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| 研究生： |
黃詳凱 Shiang-Kai Huang |
|---|---|
| 論文名稱： |
數位控制交錯式LLC電能轉換器 Interleaved LLC Resonant Converters with Digital Control |
| 指導教授： |
呂錦山
Ching-Shan Leu |
| 口試委員: |
林瑞禮
Ray-Lee Lin 邱煌仁 Huang-Jen Chiu |
| 學位類別： |
碩士 Master |
| 系所名稱： |
電資學院 - 電機工程系 Department of Electrical Engineering |
| 論文出版年： | 2014 |
| 畢業學年度： | 102 |
| 語文別： | 英文 |
| 論文頁數： | 71 |
| 中文關鍵詞： | 交錯式LLC電能轉換器 、LLC電能轉換器 、數位控制 |
| 外文關鍵詞： | interleaved LLC converter, LLC converter, digital control |
| 相關次數： | 點閱：321 下載：16 |
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傳統LLC 諧振轉換器具有許多優點，因此被廣泛地應用在DC/DC 轉換。而交錯式LLC電能轉換器，相較於傳統LLC轉換器，更適合用於大電流輸出之場合。因交錯式LLC電能轉換器係由兩組LLC轉換器組成，應力得以分散，且相位交錯式的控制方法更可降低線路上之電流連波。然其仍有部分限制，如在半載以下操作之效率不高、兩相之間電流不匹配等問題。本論文將以損耗分析來驗證並提出相對應之解決方法。
本論文利用數位訊號處理器達成對轉換器之錯相控制，並使用數位控制解決上述問題，且建構一混合數位類比之模擬線路，用以研究類比電能轉換器與數位控制之關係，最終實現一具數位控制之交錯式LLC電能轉換器，並利用數位控制達成均流與效率最佳化。
The LLC resonant converter has several characteristics and it has been widely used in DC/DC power application. However, it has large current ripple on secondary side due to lacking output inductor. Several aluminum electrolytic capacitors have to be used in parallel to meet the ripple current specification and reduce output voltage ripple. Consequently, the power density of the converter is decreased.
The interleaved LLC converter is suitable for the high output current application since interleaved configuration has several features such as less stress on components and less current ripple. However, the interleaved LLC converter performs worse in terms of the system efficiency when it operates in low load. In addition, it also has a current balance issue due to tolerance of components. In this research, an analysis of above phenomenon and solutions are provided.
A digital signal controller is used to generate the interleaved control signal and achieve the control algorithms for the above mentioned problems. By employing the proposed techniques, the digital-control interleaved LLC converter with optimal control strategy is achieved. The low load efficiency is improved and the unbalance issue also be solved.
[1] M. M. Jovanovic, “Power Supply Technology – Past, Present, and Future,” available: http://www.deltartp.com/dpel/dpelconferencepapers/Keynote%202%20%283%29-%2815%29.pdf
[2] B. Yang, F. C. Lee, A. J. Zhang, and G. Huang, “LLC resonant converter for front end DC/DC conversion,” in Proc. Appl. Power Electron. Conf. Expo., Mar., 2002, pp. 1108–1112.
[3] B. Yang, “Topology investigation for front end DC/DC power conversion for distributed power system,” Ph.D. dissertation, Virginia Polytechnic Institute and State University, 2003.
[4] B. Lu, “Investigation of High-density Integrated Solution for AC/DC Conversion of a Distributed Power System,” Ph.D. dissertation, Virginia Polytechnic Institute and State University, 2006.
[5] D. Fu, “Topology investigation and system optimization of resonant converters,” Ph.D. dissertation, Virginia Polytechnic Institute and State University, 2010.
[6] S. H. Cho, C. S. Kim, and S. K. Han, “High-efficiency and low-cost tightly regulated dual-output LLC resonant converter,” IEEE Trans. Ind. Electron., vol. 59, no. 7, pp. 2982-2991, July, 2012.
[7] B. C. Hyeon, B. H. Cho, “Analysis and design of the LmC resonant converter for low output current ripple,” IEEE Trans. Ind. Electron., vol. 59, no. 7, pp. 2772-2780, Feb., 2012.
[8] J. Zhang, J. S. Lai, R. Y. Kim, W. Yu, “High-power density design of a soft-switching high-power bidirectional dc–dc Converter,” IEEE Trans. Power Electron., vol. 22, no. 4, pp.1145 -1153, July, 2007.
[9] J. Zou, A. Pratt, “Capacitor ripple current in an interleaved PFC converter,” IEEE Trans. Power Electron., vol. 24, no. 6, pp.1506 -1514, June, 2009.
[10] P. L. Wong, P. Xu, B. Yang, F. C. Lee, “Performance improvements of interleaving VRMs with coupling inductors,” IEEE Trans. Power Electron., vol. 16, no. 4, pp.499 -507, July, 2011.
