本論文旨在研製應用雙組昇降壓轉換器建構數位控制式變流器系統，以雙組昇降壓轉換器併合來呈現變流器之特性。各組昇降壓轉換器輸出均為具直流準位且大於零之弦波交流電壓，當兩組昇降壓轉換器輸出相位差180°時，負載端可得到與市電電壓大小110Vrms和頻率60Hz相符之正弦電壓，故在控制上須具有高動態響應速度，使開關能在預期之操作點快速切換，並以數位信號處理器為控制核心，實現變流器系統之數位化控制。控制策略採用雙迴圈控制方式，外迴圈以電壓控制模式，使輸出達到穩壓之效果；而內迴圈則藉由電流控制模式，提高系統穩定度，並採用定頻方式修正開關導通率，使變流器輸出達到預期之弦波電壓。最後，本文以數位信號處理器TMS320LF2407A為核心，實際完成一額定輸出功率300W，輸出電壓110Vrms/60Hz之變流器系統。

The purpose of the thesis is to study on digital-control inverter system with dual buck-boost converter, using the dual buck-boost converter combined together to display the properties of inverter. When the dual buck-boost converter’s output sinusoidal voltage are larger than zero volt with dc offset and one converter’s output sinusoidal voltage is different from the other by 180 degrees out of phase, the load gains the 110Vrms/60Hz sinusoidal voltage. So the system should be high-dynamic under control to make converter’s switch to work with variable operating point and using the DSP to reach digital control inverter system. The control method is using double loop control. The outer loop is using voltage control mode to reach output voltage constantly, and the inner loop is using current control mode to make the system more stable. By controlling the switching on the constant frequency to let the output voltage will reach what we want. Finally, the thesis is using the DSP TMS320LF2407A to reach the digital-control inverter system. The experimental results show that the inverter system can supply 300W, and the output voltage is 110Vrms/60Hz.

[1] J. C. Diehj and A. Mestre, “Ecodesign and renewable energy: how to integrate renewable energy technologies into consumer products,” Fourth Int. Symposium Environmentally Conscious Design Inverse Manuf., 2005, pp. 282-288.
[2] A. D. Aquila, M. Liserre, R. A. Mastromauro, V. M. Moreno, and A. Pigazo, “Wavelet-based islanding detection in grid-connected PV systems,” IEEE Trans. Ind. Electron., vol. 56, no. 11, pp. 561-571, 2009.
[3] 張勇、崔蓓蓓和邱宇晨，潮流發電-一種開發潮汐能的新方法，上海市電力公司，2009年。
[4] 吳財福、陳裕愷和張健軒，太陽光電能供電與照明系統綜論第二版，全華圖書股份有限公司，2007年。
[5] P. W. Lee, Y. Z. Lee, and B. T. Lin, “Power distribution systems for future homes,” in Proc. IEEE Int. Conf. Power Electronics Drive System, 1999, pp. 1140-1146.
[6] 林傳昇和李佩謙，數位訊號處理器(DSP)簡介與應用，全華科技圖書股份有限公司，1996年
[7] 黃永達，信號與系統(精簡本)，東華書局，1999年。
[8] 張天錫，電力電子學第三版，東華書局，2004年。
[9] 林右鎗，具電流修正控制之市電併聯型變流器，國立成功大學電機工程學系碩士論文，2010年。
[10] 林軒，具弦波調變與空間相量調變之三相變流器系統，國立成功大學電機工程學系碩士論文，2011年。
[11] 黃淑萱，應用於潮流發電之數位控制三相電源轉換系統，國立成功大學電機工程學系碩士論文，2011年。
[12] 詹智強，直接變換式交流至交流補償轉換器之研究，國立成功大學電機工程學系碩士論文，1996年。
[13] 江錫津，應用空間向量脈寬調變技術之數位式高功因單相/三相轉換器，國立雲林科技大學電機工程系碩士論文，2003年。
[14] J. Almazan, N. Vazquez, C. Hernandez, and J. Arau, “A comparison between the buck, boost and buck-boost inverters,” in Proc. IEEE Power Electronics Congress, 2000, pp. 341-346.
[15] S. R. H. Amrei, D. G. Xu, and Y. Q. Lang, “High power DC-DC converters under large load and input voltage variations: a new approach,” in Proc. IEEE Int. Conf. Power Engineering, 2005, vol. 2, pp. 815-820.
[16] Z. Yao, L. Xiao, and Y. Yan, “Dual-buck full-bridge inverter with hysteresis current control,” IEEE Trans. Ind. Electron., vol. 56, no. 8, pp. 3153-3160, 2009.
[17] Y. Ma. B. Qiu, and Q. Cong, “Research on single-stage inverter based on bi-directional buck DC converter,” in Proc. IEEE Power Electronics Distributed Generation System, 2010, pp. 299-303.
[18] R. Tymerski, V. Vorperain, F. C. Y. Lee, and W. T. Baumann, “Nonlinear modeling of the PWM switch,” IEEE Trans. Power Electron., vol. 4, no. 2, pp. 225-233, 1989.
[19] A. Prodic, D. Maksimovic, and R. W. Erickson, “Design and implementation of a digital PWM controller for a high-frequency switching DC-DC power converter,” in Proc. IEEE Conf. IECON, 2001, vol. 2, pp. 893-898.
[20] S. Chattopadhyay and S. Das, “A digital current-mode control technique for DC-DC converters,” IEEE Trans. Power Electron., vol. 21, no. 6, pp. 1718-1726, 2006.
[21] Y. Y. Tzou, “DSP-based fully digital control of a PWM DC-AC converter for AC voltage regulation,” in Proc. IEEE PESC, 1995, pp. 139-144.
