本文提出一新型線互動式不斷電電源供應器，其系統是由全橋式整流器、電壓源換流器、串聯變壓器及雙向昇降壓轉換器所組成。其中全橋整流器將輸入的交流電壓轉換為直流電壓，此直流電壓不僅可對電池組作定電壓充電之外，也可透過換流器轉換成交流電壓後提供給低頻串聯變壓器。而串聯變壓器則能補償市電的各種異常情況以達到額定輸出電壓。本文將針對系統操作在不同模式下的情形做分析說明，當市電正常時，雙向昇降轉換器將被控制成一降壓轉換器，對蓄電池做定電壓方式充電；而當市電中斷時，轉換器則被控制成一昇壓轉換器，提供直流匯流排電壓給予換流器作轉換。此特性將使轉換器針對不同操作模式，扮演充電器或昇壓轉換器的角色。此外本系統採用積分比例控制器使系統的暫態響應能夠擁有無穩態誤差、無超越量和上升時間可設計等優點。最後以模擬與實驗結果來驗證系統性能。

This paper presents a novel line-interactive uninterruptible power supply (UPS) system. The proposed system is composed of a full bridge rectifier, a voltage source inverter (VSI), a series transformer and a bidirectional buck boost converter. The full-bridge rectifier transforms the AC input voltage into DC voltage. This DC voltage can not only charge the battery by means of constant voltage charging method (CVCM) but also provide AC voltage to the series transformer through the DC/AC inverter. Meanwhile, the series transformer compensates the utility variations to satisfy the rating voltage. Analysis of the proposed system while it is operated in different modes is presented. The converter serves as a buck converter to charge the battery when the utility is normal and it turns into a boost converter to supply the emergency power to the VSI when the utility fails. This bidirectional feature of the converter allows system to act as automatic voltage regulator (AVR)/ battery charger or backup power source in different operation modes. An integral proportional (IP) controller is adopted to improve the transient response of the system. Simulation and experimental results are presented to verify the performance of system.

[1] 半導體工廠電力品質研討會講義，國立清華大學主辨，87年12月。
[2] M. J. Sullivan, T. Vardell, and M. Johnson, “Power interruption costs to industrial and commercial consumers of electricity,” IEEE Trans. Ind. Electron., vol. 33, no. 6, pp. 1448-1458, Nov-Dec. 1997.
[3] G. Wacker and R. Billinton, “ Customer cost of electric service interruptions,” IEEE in Proc., vol. 77, no. 6, pp. 919-930, June 1989.
[4] A. Campos, G. Joos, P. D. Ziogas, and J. F. Lindsay, “Analysis and design of a series-connected PWM voltage regulator for single-phase ac sources,” IEEE Trans. Ind. Applicat., vol. 32, pp. 1285–1292, Nov./Dec. 1996.
[5] S. J. Chiang, C. Y. Yen, and K. T. Chang, “A multimodule parallelable series-connected PWM voltage regulator,” IEEE Trans. Ind. Electron., vol. 48, pp. 506–516, June 2001.
[6] 羅天賜，“電壓驟降概論”，工業技術研究院能源與資源研究所，台達電子工業股份有限公司技術專文。
[7] 洪穎怡/張錦程，“電力系統電壓驟降” ，電機月刊第十二卷第十一期，2002年十一月號。
[8] C. J. Melhorn, A. Braz, P. Hofmann, and R. J. Mauro, “An evaluation of energy storage techniques for improving ride-through capability for sensitive customers on underground networks,” IEEE Trans. Ind. Electron., vol. 33, no. 4, pp. 1083-1095, August 1997.
[9] H. W. Park, S. J. Park, J. G. Park, and C. U. Kim, “A Novel high-performance voltage regulator for single-phase AC Sources,” IEEE Trans. Ind. Electron., vol. 48, no. 3, June 2001.
[10] B. H. Kwon, G. Y. Jeong, S. H. Han, and D. H. Lee, “ Novel line conditioner with voltage up/down capability,” IEEE Trans. Ind. Electron., vol. 49, no. 5, pp. 1110-1119, Oct. 2002.