[11] C. Adragna, S. De Simone and C. Spini "A design methodology for LLC resonant converters based on inspection of resonant tank currents," in Proc. Appl. Power Electron. Conf. Expo., Feb., 2008, pp.1361 -1367
[12] X. Fang , H. Hu, Z. J. Shen and I. Batarseh, "Operation mode analysis and peak gain approximation of the LLC resonant converter," IEEE Trans. Power Electron., vol. 27, no. 4, pp.1985 -1995, April, 2012.
[13] X. Fang, H. Hu, F. Chen, U. Somani, E. Auadisian, J. Shen and I. Batarseh, "Efficiency-oriented optimal design of the LLC resonant converter based on peak gain placement," IEEE Trans. Power Electron., vol. 28, no. 5, pp. 2285 -2296, May, 2013.
[14] T. Jin, K. Smedley, "Multiphase LLC series resonant converter for microprocessor voltage regulation," in Proc. Ind. Appl. Conf., Oct. 2006, pp. 2136 -2143.
[15] E. Orietti, P. Mattavelli, G. Spiazzi, C. Adragna, and G. Gattavari, “Analysis of multi-phase LLC resonant converters,” in Proc. Power Electron. Conf., Sept., 2009, pp. 464–471.
[16] M. Kim, "Two-phase interleaved LLC resonant converter with phase shedding control," in Proc. Int. Power Electron. Conf., June, 2010, pp. 1642 -1645.
[17] H. Figge, T. Grote, N. Froehleke, J. Boecker and P. Ide, "Paralleling of LLC resonant converters using frequency controlled current balancing," in Proc. Power Electron. Spec. Conf., June, 2008, pp. 1080 -1085.
[18] B. C. Kim, K. B. Park, C. E. Kim and G. W. Moon, "Load sharing characteristic of two-phase interleaved LLC resonant converter with parallel and series input structure," in Proc. Energy Convers. Congr. Expo., Sept., 2009, pp. 750 -753.
[19] E. Orietti , P. Mattavelli , G. Spiazzi , C. Adragna and G. Gattavari "Current sharing in three-phase LLC interleaved resonant converter", in Proc. Energy Convers. Congr. Expo., Sept., 2009, pp. 1145 -1152.
[20] E. Orietti , P. Mattavelli , G. Spiazzi , C. Adragna and G. Gattavari, "Two-phase interleaved LLC resonant converter with current-controlled inductor," in Proc. Power Electron. Conf., Sept., 2009, pp. 298 -304.
[21] Z. Hu, Y. Qiu, L. Wang and Y.F. Liu, "An interleaved LLC resonant converter operating at constant switching frequency," IEEE Trans. Power Electron., vol. 29, no. 6, pp. 2931-2943, June, 2014.
[22] K. H. Yi, G. W. Moon, "Novel two-phase interleaved LLC series-resonant converter using a phase of the resonant capacitor," IEEE Trans. Ind. Electron., vol. 56, no. 5, pp. 1815-1819, May, 2009.
[23] A. Gopiyani, V. Patel, “A closed-loop control of high power LLC Resonant Converter for DC-DC applications,” in proc. Eng. Nirma University Int. Conf., Dec. 2011, pp. 1-6.
[24] P. Drgona, M. Frivaldsky, and A. Prikopova, "Optimal design of digital control system for LLC resonant converter," in proc. Appl. Electro. Int. Conf., Sept. 2010, pp. 1-4.
[25] F. Kurokawa, K. Murata, "A new fast digital P-I-D control LLC resonant converter, " in Proc. Electro. Machine Syst. Int. Conf, Aug. 2011, pp. 1-5.
[26] C. Buccella, C. Cecati, R. Latafat, and K. Razi," Digital control of a half bridge LLC resonant converter," in proc. Power Electro. Motion Contr. Int. Conf., Sept. 2012, pp. LS6a.4-1-LS6a.4-6.
[27] J.H. Jung, H.S. Kim, J.H. Kim, M.H. Ryu and J.W. Baek, "High efficiency bidirectional LLC resonant converter for 380 V DC power distribution system using digital control scheme," in Proc. Appl. Power Electron. Conf. Expo., Feb., 2012, pp. 532 -538.
[28] K. Murata, F. Kurokawa, “Digitally controlled LLC resonant converter using modified FIR filter,” in Proc. Electro. Motion Contr. Int. Conf., Oct., 2012, pp. 1-4.
[29] T. Patarau, D. Petreus, R. Duma, P. Dobra, “Comparison between analog and digital control of LLC converter,” in Proc. Automation Quality and Testing Robotics Conf., May, 2010, pp. 1-6.
[30] Z. Hu, Y. Qiu, and Y.-F. Liu, “Digital implementation of load sharing method for interleaved LLC converters,” in Proc. Control Modeling Power Electron. Conf., June, 2013, pp. 1–7.
[31] MICROCHIP, "Digital Compensator Design for LLC Resonant Converter," available: http://ww1.microchip.com/downloads/en/AppNotes/01477a.pdf
[32] Texas Instrument, "TMS320F2802Piccolo Microcontrollers," available: http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=tms320f28027&fileType=pdf
