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A Two Stage Coupled Inductor Based Cascaded Dc-Dc Converter with A High Voltage Gain
Subject area: Science,Engineering and Technology · Area of research: POWER ELECTRONICS
Abstract
In this paper, a new high step-up cascaded DC-DC converter is presented. The first stage of the proposed converter is a buck-boost converter with modified converter topology. The second stage is a boost converter with coupled inductor and voltage multiplier cells. The literature has reported on various voltage-boosting techniques, in which fundamental energy storing elements (inductors and capacitors) and/or transformers in conjunction with switch and diode(s) are utilized in the circuit. These techniques include switched capacitor (charge pump), voltage multiplier, switched inductor/voltage lift, magnetic coupling, and multistage/-level, and each has its own merits and demerits depending on application, in terms of cost, complexity, power density, reliability, and efficiency. The energy stored in the leakage inductor of the coupled inductor is recycled by a passive voltage clamp to a capacitor thereby improving the efficiency. Besides, the blocking voltage across the MOSFET switch is reduced in the proposed topology due to voltage clamp circuit. Finally, broad applications of dc?dc converters are presented and summarized with comparative study of different voltage-boosting techniques. The steady-state analysis of the proposed converter is presented in the paper.
Keywords
Buck-boost converter, cascaded converter, coupled inductor, high step-up DC-DC converter, voltage clamp circuit.
References
[1] A.Ajami, H. Ardi, and A. Farakhor, “A novel high step-up DC/DC converter based on integrating coupled inductor and switched- capacitor techniques for renewable energy applications,” IEEE Trans. Power Electron., vol. 30, no. 8, pp. 4255–4263, Aug. 2015.
[2] R. Guo, Z. Liang, and A. Q. Huang, “A family of Multi-modes charge pump-based DC-DC converter with high efficiency over wide input and output range,” IEEE Trans. Power Electron., vol. 27, no. 11, pp. 4788–4798, Nov. 2012.
[3] B. W. Williams, “DC-to-DC converters with continuous input and output power,” IEEE Trans. Power Electron., vol. 28, no. 5, pp. 2307–2316, May 2013.
[4] J. Ai, and M. Lin, “Ultra-Large Gain Step-Up Coupled Inductor DC-DC Converter with Asymmetric Voltage Multiplier Network for a Sustainable Energy System,” IEEE Trans. Power Electron., in press, 2016.
[5] N. Vosoughi, A.E. Khosroshahi, and S.H. Hosseini, “A Switchedcapacitor DC-DC Converter with Voltage Regulation for Photovoltaic Applications,” The 9th Inter. Conf. on Electrical and Electron Eng., 2015.
How to cite this paper
@article{1702641,
author = {Soundaryagurulakshmi R V},
title = {A Two Stage Coupled Inductor Based Cascaded Dc-Dc Converter with A High Voltage Gain},
journal = {Iconic Research And Engineering Journals},
year = {2021},
volume = {4},
number = {10},
pages = {8-11},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1702641.pdf},
abstract = {In this paper, a new high step-up cascaded DC-DC converter is presented. The first stage of the proposed converter is a buck-boost converter with modified converter topology. The second stage is a boost converter with coupled inductor and voltage multiplier cells. The literature has reported on various voltage-boosting techniques, in which fundamental energy storing elements (inductors and capacitors) and/or transformers in conjunction with switch and diode(s) are utilized in the circuit. These techniques include switched capacitor (charge pump), voltage multiplier, switched inductor/voltage lift, magnetic coupling, and multistage/-level, and each has its own merits and demerits depending on application, in terms of cost, complexity, power density, reliability, and efficiency. The energy stored in the leakage inductor of the coupled inductor is recycled by a passive voltage clamp to a capacitor thereby improving the efficiency. Besides, the blocking voltage across the MOSFET switch is reduced in the proposed topology due to voltage clamp circuit. Finally, broad applications of dc?dc converters are presented and summarized with comparative study of different voltage-boosting techniques. The steady-state analysis of the proposed converter is presented in the paper. },
keywords = {Buck-boost converter, cascaded converter, coupled inductor, high step-up DC-DC converter, voltage clamp circuit.},
month = {April},
}