由於近年電動車的興起導致直流快充站需求大增，且市售的電動車品牌多樣，因此電池規格也有所不同。本論文以應用於電動車直流充電樁之DC-DC為研究目的，合併市售常見的兩種規格並研製出一台輸出電壓150 V～920 V、輸出最大電流100 A、最高輸出功率為50 kW的全橋LLC諧振式轉換器。透過調頻控制對輸出電壓進行升降壓，當輸出電壓無法透過調頻控制再調降時，將透過相移控制讓轉換器可輸出更低電壓。本論文利用LLC諧振式轉換器一次側開關具有零電壓切換的特性，與針對寬範圍增益的諧振槽進行分析，設計出一台高效率及寬範圍的諧振式轉換器。由於寬範圍輸出電壓的規格在設計時須考量因素較多，因此在本論文內詳細說明設計過程及挑選元件時需注意之問題，並規劃出寬範圍輸出電壓的諧振式轉換器設計流程圖，透過模擬與實作的驗證，因設備限制，電路實際測試到最大功率15 kW，輸出電壓150 V～920 V，其最高效率為98.07%的諧振式轉換器。

Due to the rise of electric vehicles in recent years, the demand for DC fast charging stations has greatly increased, and there are various electric vehi-cles and brands on the market, so the battery specifications are also differ-ent. Combining two common specifications on the market and developing a full-bridge LLC resonant converter with an output voltage of 150 V to 920 V, a maximum output current of 100 A, and a maximum output power of 50 kW, the output voltage is stepped up and down by frequency modu-lation control. When the output voltage can no longer be lowered through frequency conversion control, the output voltage range will be wider through phase shift control. In this paper, the primary side switch of LLC resonant converter has zero-voltage switching characteristics, and the res-onant tank for wide-range gain is analyzed, and a high-efficiency and wide-range resonant converter is designed. Since there are many factors to be considered in the design of the specification of the wide-range output voltage, the design process and the issues that must be paid attention to when selecting components are explained in detail in this thesis, and the design flow chart of the resonant converter with a wide-range output volt-age is planned. Through simulation and practical verification, due to equipment limitations, the circuit has actually tested to a resonant convert-er with a maximum power of 15 kW, an output voltage of 150 V to 920 V, and a maximum efficiency of 98.07%.

[1] 充電椿Retrieved from维基百科[Online]. Available：https://zh.wikipedia.org/zh-tw/%E5%85%85%E7%94%B5%E6%A1%A9
[2] MPS, How to Select a Lithium-Ion Battery Charge Management IC,
2020, pp. 1-3.
[3] Newsroom Porsche Taycan [Online]. Available：https://media.porsche.com/mediakit/taycan/zh_hant_tw/porsche-taycan/das-laden
[4] 飛宏科技，飛宏EV充電解決方案，飛宏科技，2019年。
[5] A. A. Abdullah Al-Karakchi, G. Putrus and R. Das, “Smart EV charg-ing profiles to extend battery life,” in Proc. International Universities Power Engineering Conference, 2017, pp. 1-4.
[6] 蔡富斌，具同步整流之數位控制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，2012年。
[7] 陳偉晟，適用於電動載具充電系統之寬範圍輸出電壓LLC諧振式轉換器，國立台灣科技大學電子工程系碩士論文，2021年。
[8] 張哲瑀，具同步整流預導通控制之寬範圍輸出電壓LLC諧振轉換器，國立台灣科技大學電子工程系碩士論文，2021年。
[9] 陳雅君，LLC諧振轉換器之設計與研製，國立成功大學，2009年。
[10] 吳義利，切換式轉換器，三版，高雄：文笙書局，2012年。
[11] 美台磁材 [Online]. Available：
http://www.aandt.com.tw/ugC_ShowroomItem_Detail.asp?hidPage1=1&hidShowKindID=2&hidShowID=27&hidClickNum=Y
[12] Q. Cao, Z. Li and H. Wang, "Wide Voltage Gain Range LLC DC/DC Topologies: State-of-the-Art," 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018, pp. 100-107, doi: 10.23919/IPEC.2018.8507899.
[13] X. Wu, Z. Bai and H. Ma, "An LLC Converter Operating in Su-per-Wide Output Voltage Range with Variable-Mode Control Strate-gy," 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC), 2018, pp. 1-6, doi: 10.1109/PEAC.2018.8590324.
[14] S. M. S. I. Shakib, S. Mekhilef and M. Nakaoka, "Dual bridge LLC resonant converter with frequency adaptive phase-shift modulation control for wide voltage gain range," 2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017, pp. 2265-2271, doi: 10.1109/ECCE.2017.8096441.
[15] Q. Cao, Z. Li, B. Xue and H. Wang, "Fixed Frequency Phase Shift Modulated LLC Resonant Converter Adapted to Ultra Wide Output Voltage Range," 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 2019, pp. 817-822, doi: 10.1109/APEC.2019.8722285.
[16] Yong-Seok Lee, Seok-Jin Hong, Seong-Wook Hyun and Chung-Yuen Won, "Design of Phase Control LLC resonant converter for fast load transient," 2016 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), 2016, pp. 793-797, doi: 10.1109/ITEC-AP.2016.7513056.
[17] H. Wu, Y. Li and Y. Xing, "LLC Resonant Converter With Semiactive Variable-Structure Rectifier (SA-VSR) for Wide Output Voltage Range Application," in IEEE Transactions on Power Electronics, vol. 31, no. 5, pp. 3389-3394, May 2016, doi: 10.1109/TPEL.2015.2499306.
[18] F. Alaql, A. Alhatlani and I. Batarseh, "Multi-Mode Rectifier-Based LLC Resonant Converter for Wide Input Voltage Range Applica-tions," 2021 IEEE Applied Power Electronics Conference and Expo-sition (APEC), 2021, pp. 349-354, doi: 10.1109/APEC42165.2021.9487294.
[19] U. Mumtahina and P. J. Wolfs, "Multimode Optimization of the Phase-Shifted LLC Series Resonant Converter," in IEEE Transactions on Power Electronics, vol. 33, no. 12, pp. 10478-10489, Dec. 2018, doi: 10.1109/TPEL.2018.2803741.
[20] 戈現勉."高效率LLC諧振變換器研究".浙江大學,2015。
[21] 李菊."全橋LLC諧振變換器的混合式控制策略".南京航空航天大學,2011。
[22] 戰麗娜."基於擴展描述函數法的LLC諧振變換器建模".青島大學,2014。
[23] 潘志傑."混合調變全橋LLC諧振變換器的優化設計".南京航空航天大學,2013。