[11] A. Khoei and S. Yuvarajan, “Single-phase AC-AC converters using power MOSFETs,” IEEE Trans. Ind. Electron., vol. 35, no. 3, pp. 442-443, Aug. 1988.
[12] S. M. Hietpas and M. Naden, “Automatic voltage regulator using an AC voltage-voltage converter,” IEEE Trans. Ind. Electron., vol. 36, no. 1, pp. 33-38, Jan-Feb. 2000.
[13] M. T. Tsai and C. H. Liu, “Design and implementation of a cost-effective quasi line-interactive UPS with novel topology,” IEEE Trans. Power Electron., Vol. 18, No.14, pp. 1002-1011, July 2003.
[14] M. H. Rashid 著，張天錫 譯，“Power electronics : circuits, devices and applications”，東華書局 印行。
[15] 梁適安編著 ”交換式電源供給器之理論與實務設計”，全華科技圖書。
[16] N. Mohan, T. M. Undeland, and W. P. Robbins, “Power electronics: converters, applications, and design,” Second Edition, John Wiley & Sons, Inc., 1996.
[17] 黃文良，趙世文，王志浩，“電子變壓器及電路”，全華科技圖書有限公司。
[18] George C. Chryssis 著，梁適安 譯，“High-frequency switching power supplies : theory and design”，全華科技圖書。
[19] B. R. Lin, T. C. Wei, and H. K. Chang, “Novel AC Line Conditioner For Power Factor Correction,” IEEE Trans Aerospace And Electronic., vol. 40, no. 1, January 2004.
[20] M. Vilathgamuwa, P. Ranjith, and S. S. Choi, “Performance improvement of the dynamic voltage restorer with closed-loop load voltage and current-mode control” IEEE Trans. Power Electron., vol. 17, no. 5, pp. 824-834, September 2002.
[21] http://www.eedesign.com.tw/article/Spotlight/0504_mcu/0504_mcu.htm.
[22] 山崎浩 著，陳連春 譯，”電子電路設計心得集錦”，建興出版社。
[23] 洪敬恆，“新型相移脈波寬度調變交流穩壓器之研製”，國立中央大學電機所碩士論文，民國93年7月。
[24] Kai Zhang, Yong Kang, Jian Xiong, and Jian Chen, ”Direct repetitive control of SPWM inverter for UPS purpose,” IEEE Trans. Power Electron., vol. 18, no.3, pp. 784-792, May 2003
[25] Cassiano Rech, Humeberto Pinheiro, Hilton Abilio, Helio Leaes Hey, and Jose Renes Pinheiro, “Comparison of digital control techniques with repetitive integral action for low cost PWM inverters,” IEEE Trans. Power Electron., vol. 18, no.1, pp. 401-410, January 2003.
[26] Cassiano Rech, Humeberto Pinheiro, Hilton Abilio, Helio Leaes Hey, and Jose Renes Pinheiro, “A modified discrete control law for UPS applications,” IEEE Trans. Power Electron., vol. 18, no.5, pp. 1138-1145, September 2003.
[27] Mauro Carpita, and Mario Marchesoni, “Experimental study of a power conditioning system using sliding mode control,” IEEE Trans. Power Electron., vol. 18, no.5, pp. 731-742, September 1996.
[28] W.-L.Lu, S.-N.Yeh, J.-C.Hwang and H.-P.Hsieh, “Development of a single-phase half-bridge active power filter with the function of uninterruptible power supplies,” IEE Proc.-Eletr. Power Appl., vol. 147, no.4, pp.313-319, July 2000.
[29] C. M. Liaw, F. J. Lin, and Y. S. Kung, “Design and implementation of a high performance induction motor servo drive,” IEEE Trans. Power Electron., vol. 140, pp. 241–248, July 1993.
[30] 蒙以正編著，“Matlab入門與精進”，儒林圖書公司。
[31] dsPIC30F Family Reference Manual, Microchip Technology Inc., 2003.
[32] 黃英哲、董勝源編著，“TMS320C240原理與C語言控制應用實習”，長高科技圖書。
[33] IEC 1000-3-2, 1st Edition, 1995-2003, Commission Electro Technique International, 3, rue de Varembe, Geneve, Switzerland.