[22] A. I. Maswood, “A switching loss study in SPWM IGBT inverter,” in Proc. IEEE Int. Conf. Power Energy, 2008, pp. 609-613.
[23] 黃河，直接電流控制法之併聯電力系統換流器之研製，國立成功大學電機工程學系碩士論文，2009年。
[24] P. W. Lee, Y. Z. Lee, and B. T. Lin, “Voltage mode control of single phase boost inverter,” in Proc. IEEE Int. Conf. Electrical Computer Engineering, 2008, pp. 665-670.
[25] 董勝源，DSP TMS320LF2407與C語言控制實習，匯高出版社，2004年。
[26] 新華電腦，DSP從此輕鬆跑(以TI DSP 320LF 2407A為主題)，台科大圖書股份有限公司，2003年。
[27] 林容益，TMS320F240x組合語言及C語言多功能控制應用，全華科技圖書股份有限公司，2005年。
[28] F. Xu, H. Ma, B. Liu, and L. Dong, “Third-order sliding mode controller for buck inverter,” in Proc. IEEE IECON, 2008, pp. 1021-106.
[29] R. O. Caceres and I. Barbi, “A boost DC-AC converter: analysis, design, and experimentation,” IEEE Trans. Power Electron., vol. 14, no. 1, pp. 134-141, 1999.
[30] Z. Wei, D. D. C. Lu, and V. G. Agelidis, “Current control of grid-connected boost inverter with zero steady-state error,” IEEE Trans. Power Electron., vol. 26, no. 10, pp. 2825-2834, 2011.
[31] D. Cortes, N. Vazquez, and J. Alvarez-Gallegos, “Dynamical sliding-mode control of the boost inverter,” IEEE Trans. Ind. Electron., vol. 56, no. 9, pp. 3467-3476, 2009.
[32] M. Jang, M. Ciobotaru, and V. G. Agelidis, “Grid-connected fuel cell system based on a boost-inverter with a battery back-up unit,” in Proc. IEEE Int. Conf. Power Electronics, 2011, pp. 1637-1644.
[33] J. Minsoo and V. G. Agelidis, “A minimum power-processing-stage fuel-cell energy system based on a boost-inverter with a bidirectional backup battery storage,” IEEE Trans. Power Electron., vol. 26, no. 5, pp. 1568-1577, 2011.
[34] P. Sanchis Gurpide, O. Alonso Sadaba, L. Marroyo Palomo, T. Meynard, and E. Lefeuvre, “A new control strategy for the boost DC-AC inverter,” in Proc. IEEE PESC, 2001, vol. 2, pp. 974-979.
[35] P. Sanchis, A. Ursaea, E. Gubia, and L. Marroyo, “Boost DC-AC inverter: a new control strategy,” IEEE Trans. Power Electron., vol. 20, no. 2, pp. 343-353, 2005.
[36] B. Kalaivani, V. Kumar Chinnaiyan, and J. Jerome, “A novel control strategy for the boost DC-AC inverter,” in Proc. IEEE Int. Conf. India Power Electronics, 2006, pp. 341-344.
[37] Y. Fang and X. Ma, “A novel PV microinverter with coupled inductors and double-boost topology,” IEEE Trans. Power Electron., vol. 25, no. 12, pp. 3139-3147, 2010.
[38] R. O. Caceres, W. M. Garcia, and O. E. Camacho, “A buck-boost DC-AC converter: operation, analysis, and control,” in Proc. IEEE Int. Power Electronics Congress, 1998, pp. 126-131.
[39] M. Jang, M. Ciobotaru, and V. G. Agelidis, “A single-stage fuel cell energy system based on a buck-boost inverter with a backup energy storage unit,” IEEE Trans. Power Electron., vol. 27, no. 6, pp. 2825-2834, 2012.
[40] P. Sanchis, A. Ursua, E. Gubia, and L. Marroyo, “Buck-boost DC-AC inverter: proposal for a new control strategy,” in Proc. IEEE PESC, 2004, vol. 5, pp. 3994-3998.
[41] P. Sanchis, A. Ursua, E. Gubia, and L. Marroyo, “Design and experimental operation of a control strategy for the buck-boost DC-AC inverter,” IEE Proc. Electric Power Appl., vol. 152, no. 3, pp. 660-668, 2005.
[42] J. Zhu, L. Xiang, and S. Liu, “Double-loop control and stability analysis based on three-phase buck-boost inverter,” in Proc. IEEE Int. Conf. Electrical Machines System, 2008, pp. 1673-1676.
[43] J. Knight, S. Shirsavar, and W. Holderbaum, “An improved reliability Cuk based solar inverter with sliding mode control,” IEEE Trans. Ind. Electron., vol. 21, no. 4, pp. 1107-1115, 2006.
[44] Y. Zhou, “Study of buck-boost photovoltaic inverter based on discrete sliding mode control strategy,” in Proc. IEEE Mechanic Automation Control Engineering, 2011, pp. 1643-1647.
[45] R. X. Gong, L. L. Xie, K. Wang, and C. D. Ning, “A novel modeling method of nonideal buck-boost converter in DCM,” in Proc. IEEE Int. Conf. Information Computing, 2010, vol. 3, pp. 182-185.
[46] 盧明智和黃敏祥，OP Amp 應用+實驗模擬，全華科技圖書股份有限公司，1995年。
[47] 梁適安，交換式電源供給器之理論與實務設計，全華圖書股份有限公司，2008年。
[48] 李嘉猷、張幼旻、沈紘宇，“應用數位信號處理器於雙組轉換器實現變流器特性之研究,” 中華民國第三十二屆電力工程研討會論文集，2011年，799-803頁。