," Power Electronics Specialists Conference, 2008. PESC 2008. IEEE , vol., no., pp.216,222, 15-19 June 2008.
[18] M. F. M. Elias, K. M. Nor, N. A. Rahim, and A. K. Arof, “Lithium-ion Battery Charger for High Energy Application,” National Power Engineering Conference, 2003, pp. 283-288.
[19] W. Lee, B. M. Han, and H. Cha, “Battery Ripple Current Reduction in a Three-phase Interleaved DC-DC Converter for 5kW Battery Charger,” 2011 IEEE Energy Conversion Congress and Exposition, pp. 3535-3540.
[20] D.M. Sable, “Optimization of spacecraft battery charger/discharger systems,” Ph.D. Dissertation, Virginia Polytechnic Institute and State University, 1991.
[21] Chih-Chiang Hua; Ching-Hsiang Hsu, "Implementation of a Regenerative Pulse and Equalization Battery Charger Using a DSP," Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference on , vol.2, no., pp.955,959, 28-01 Nov. 2005.
[22] Chu, Y. S.; Chen, R.Y.; Liang, T.J.; Changchien, S.K.; Chen, J. -F, "Positive/negative pulse battery charger with energy feedback and power factor correction," Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE , vol.2, no., pp.986,990 Vol. 2, 6-10 March 2005.
[23] Junhong Zhang, "Bidirectional DC-DC Power Converter Design Optimization, Modeling and Control", Dissertation submitted to the faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Doctor of Philosophy In Electrical Engineering, Jan. 30, 2008, Blacksburg, Virginia.
[24] Waffler, S.; Kolar, J.W., "A Novel Low-Loss Modulation Strategy for High-Power Bidirectional Buck+Boost Converters," Power Electronics, IEEE Transactions on , vol.24, no.6, pp.1589,1599, June 2009.
[25] Waffler, S.; Kolar, J.W., "Comparative evaluation of soft-switching concepts for bi-directional buck＋boost dc-dc converters," Power Electronics Conference (IPEC), 2010 International , vol., no., pp.1856,1865, 21-24 June 2010.
[26] Waffler, S.; Kolar, J.W., "Efficiency optimization of an automotive multi-phase bi-directional DC-DC converter," Power Electronics and Motion Control Conference, 2009. IPEMC '09. IEEE 6th International , vol., no., pp.566,572, 17-20 May 2009.
[27] Yamamoto, K.; Hiraki, E.; Tanaka, T.; Nakaoka, M.; Mishima, T., "Bidirectional DC-DC Converter with Full-bridge / Push-pull circuit for Automobile Electric Power Systems," Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE , vol., no., pp.1,5, 18-22 June 2006.
[28] Hiltunen, J.; Vaisanen, V.; Silventoinen, P., "A bidirectional current-fed resonant push-pull converter for low voltage, high current applications," Energy Conversion Congress and Exposition (ECCE), 2013 IEEE , vol., no., pp.4770,4774, 15-19 Sept. 2013
[29] Huang-Jen Chiu; Li-Wei Lin, "A bidirectional DC-DC converter for fuel cell electric vehicle driving system," Power Electronics, IEEE Transactions on , vol.21, no.4, pp.950,958, July 2006.
[30] 林立韋，用於燃料電池電源系統之雙向直流/直流轉換器，私立中原大學電機工程學系博士學位論文，民國96年。
[31] Hui Li; Fang Zheng Peng; Lawler, J.S., "A natural ZVS medium-power bidirectional DC-DC converter with minimum number of devices," Industry Applications, IEEE Transactions on , vol.39, no.2, pp.525,535, Mar/Apr 2003.
[32] Zhan Wang; Hui Li, "Optimized operating mode of current-fed dual half bridges dc-dc converters for energy storage applications," Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE , vol., no., pp.731,737, 20-24 Sept. 2009.
