本論文介紹串聯諧振式轉換器(Series Resonant Converter, SRC)與LLC型式串聯諧振式轉換器(LLC-Type Series Resonant Converter, LLC SRC)的理論基礎及動作狀態分析，分析各動作區間之等效電路與推導串聯諧振轉換器各區間動作之數學模型。本論文同時針對全橋LLC串聯諧振式轉換器進行電路分析，並使用MATLAB數學模擬軟體完成品質因數(Q)、K因子、變壓器圈數比(NP/NS)與一次側激磁電感(Lm)之響應模擬。
本論文研製一台全橋LLC形式串聯諧振轉換器，藉由設定諧振頻率及特性阻抗，可計算出各元件之値。最後實作一台輸出規格為86V/23A之全橋LLC串聯諧振式轉換器以磷酸鋰鐵電池充電器之用，其具有零電壓切換及定電流控制，除了將實測結果和理論相互印證之外，並研擬未來研究方向。

This thesis focuses on the analysis of operation principles for a full-bridge LLC series resonant converter (SRC). The equivalent circuit and mathematical model for each operation modes are also discussed. MATLAB simulations are carried out to observe the influences of the quality factor (Q), the K factor, the transformer turns-ratio (Np/Ns), and the primary magnetizing inductance Lm on the converter voltage gain.
A full-bridge LLC-type SRC prototype with 86V/23A output for LiFePO4 battery charger applications was implemented and tested. For the specified resonant frequency and characteristic impedance, the circuit components can be calculated. Experimental results were shown to verify the theoretical analysis. Zero voltage switching and constant current control can be achieved.

[1]F. C. Lee, “High-Frequency Quasi-Resonant and Multi-Resonant Converter Technologies,“ IEEE IECON, pp. 509-521, 1988.
[2]J. G. Cho, J. A. Sabate, and F. C. Lee, “Novel Full Bridge Zero-Voltage-Transition PWM DC/DC Converter for High Power Applications,” IEEE PESC, pp. 143-149, 1994.
[3]J. Feng, Y. Hu, W. Chen, and C. C. Wen, “ZVS Analysis of Asymmetrical Half-Bridge Converter,” IEEE PESC, vol. 1, pp. 243-247, 2001.
[4]J. W. Baek, J. G. Cho, D. W. Yoo, G.H. Rim, and H.G. Kim, “An Improved Zero Voltage and Zero Current Switching Full Bridge PWM Converter with Secondary Active Clamp”, IEEE PESC, pp. 948-954. 1998.
[5]C. M. Wang, “A New Family of Zero-Current-Switching (ZCS) PWM Converter,” IEEE Transactions on Industrial Electronics, vol. 52, pp. 1117-1125, 2005.
[6]A. K. S. Bhat, “Analysis and Design of a Modified Series Resonant Converter,” IEEE Transactions on Power Electronics, vol. 8, pp. 423-430, 1993.
[7]J. P. Agrawal, K. siri, and C. Q. Lee, “Determination and Minimization of Cross Regulation in Multi-Output High Order SRC,” IEEE Trans. Circuits and Systems, vol. 1, pp. 692-695. 1990.
[8]F. S. Tsai and F. C. Lee. “A Complete DC Characterization of a Constant-Frequency, Clamped-Mode, Series Resonant Converter,” IEEE PESC, pp. 987-996, 1988.
[9]M. K. Kazimierczuk and S. Wong, “Frequency-Domain Analysis of Series Resonant Converter for Continuous Conduction Mode,” IEEE Transactions on Power Electronics, vol. 7, no. 2, pp. 270-279, 1992.
[10]M. K. Kazimierczuk and D. Czarkowski, “Resonant Power Converters,” Wiley-Interscience publication, ISBN 0-471-04706-6.
[11]S. C. Wong, A. D. Brown, Y. S. Lee, and S. W. Ng, “Parasitic Losses Modeling of a Series Resonant Converter Circuit,” IEEE Circuits and Systems, vol. 2, pp. 921-924, 1997.
