A New Non-Isolated SEPIC Converter with High Gain and High Efficiency for Photovoltaic Application
Subject Areas : electrical and computer engineeringM. Mahmoudi 1 , B. Mirzaeian Dehkordi 2 , M. Niroomand 3 *
1 -
2 -
3 -
Keywords: High step-up DC-DC converter non-isolated SEPIC converter soft switching photovoltaic systems,
Abstract :
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.