本論文主要研製一台規格為輸入電壓380 V、輸出電壓12 V、輸出電流58 A、具同步整流之全橋式LCC諧振轉換器電路，其主要切換功率開關具有零電壓切換的特性，可以減少切換損失；由於輸出為低電壓大電流，故二次側採用同步整流開關來取代傳統的蕭特基二極體，以減少導通損失，提升電路整體效率。本文首先探討諧振式電源轉換器的基本原理，後分析本論文電路各階段的電路動作原理、並利用數學軟體Mathcad運算及推導出諧振槽轉移函數，以繪製不同品質因數Q、諧振電容Cr1、Cr2之比值K，在諧振槽增益曲線上的變化趨勢，以利設計轉換器諧振槽時，能掌握參數變化對於諧振槽的影響。最後實作出一台輸出規格為輸入電壓380 V、輸出電壓12 V、輸出功率700 W之全橋式LCC諧振轉換器，並將量測結果與理論相互印證。

This thesis developed a specification for the input voltage 380 V, output voltage 12 V, output current 58 A, with synchronous rectification of the full-bridge LCC resonant converter. The primary-side switches possess the turn-on with zero-voltage switching (ZVS) in order to reduce the switching losses. Because of the low output voltage and high output current, the synchronous rectifiers are used instead of the schottky diodes on the secondary side to reduce the conduction losses and improve the overall efficiency. Firstly, the analysis of basic circuit theories for resonant converter is discussed. The operation principles and equivalent circuit of different working intervals are also discussed and derived, respectively. Then, according to the derived transfer function of the resonant tank, a mathematical software Mathcad is used to plot the different parameter curves for quality factor (Q), capacitor ratio (K), on the frequency response of the voltage gain of resonant tank. Finally, a input voltage 380 V, output voltage 12 V, output power 700 W, prototype circuit of an full-bridge LCC resonant converter with synchronous rectification was implemented. Theoretical analyses are verified with the experimental results.

[1]J. M. Burdio, F. Canales, P. M. Barbosa, and F. C. Lee, “Comparison study of fixed-frequency control strategies for ZVS DC/DC series resonant converters,” in Proc. Power Electronics Specialists Conference,2001,pp. 427-432.
[2]J. Feng, Y. Hu, W. Chen, and C. C. Wen, “ZVS Analysis is of Asymmetrical Half-Bridge Converter,” IEEE PESC, Vol. 1, pp. 243-247, 2001.
[3]J. E. Baggio, H. L. Hey, H. A. Grundling, H. Pinheiro, and J. R. Pinheiro, “Isolated interleaved-phase-shift-PWM DC-DC ZVS converter,” IEEE Transactions on Industry Applications, vol. 39,no.6,pp. 1795-1802,Dec. 2003.
[4]M. Delshad and H. Farzanehfard, “A new ZCS-PWM converter for high voltage high power application,” in Proc. Electrical Machines and Systems on International Conference, 2005, pp. 1161-1165.
[5]H. S. Choi and B. H. Cho, “Novel zero-current-switching (ZCS) PWM switch cell minimizing additional conduction loss,” IEEE Transactions on Industrial Electronics, vol.49, no. 6, pp. 165-172,Feb.2002.
[6]G. A. Karveis and S. N. Manias, “Analysis and design of a flyback zero-current switched(ZCS) quasi-resonant (QR) AC/DC converter,” in Proc. Power Electronics Specialists Conference,1996, pp.475-480.
[7]Dianbo Fu, “Improved Resonant Converters with a Novel Control Strategy for High-Voltage Pulsed Power Supplies,” Faculty of the Virginia Polytechnic Institute and State University, pp. 32-37,February.2010..
[8]B. Yang, F. C. Lee, A. J. Zhang, and G. S. Huang, “LLC Resonant Converter for Front End DC/DC Conversion,” in Proc. IEEE APEC, pp.1108-1112,Mar.2002.
[9]Ray-Lee Lin, and Chiao-Wen Lin, “Design Criteria for Resonant Tank of LLC DC-DC Resonant Converter,” IECON, pp. 427-432, 7-10 Nov.2010.
[10]Dianbo Fu, “Topology Investigation and System Optimization of Resonant Converters,” Faculty of the Virginia Polytechnic Institute and State University, pp. 125-135,February.2010.
[11]Texas Instrument, Inc, “8-pin High-Performance Resonant Mode Controller,” Datasheet, September 2008.
[12]NXP Semiconductors, “TEA1791AT GreenChip synchronous rectifier controller,” Datasheet, 7 June 2010.
[13]TDK Ferrite Cores for Power Supply and EMI/RFI Filter,2007.
[14]謝世弘，LLC 半橋串聯諧振式轉換器之設計考量與研製，國立台灣科技大學電子工程系碩士論文，2005年。
[15]張書僑，儀器用高功率雙輸出電源供應器之研究，國立台灣科技大學電子工程系碩士論文，2014年
[16]鐘俊智，具同步整流疊接式半橋串聯諧振轉換器研製，國立台灣科技大學電子工程系碩士論文，2014年
[17]蔡富斌，具同步整流之數位控制半橋串聯諧振轉換器之研製，國立台灣科技大學電子工程系碩士論文，2012年
[18]梁適安，交換式電源供給器之理論與實務設計，第二版，全華圖書股份有限公司，2008年。
[19]吳義利，切換式電源轉換器原理與實用設計(實力設計導向)，文笙書局股份有限公司，2012年。