本論文所提出之架構為使用混合切換技術搭配單級式非對稱半橋功率因數修正器來達成一次側開關之零電壓切換導通以及二次側輸出二極體之零電流切換截止，使轉換器擁有高輸入功率因數、低切換損耗以及高轉換效率。混合切換技術是一種將諧振概念結合到傳統脈波寬度調變(Pulse Width Modulation, PWM)技術的一種作法，此轉換器架構在一個切換週期內將同時具有線性電流以及諧振電流這兩種特性。
論文開頭針對所提出之混合切換技術做了介紹以及分析，接著介紹功率因數修正的控制方法。與傳統脈波寬度調變控制的轉換器相比，此技術不需在原架構上增加元件。測試並驗證一實作電路，其性能與所提出之構想相符合。

This thesis presents a hybrid-switching single-stage asymmetrical half-bridge power factor corrector to achieve the zero-voltage-switching (ZVS) turn-on operation for primary switches and the zero-current-switching (ZCS) turn-off operation for secondary diodes. High input power factor , low switching losses and high conversion efficiency can be achieved. The studied hybrid-switching technique incorporates resonant operation into the conventional pulse-width modulation (PWM) circuit. The converter topology preserves the merits of both PWM and resonant operations in a single switching cycle. In this thesis, the hybrid-switching technique is introduced and analyzed. The control strategy of the developed power factor corrector is also discussed. Simple and reliable fixed-frequency PWM control can be used. Compared with the conventional PWM control converter, no extra components are necessary. A laboratory prototype was built and tested to verify the performance of the proposed scheme.

[1]A. l. Pressman, “Switching Power Supply Design,” McGraw-Hill, Inc., 1998.
[2]洪瑞鴻，「2kW功率因數修正器研製」，國立台灣科技大學電子工程系研究所碩士論文，民國94年。
[3]宋自恆、林慶仁，「功率因數修正器之原理與常用元件規格」，新電子科技雜誌217期，民國93年4月。
[4]K. Yao, X. B. Ruan, X. J. Mao, and Z. Ye, “DCM Boost PFC Converter with High Input PF,” Applied Power Electronics Conference and Exposition (APEC), 2010.
[5]C. A. Canesin and I. Barbi, “Analysis and Design of Constant-Frequency Peak-Current-Controlled High-Power-Factor Boost Rectifier with Slope Compensation,” Applied Power Electronics Conference and Exposition (APEC), 1996, Vol. 2, pp.807-813, Mar. 1996.
[6]C. Zhou, “Active Boost Power Factor Analysis and Design,” IBM Corporation, Apr. 20, 1989.
[7]M. F, Schlecht and B. A. Miwa, “Active Power Factor Correction for Switching Power Supplies,” IEEE Transactions on Power Electronics, Vol. 1. No. 4. , Oct. 1987.
[8]曾軍皓，「高效能功率因數修正器研製」，國立台灣科技大學電子工程系研究所碩士論文，民國95年。
[9]林建宇，「雙模式升壓型功率因數修正器最佳化設計」，國立台灣科技大學電子工程系研究所碩士論文，民國99年。
[10]N. Mohan, T. M. Undeland, and W. P. Robbins, “Power Electronics Converters, Applications and Design,” John Wiley & Sons, 3rd Edition, 2003.
[11]S. Kim and P. N. Enjeti, “A Modular Single-Phase Power Factor Correction Scheme With a Harmonic Filtering Function,” IEEE Transactions on Industrial Electronics, Vol. 50, No. 2, pp.328-335, Apr. 2003.
[12]K. H. Liu and F. C. Lee, “Zero-Voltage Switching Technique in DC/DC Converter,” IEEE Transactions on Industrial Electronics, Vol. 5, No. 3, pp. 293-304, Jul. 1990.
[13]K. Yoshida, T. Ishii, and N. Nagagata, “Zero Voltage Switching Approach for Flyback Converter,” in Telecommunications Energy Conference, Washington, DC, 1992, pp. 324-329.
[14]C. Henze, H. Martin, and D. Parsley, “Zero-Voltage Switching in High Frequency Power Converters Using Pulse Width Modulation,” Applied Power Electronics Conference and Exposition (APEC), 1988, pp. 33-40.
[15]F. C. Lee, “High-Frequency Quasi-Resonant and Multi-Resonant Converter Technologies,” Industrial Electronics Society, 1988, pp. 509-521.
[16]J. Feng, Y. Hu, W. Chen, and C. C. Wen, “ZVS Analysis of Asymmetrical Half-Bridge Converter,” Power Electronics Specialists Conference, 2001, Vol. 8, No. 4, pp. 423-430.
[17]J. A. Bassett, “DC/DC Converter Switching at Zero Voltage,” U.S. Patent, 4959763, Sep. 25, 1990.
[18]C. P. Henze, D. S. Lo, and H. C. Martin, Jr., “Zero-Voltage Resonant Transition Switching Power Converter,” U.S. Patent, 5057986, Oct. 15, 1991.
[19]P. Athalye, D. Maksimovic, and R. Erickson. “Improving Efficiency of the Active-Clamped SEPIC Rectifier at High Line Frequencies,” Applied Power Electronics Conference and Exposition (APEC), 2005, Vol. 2, pp. 1152-1157.