[33] Haifeng Fan; Hui Li, "A high-frequency medium-voltage DC-DC converter for future electric energy delivery and management systems," Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on , vol., no., pp.1031,1038, May 30 2011-June 3 2011.
[34] 董哲明，應用於不斷電系統之具零電壓切換雙向隔離型半橋直流/直流轉換器研製，國立台灣科技大學電子工程學系碩士學位論文，民國101年。
[35] Tsai-Fu Wu; Yung-Chu Chen; Jeng-Gung Yang; Chia-Ling Kuo, "Isolated Bidirectional Full-Bridge DC–DC Converter With a Flyback Snubber," Power Electronics, IEEE Transactions on , vol.25, no.7, pp.1915,1922, July 2010.
[36] Babokany, A.S.; Jabbari, M.; Shahgholian, G.; Mahdavian, Mehdi, "A review of bidirectional dual active bridge converter," Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2012 9th International Conference on , vol., no., pp.1,4, 16-18 May 2012.
[37] Kuiyuan Wu; de Silva, C.W.; Dunford, W.G., "Stability Analysis of Isolated Bidirectional Dual Active Full-Bridge DC–DC Converter With Triple Phase-Shift Control," Power Electronics, IEEE Transactions on , vol.27, no.4, pp.2007,2017, April 2012.
[38] Biao Zhao; Qiang Song; Wenhua Liu; Yandong Sun, "Dead-Time Effect of the High-Frequency Isolated Bidirectional Full-Bridge DC–DC Converter: Comprehensive Theoretical Analysis and Experimental Verification," Power Electronics, IEEE Transactions on , vol.29, no.4, pp.1667,1680, April 2014.
[39] Rathore, A.K.; Prasanna, U.R., "Analysis, Design, and Experimental Results of Novel Snubberless Bidirectional Naturally Clamped ZCS/ZVS Current-Fed Half-Bridge DC/DC Converter for Fuel Cell Vehicles," Industrial Electronics, IEEE Transactions on , vol.60, no.10, pp.4482,4491, Oct. 2013.
[40] Prasanna, U.R.; Rathore, A.K.; Mazumder, S.K., "Novel Zero-Current-Switching Current-Fed Half-Bridge Isolated DC/DC Converter for Fuel-Cell-Based Applications," Industry Applications, IEEE Transactions on , vol.49, no.4, pp.1658,1668, July-Aug. 2013.
[41] Baghzouz, Y.; Gong, X. D., "Analysis of three-phase transformer no-load characteristics," Power Systems, IEEE Transactions on , vol.10, no.1, pp.18,26, Feb 1995.
[42] Jin, E.S.; Liu, L. L.; Bo, Z.Q.; Klimek, A., "Application of equivalent instantaneous inductance algorithm to the Y-Δ three-phase transformer," Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE , vol., no., pp.1,6, 20-24 July 2008.
[43] Kang, Y.C.; Lee, M.S.; Lee, B.E.; Jang, S.I.; Kim, Y.G.; Choo, B.S., "Estimation of a circulating component of a three-phase Y-Δ transformer," Developments in Power System Protection, 2008. DPSP 2008. IET 9th International Conference on , vol., no., pp.315,320, 17-20 March 2008.
[44] Jih-Sheng Lai; Seung-Ryul Moon; Raeyoung Kim; Feng-Yuan Lin; Yu-Hsuan Liu; Ming-Hsien Lin, "A General-Purpose Three-Phase DC-DC Converter Building Block for Fuel Cell Applications," Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE , vol., no., pp.1639,1644, 5-8 Nov. 2007.
[45] Changrong Liu; Johnson, A.; Jih-Sheng Lai, "A novel three-phase high-power soft-switched DC/DC converter for low-voltage fuel cell applications," Industry Applications, IEEE Transactions on , vol.41, no.6, pp.1691,1697, Nov.-Dec. 2005.
