معرفي يک مبدل SEPIC غير ايزوله جديد با بهره و راندمان بالا براي سيستم‌هاي فتوولتائيک
محورهای موضوعی : مهندسی برق و کامپیوترمسعود محمودي 1 , بهزاد میرزاییان دهکردی 2 , مهدی نیرومند 3
1 - دانشگاه اصفهان
2 - دانشگاه اصفهان
3 - دانشگاه اصفهان
کلید واژه: الگوریتم‌های بهینه‌سازی انرژیهای نو توربین بادی مزرعه بادی طراحی جانمایی,
چکیده مقاله :
در اين مقاله يک مبدل غير ايزوله SEPIC جديد که براي کاربردهاي فتوولتائيک مناسب مي‌باشد، معرفي و آناليز شده است. به علت پايين‌بودن ولتاژ خروجی سيستم‌های فتوولتائيک و نياز به ولتاژ خروجی بالا در بسياری از کاربردها از جمله کاربردهای متصل به شبکه، اين مبدل با بهره ولتاژ بالا طراحی شده است. اين مبدل مزايايي از قبيل ولتاژ خروجي بالا با همان استرس ولتاژ مبدل SEPIC عادي و بازده بالا را دارا مي‌باشد. در اين مبدل کليد تحت شرايط ZVS در حالت روشن‌شدن و ZCS در حالت خاموش‌شدن عمل مي‌کند، به همين دليل تلفات سوئيچينگ کاهش مي‌يابد.
In this paper, a new non-isolated SEPIC converter for photovoltaic application is introduced and analyzed. Regarding to low output voltage PV panel and high voltage application of PV systems, a high gain converter is designed. This converter has advantages such as high output voltage gain while keeping the switch voltage stress equal to a regular SEPIC converter, improve the turn-on and turn-off transients of the switch and high efficiency. Also, switching losses and EMI noise are reduced by soft switching method. The MOSFET operates at zero-voltage-switching (ZVS) turn-off and near zero-current-switching (ZCS) turn-on.
[1] H. Shiji, K. Harada, Y. Ishiharat, T. Todaka, and G. Alzamora, "A zero-voltage-switching bidirectional converter for PV systems," in Proc. 25th Int. Telecommunications Energy Conference, INTELEC'03, pp. 14-19, Yokohama, Japan, 23 Oct. 2003.
[2] S. Sarwan and N. Abdul Rahim, "Simulation of integrated SEPIC converter with multiplier cell for standalone PV application," in Proc. IEEE First Conf. on Clean Energy and Technology (CET), pp. 213-218, Kuala Lumpur, Malaysia, 27-29 2011.
[3] M. Meinhardt, G. Cramer, B. Burger, and P. Zacharias, "Multi-string-converter with reduced specific costs and enhanced functionality," Elsevier Science on Solar Energy, vol 69, sup. 6, pp. 217-227, Jul./Dec. 2000.
[4] Q. Zhao and F. C. Lee, "High-efficiency, high step-up DC-DC converters," IEEE Trans. Power Electron., vol. 18, no. 1, pp. 65-73, Jan. 2003.
[5] R. J. Wai and R. Y. Duan, "High step-up converter with coupled inductor," IEEE Trans. Power Electron., vol. 20, no. 5, pp. 1025-1035, Sep. 2005.
[6] R. J. Wai and R. Y. Duan, "High-efficiency power conversion for low power fuel cell generation system," IEEE Trans. Power Electron., vol. 20, no. 4, pp. 847-856, Jul. 2005.
[7] B. R. Lin and H. H. Lu, "Single-phase three-level PWM rectifier," in Proc. IEEE APEC'99, vol. 1, pp. 63-68, Jul. 1999.
[8] H. S. Chung, A. Ioinovici, and W. L. Cheung, "Generalized structure of bi-directional switched-capacitor dc/dc converters," IEEE Trans. Circuits Syst. I, Fundam. Theory Appl., vol. 50, no. 6, pp. 743-753, Jun. 2003.
[9] Q. Zhao and F. C. Lee, "High-efficiency, high step-up DC-DC converters," IEEE Trans. Power Electron., vol. 18, no. 1, pp. 65-73, Jan. 2003.
[10] W. Li and X. He, "Review of non-isolated high step-up DC-DC converters in photovoltaic grid-connected applications," IEEE Trans. on Industrial Electronics, vol. 58, no. 4, pp. 1239-1250, Apr. 2011.
[11] I. D. Kim, J. Y. Kim, E. C. Nho, and H. G. Kim, "Analysis and design of a soft-switched PWM sepic DC-DC converter," J. of Power Electronics, vol. 10, no. 5, pp. 461-467, Sep. 2010.
[12] H. L. Do, "Soft-switching SEPIC converter with ripple-free input current," IEEE Trans. on Power Electronics, vol. 27, no. 6, pp. 2879-2887, Jun. 2012.
[13] K. M. Smith, Jr. and K. Smedley, "Engineering design of lossless passive soft switching methods for PWM converters-part I- with minimum voltage stress circuit cells," IEEE Trans. Power Electron., vol. 16, no. 6, pp. 336-344, May 2001.
[14] K. M. Smith, Jr. and K. Smedley, "Engineering design of lossless passive soft switching methods for PWM converters-part ii. with non-minimum voltage stress circuit cells," IEEE Trans. Power Electronics., vol. 17, no. 6, pp. 864-873, Nov. 2002.
[15] C. J. Tseng and C. L. Chen, "Passive lossless snubbers for DC-DC converters," in Proc. 13th. Annual Appl. Power Electron. Conf., pp. 1049-1054, Feb. 1998.
[16] T. F. Wu and S. A. Liang, "A structural approach to synthesizing soft switching PWM converters," IEEE Trans. on Power Electronics, vol. 18, no. 1, pp. 38-43, Jan. 2003.
[17] A. Ghasemi, S. F. Eilaghi, and E. Adib, "A new non-isolated high step-up SEPIC converter for photovoltaic applications," in Proc. 3rd Power Electronics and Drive Systems Technology Conf., PEDSTC'12, pp. 51-56, 15-16 Feb. 2012.
[18] M. Bhunia and R. Gupta, "Voltage regulation of stand-alone photovoltaic system using boost SEPIC converter with battery storage system," in Proc. of Students Conf. on Engineering and Systems, , 6 pp., Apr. 2013.
[19] M. Veerachary, "Power tracking for nonlinear PV sources with coupled inductor SEPIC converter," Aerospace and Electronic Systems, IEEE Trans. on, vol. 41, no. 3, pp. 1019-1029, Jul. 2005.
[20] G, Sharp, Sepic Converter Design and Operation, Worcester Polytechnic Institute (WPI), 2014.
