Vu Thai Giang, Vo Thanh Vinh, Nguyen The Vinh



Highly Efficient step-up Boost-Flyback Coupled Magnetic Integrated Converter for Photovoltaic Energy

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This paper presents a new high-efficiency-high-step-up based converter integrating two stype DCDC Boost and Flyback coupled magnetic converter with recovery stage dedicated to smart HVDC distributed architecture in renewable energy production systems. Appropriate duty cycle ratio assumes that the recovery stage work with parallel charge and discharge to achieve high step-up voltage gain. Besides, the voltage stress on the main switch is reduced with a passive clamp circuit and thus, low on-state resistance Rdson of the main switch can be adopted to reduce conduction losses. The circuit is simple to control. As a final point of this research, the simulation and the prototype investigational results are presented to demonstrate the effectiveness of this proposed converter.


DC-DC converters, Boost converter, Flyback converter, High step-up voltage gain, Sustainable energy system


[1] RG Walker and PC Sernia., “Cascaded DC– DC Converter Connection of Photovoltaic Modules,” IEEE Trans. on Power Electron. Vol.8, 4, pp 1130-1139, 2004.

[2] A Shahin et al., “New non-linear control strategy for non-isolated DC/DC converter with high voltage ratio,” Energy Conversion and Management. Vol.51, 1, pp56-63, 2010.

[3] Tseng K.C., Liang T.J., “Novel high-efficiency step-up converter,” Proc. Inst. Elect. Eng. Elect. Power Appl. Vol.151, 2, pp182-190, 2004.

[4] Li W, He X., “Review of nonisolated highstep- up DC/DC converters in photovoltaic gridconnected applications,” IEEE Trans. Ind. Electron. Vol.58, 4, pp1239-1250, 2011.

[5] F.L. Luo, “Switched-capacitorized DC/DC converters” in Proc. IEEE c\Conf. Ind. Electron. Appl. (ICIEA), pp. 1074-1079, 2009.

[6] Q Zhao, FC Lee., “High-Efficiency High Step- Up DC–DC Converters,”. IEEE Trans. Power Electron. Vol.18, 1, 2003.

[7] Nguyen The Vinh et al., “Efficiency of magnetic coupled boost DC-DC converters mainly dedicated to renewable energy systems: Influence of the coupling factor,” International Journal of Circuit Theory and Applications, Vol. 43, pp1042–1062, 2014.

[8] T.V. Nguyen et al., “Self-powered High Efficiency Coupled Inductor Boost Converter for Photovoltaic Energy Conversion,” Energy Procedia, Vol.36, pp650-656, 2013.

[9] Pierre Petit et al., “Basic MOSFET Based vs Couple-Coils Boost Converters for Photovoltaic Generators,” International Journal of Power Electronics and Drive Systems, Vol.4, 1, pp1-11, March 2014.

[10] P. Petit et al., “Rdson behavior in various MOSFET families,” IEEE IndustrialElectronics ISIE, pp353 – 357, 2011.

[11] Adam Kawa et al., “DC-DC boost-flyback converter functioning as input stage for one phase low power grid-connected inverter,” Archives of electrical engineering, Vol. 63, 3, pp393-407, 2014.

Cite this paper

Vu Thai Giang, Vo Thanh Vinh, Nguyen The Vinh. (2018) Highly Efficient step-up Boost-Flyback Coupled Magnetic Integrated Converter for Photovoltaic Energy. International Journal of Circuits and Electronics, 3, 14-18


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