Call for Paper - January 2023 Edition
IJCA solicits original research papers for the January 2023 Edition. Last date of manuscript submission is December 20, 2022. Read More

Design of Soft Switching Sepic Converter Fed DC Drive Applications

International Journal of Computer Applications
© 2014 by IJCA Journal
Volume 96 - Number 3
Year of Publication: 2014
B. Mohamed Faizal

Mohamed B Faizal. Article: Design of Soft Switching Sepic Converter Fed DC Drive Applications. International Journal of Computer Applications 96(3):24-30, June 2014. Full text available. BibTeX

	author = {B. Mohamed Faizal},
	title = {Article: Design of Soft Switching Sepic Converter Fed DC Drive Applications},
	journal = {International Journal of Computer Applications},
	year = {2014},
	volume = {96},
	number = {3},
	pages = {24-30},
	month = {June},
	note = {Full text available}


High efficiency DC-DC converters with high-voltage gain have been researched due to increasing demands. A soft-switching single-ended primary inductor converter (SEPIC) is presented in this work. An auxiliary switch and a clamp capacitor are presented in this project. A coupled inductor and an auxiliary inductor are utilized to obtain ripple-free input current and achieve zero voltage-switching (ZVS) operation of the main and auxiliary switches. The voltage multiplier technique and active clamp technique are applied to the conventional SEPIC converter to increase the voltage gain, reduce the voltage stresses of the power switches and diode. Moreover, by utilizing the resonance between the resonant inductor and the capacitor in the voltage multiplier circuit, the zero-current-switching (ZVS) operation of the output diode is achieved and its reverse-recovery loss is significantly reduced. The converter achieves high efficiency due to soft switching commutation of the power semiconductor device. The circuit is simulated using MATLAB Simulink and output result is verified.


  • P. F. Melo, R. Gules, E. F. R. Romaneli, and R. C. Annunziato, "A modified SEPIC converter for high-power-factor rectifier and universal input voltage applications," IEEE Trans. Power Electron. , vol. 25, no. 2, pp. 310–321, Feb. 2010.
  • E. H. Ismail, "Bridgeless SEPIC rectifier with unity power factor and reduced conduction losses," IEEE Trans. Ind. Electron. , vol. 56, no. 4, pp. 1147–1157, Apr. 2009.
  • D. S. L. Simonetti, J. Sebastian, and J. Uceda, "The discontinuous conduc- tion mode sepic and cuk power factor preregulators: Analysis and design," IEEE Trans. Ind. Electron. , vol. 44, no. 5, pp. 630–637, Oct. 1997.
  • J. -M. Kwon, W. -Y. Choi, J. -J. Lee, E. -H. Kim, and B. -H. Kwon, "Continuous-conduction-mode SEPIC converter with low reverse- recovery loss for power factor correction," IET Proc. Electr. Power Appl. , vol. 153, no. 5, pp. 673–681, Sept. 2006.
  • J. C. W. Lam and P. K. Jain, "A high-power-factor single-stage single- switch electronic ballast for compact fluorescent lamps," IEEE Trans. Power Electron. , vol. 25, no. 8, pp. 2045–2058, Aug. 2010.
  • S. J. Chiang, H. -J. Shieh, and M. -C. Chen, "Modeling and control of PV charger system with SEPIC converter," IEEE Trans. Ind. Electron. , vol. 56, no. 11, pp. 4344–4353, Nov. 2009.
  • B. -R. Lin and C. -L. Huang, "Analysis and implementation of an integrated sepic-forward converter for photovoltaic-based light emitting diode light- ing," IET Power Electron. , vol. 2, no. 6, pp. 635–645, Dec. 2009.
  • Z. Ye, F. Greenfeld, and Z. Liang, "Design considerations of a high power factor SEPIC converter for high brightness white LED lighting applications," in Proc. IEEE Power Electron. Spec. Conf. (PESC), 2008, pp. 2657–2663.
  • Z. Ye, F. Greenfeld, and Z. Liang, "Single-stage offline SEPIC converter with power factor correction to drive high brightness LEDs," in Proc. IEEE Appl. Power Electron. Conf. (APEC), 2009, pp. 546–553.
  • M. Ali, M. Orabi, M. E. Ahmed, and A. El-Aroudi, "Design considera- tion of modified SEPIC converter for LED lamp driver," in Proc. IEEE Int. Symp. Power Electron. Distributed Generation Syst. , Jun. 2010, pp. 394–399.
  • H. -J. Chiu, Y. -K. Lo, J. -T. Chen, S. -J. Cheng, C. -Y. Lin, and S. -C. Mou, "A high-efficiency dimmable LED driver for low-power lighting appli- cations," IEEE Trans. Ind. Electron. , vol. 57, no. 2, pp. 735–743, Feb.