[12]顏上進，「串聯諧振轉換器輕載調制策略之研究」，國立台灣科技大學電子工程系研究所博士論文，民國九十五年。
[13]謝明琮，「適合全載範圍操作之全橋相移式串聯諧振直流/直流轉換器研製」，國立台灣科技大學電子工程系研究所碩士論文，民國九十六年。
[14]楊馨傑，「液晶電視400瓦交/直流電源模組之研製」，國立台灣科技大學電子工程系研究所碩士論文，民國九十六年。
[15]謝士弘，「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研究所碩士論文，民國九十六年。
[16]施慶濃，「雙變壓器全橋串聯諧振式直流/直流轉換器研製」，國
立台灣科技大學電子工程系研究所碩士論文，民國九十七年。
[17]葉孟竺，「符合80 Plus規範之1 kW備援式伺服器電源供應器製
」，國立台灣科技大學電子工程系研究所碩士論文，民國九十九年。
[18]K. Siri and C. Q. Lee, “Constant Switching Frequency LLC-type Series Resonant Converter,” IEEE Circuits and Systems, vol. 1, pp. 513-516, 1989.
[19]R. Liu, C. Q. Lee, and A. K. Upadhyay, “Experimental Study of the LLC-type Series Resonant Converter,“ IEEE APEC, pp. 31-37, 1990.
[20]A. K. S. Bhat, “Analysis and Design of LCL-type Series Resonant Converter,” IEEE Transactions on Industrial Electronics, vol. 41, no. 1, pp. 118-124, 1994.
[21]B. Yang, F. C. Lee, A. J. Zhang, and G. S. Huang, “LLC Resonant Converter for Front End DC/DC Conversion,” IEEE APEC, pp. 1108-1112, 2002.
[22]B. Lu, W. Liu, Y. Liang, F. C. Lee, and J. D. Van Wyk, ”Optimal Design Methodology for LLC Resonant Converter,” IEEE APEC, pp. 533–538. 2006.
[23]L. Yan, L. Wenduo, L. Bing, and D. J. Wyk, “Design of Integrated Passive Component for a 1MHz 1kW Half-Bridge LLC Resonant Converter,” IEEE IAC, pp. 2223-2228, 2005.
[24]R. Liu, L. Batarseh, and C. Q. Lee, “Comparison of Performance Characteristics between LLC-type and Conventional Parallel Resonant Converters,” Electronics Letters, vol. 24, no. 24, pp. 1510-1511, 1988.
[25]R. Cheng, Y. Yang, and Y. Jiang, ”Design of LLC Resonant Converter with Integrated Magnetic Technology,” IEEE ICEMS, pp. 1351-1355, 2005.
[26]B. Yang, “Topology Investigation for Front End DC/DC Power Conversion for Distributed Power,” PhD dissertation, 2003.
[27]李豪哲，「鉛酸蓄電池反射式充電器之研製」，私立崑山科技大學電機工程系研究所碩士論文，民國九十二年。
[28]J. H. Aylor, A. Thieme and B. W. Johmson, “A Battery State-of-Charge Indicator for Electric Wheelchairs”, IEEE Trans. on Industrial Electronics, Vol. 39, No. 5, pp. 398-409, 1992.
[29]R. L. Steigerwald, “Pulse battery Charger Employing 1000 Ampere Transistor Switchs”, IEEE Ind. Appl. Soc. Meet., Vol. 2, pp. 1127-1132, 1977.
[30]T. J. Liang, T.Wen, K.C Tseng and J.F.Chen, “Implementation of A Regenerative Pulse Charger Using Hybrid Buck-Boost Converter”, 2001 4th IEEE International Conference on Power Electronics and Drive Systems. Vol. 2, pp. 437-442, 2001.
[31]Chih-Chiang Hua and Meng-Yu Lin, “A study of Charging Control of Lead-Acid Battery for Electric Vehicles”, Proceedings of the 2000 IEEE International symposium on Industrial Electronics, Vol. 1, pp. 135-140, 2000.
[32]文達，「具能量回送正負脈衝電池充電器之研製」，國立成功大學電機工程系碩士論文，民國九十年。
[33]黃俊盛，「電動車用鉛酸蓄電池快速充電策略之研究」，國立彰化師範大學工業教育學系碩士論文，民國九十年。