A New High Efficiency High Step Up Converter with Coupled Inductor and Switched Capacitor

  • A. Teimori
  • Majid Delshad Islamic Azad University
Keywords: high step-up, soft switching, converter


Incremental converters are nowadays widely used in new energy systems because new energy systems such as photovoltaic, fuel cell, etc have low output voltage and need to be increased to the desired level to connect these systems to the global electricity grid; DC-DC converter converters have played a prominent role, but these converters have to incur significant losses to the system and, on the other hand, operate under the input-to-output variations, so the switchers were considered soft switches. In this study, a non-isolated booster converter with soft switching voltage gain-raising technique was designed. This converter has a switch that is controlled by the Pwm signal. The benefits of this converter include reduced switching losses, simplicity of operation, provision of soft switching and low voltage stress; an active clamp is used to provide soft switching for multiple voltage elements and back cells to maximize gain and input. The converter used an auxiliary branch to increase the gain instead of using the output inductor at the input, and in addition an inductor was used as a filter inductor to reduce the input ripple. This converter has six states. The switches are switched on under zvzcs and switched off under zvc conditions.


[1] Carrasco, J.M., Franquelo, L.G., Bialasiewicz, J.T., Galvan, E., Guisado, R.C.P., Prats, Ma.A.M., Leon, J.I., and Moreno-Alfonso, N., “Power-electronic systems for the grid integration of renewable energy sources: A survey,” IEEE Trans. Ind. Electron, vol.53, no.4, pp.1002-1016, June 2006
[2] Quan, L., and Wolfs, P., “A review of the single phase photovoltaic module integrated converter topologies with three different dc link configurations,” IEEE Trans. Power Electron, vol. 23, pp. 1320-1333, May. 2008.
[3] Bialasiewicz, J.T., “Renewable energy systems with photovoltaic power generators: operation and modeling,” IEEE Trans. Ind. Electron, vol.55, no.7, pp.2752-2758, July 2008
[4] seng, K. C., Huang C. C., and Shih W. Y. “A high step-up converter with a voltage multiplier module for a photovoltaic system,” IEEE Trans. Power Electron., vol. 28, no. 6, pp. 3047–3057, Jun. 2013.
[5] Scarpa V. V. R., Buso S., and Spiazzi G., “Low-complexity MPPT technique exploiting the PV module MPP Locus characterization,” IEEE Trans. Ind. Electron, vol. 56, pp. 1531-1538, May 2009.
[6] Wu, T.-F., and Yu, T.-H., “Unified approach to developing single-stage power converters,” IEEE Trans. Aerosp. Electron. Syst., vol. 34, pp. 211-223, Jan. 1998.
[7] W. Li,W. Li, Y. Deng, and X. He, “Single-stage single-phase high-step-up ZVT boost converter for fuel-cell microgrid system,” IEEE Trans. Power Electron., vol. 25, no. 12, pp. 3057–3065, Dec. 2010
How to Cite
Teimori, A., & Delshad, M. (2019). A New High Efficiency High Step Up Converter with Coupled Inductor and Switched Capacitor. Majlesi Journal of Energy Management, 8(4), 41-45. Retrieved from http://journals.iaumajlesi.ac.ir/em/index/index.php/em/article/view/395