[46] Zhan Wang; Hui Li, "A Soft Switching Three-phase Current-fed Bidirectional DC-DC Converter With High Efficiency Over a Wide Input Voltage Range," Power Electronics, IEEE Transactions on , vol.27, no.2, pp.669,684, Feb. 2012.
[47] De Souza Oliveira, D., Jr.; Barbi, I., "A three-phase ZVS PWM DC/DC converter with asymmetrical duty cycle for high power applications," Power Electronics, IEEE Transactions on , vol.20, no.2, pp.370,377, March 2005.
[48] Gui-Jia Su; Lixin Tang, "A Three-Phase Bidirectional DC-DC Converter for Automotive Applications," Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE , vol., no., pp.1,7, 5-9 Oct. 2008.
[49] Oliveira, D.S.; Barbi, I., "A three-phase ZVS PWM DC/DC converter with asymmetrical duty cycle associated with a three-phase version of the hybridge rectifier," Power Electronics, IEEE Transactions on , vol.20, no.2, pp.354,360, March 2005.
[50] 廖日能，並聯型三臂式直流-直流功率轉換器之研製，國立台灣科技大學電機工程系研究所碩士論文， 2009年。
[51] 徐懷清，數位控制三相隔離式直流-直流轉換器之研製，國立台灣科技大學電機工程系研究所碩士論文， 民國九十九年。
[52] Zhu, L., "A Novel Soft-Commutating Isolated Boost Full-Bridge ZVS-PWM DC–DC Converter for Bidirectional High Power Applications," Power Electronics, IEEE Transactions on , vol.21, no.2, pp.422,429, March 2006.
[53] Ming-Shi Huang; Po-Yi Yeh; Jia-Rong Huang; Chang-Hung Liao, "Novel bi-directional AC-DC converter for electrical vehicle battery testing," IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society , vol., no., pp.1480,1485, 7-10 Nov. 2011.
[54] 楊忠霖，數位信號處理器應用於多組直流輸出電力轉換器之研製，國立台灣科技大學電機工程系研究所碩士論文， 2008年。
[55] T. M. U. Ned Mohan, William P. Robbins, Power Electronics:Converters, Applications and Design. Third Edition, John Wiley & Sons,Inc., 2003.
[56] C. P. Basso, Switch-Mode Power Supplies : SPICE Simulations and Practical Designs. McGraw-Hill, Inc., 2008.
[57] EPARC. ，電力電子學綜論，全華出版社， 2008年。
[58] A. I. Pressman, Switching Power Supply Design. Second Edition, McGraw-Hill, Inc., 1998.
[59] MAGNETIC POWDER CORES, Innovative Technological Advancement, CSC.
[60] Infineon, " FS100R07N3E4", Technical Information, Data Sheet, 2013.
[61] IXYS, " IXFN360N15T2", Advance Technical Information, Data Sheet, 2009.
[62] Wenkang Huang; Schuellein, G.; Clavette, D., "A scalable multiphase buck converter with average current share bus," Applied Power Electronics Conference and Exposition, 2003. APEC '03. Eighteenth Annual IEEE , vol.1, no., pp.438,443 vol.1, 9-13 Feb. 2003.
[63] Zafrany, I.; Ben-Yaakov, S., "Average modeling, analysis and simulation of current shared DC-DC converters," Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE , vol.1, no., pp.640,646 vol.1, 17-22 May 1998.
[64] 張光瓊，李仁貴，吳大偉等譯，數位控制系統設計，全威圖書，2003年。(原著：Santina, Stubberud, Hostetter, 1992)
[65] 游謹憶，「數位信號處理TMS320F2803X使用手冊」。
[66] Texas Instruments Inc, “TMS320C28x User's guide,” Application Note, October. 2007.
[67] Texas Instruments Inc, “Designing a TMS320F280x Based Digitally Controlled DC-DC Switching Power Supply,” Application Note, 2005.
[68] PSIM Simulation Software - Powersim Inc.