[20]M. Chen and J. Sun, “Reduced-Order Averaged Modeling of Active-Clamp Converters,” IEEE Transactions on Power Electronics, Vol. 21, No. 2, pp. 487-494, Mar. 2006.
[21]Y. Hakoda, T. Ninomiya, M. Shoyama, and T. Hashimoto, “Effect of Clamp Capacitor on the Stability of Active-Clamp DC-DC Converter,” Power Electronics Specialists Conference (PESC), 1998, pp. 355-361.
[22]H. Martin, “Topology for Miniature Power Supply with Low Voltage and Low Ripple Requirements,” U.S. Patent 4618919.
[23]R. L.Steigerwald, “A Comparison of Half-Bridge Resonant Converter Topologies,” IEEE Transactions on Power Electronics, Vol. 3, No. 2, pp. 174-182, Apr. 1988.
[24]K. AI. Haddad, A. Bellahnid, V. Rajagopala, Y. Cheron, and H. Foch, “Novel Control Strategy to Improve the Dynamic Performance of a Series Resonant Converter,” Industry Applications Society Annual Meeting, 1988, pp. 806-812.
[25]Y. Ohashi, Y. Kuwata, and K. Mizuguti, “A 100 kHz, 2.7k W Rectifier Using a Series-Resonant Converter by Passing Discharge Current,” Telecommunications Energy Conference Florence, 1989, pp. 16.5/1-16.5/7.
[26]S. Sooksatra and C. Q. Lee, “Current Driven Series Resonant Converter,” Applied Power Electronics Conference and Exposition, 1990, Vol. 2, pp. 128-139.
[27]W. M. Moussa and J. E. Morris, “Steady State Analysis for an Off-Line Series Resonant Converter,” Southern Tier Technical Conference, US, 1990, pp. 23-29.
[28]S. Sooksatra and C. Q. Lee, “Non-Resonant Coupled Parallel Resonant Converter,” Circuits and Systems, 1989, pp. 781-784.
[29]I. Batarseh and C. Q. Lee, “High-Frequency High-Order Parallel Resonant Converter,” IEEE Transactions on Industrial Electronics, Vol. 36, No. 4, pp. 1708-1716, Nov. 1989.
[30]C. Q. Lee and S. Sooksatra, “Current Programmed Control Nonresonant Coupled Parallel Resonant Converter,” Power Electronics and Variable-Speed Drives Conference London, 1990, pp. 142-147.
[31]Y. Kuwata, Y. Ohashi, and K. Yotsumoto, “Characteristics of a New Series-Resonant Converter with a Parallel Resonant Circuit,” Telecommunications Energy Conference Sweden, 1987, pp. 204-210.
[32]M. Emsermann, “An Approximate Steady State and Small Signal Analysis of the Parallel Resonant Converter Running above Resonant,” Power Electronics and Variable-Speed Drives Conference London, 1990, pp. 9-14.
[33]R. Liu and C. Q. Lee, “The LLC-type Series Resonant Converter-Variable Switching Frequency Control,” Symposium on Circuits and Systems, Champaign, IL, pp. 509-512.
[34]Z. Fang, S. Duan, C. Chen, X. Chen, and J. Zhang, “Qptimal Design Method for LLC Resonant Converter with Wide Range Output Voltage,” Applied Power Electronics Conference and Exposition, 2013, pp. 2106-2111.
[35]L. Hang, S. Wang, Y. Gu, W. Yao, and Z. Lu, “High Cross-Regulation Multioutput LLC Series Resonant Converter with Magamp Postregulator,” IEEE Transactions on Power Electronic, Vol. 58, No. 9, pp. 3905-3913, Sep. 2011.
[36]H. Hu, X. Fang, F. Chen, Z. J. Shen, and I. Batarseh, “A Modified High-Efficiency LLC Converter with Two Transformers for Wide Input-Voltage Range Application,” IEEE Transactions on Power Electronic, Vol. 28, No. 4, pp. 1946-1960, Apr. 2013.
[37]B. Yang, “Topology Investigation of Front End DC/DC Converter for Distributed Power System,” Virginia Tech Electrical and Computer Engineering Dissertation, 2003.
[38]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96年。
[39]黃偉銓，「具前級功因調整器之半橋LLC諧振式電源轉換器研製」，大同大學電機工程系研究所碩士論文，民國98年。
[40]B. Gu, C. Y. Lin, B. F. Chen, J. Dominic and J. S. (Jason) Lai, “Zero-Voltage-Switching PWM Resonant Full-Bridge Converter with Minimized Circulating Losses and Minimal Voltage Stresses of Bridge Rectifiers for Electric Vehicle Battery Chargers,“ IEEE Transactions on Industrial Electronics, Vol. 28, No. 10, pp. 4657-4667, Oct. 2013.
[41]B. Gu, J. Dominic, J. S. Lai and H. B. Ma, “Hybrid Transformer ZVS/ZCS DC-DC Converter for Photovoltaic Microinverters,” Applied Power Electronics Conference and Exposition, 2013, pp. 16-22.
[42]林建宇，「隔離型混合切換返馳式轉換器之分析與設計」，國立臺灣科技大學電子工程系研究所博士論文，民國103年。