Proposing and Modeling an Ultrahigh Step-Up DC-DC Converter Including Two Stages Boost Converter, Switched Capacitor and Coupled Inductor

Document Type : Power Article

Authors

1 Associate Professor, Department of Electrical Engineering, Kermanshah University of Technology, Kermanshah, Iran

2 MSc, Department of Electrical Engineering, Kermanshah University of Technology, Kermanshah, Iran

Abstract

In this paper, a new ultrahigh step-up converter composed of two stages boost converter, a switched capacitor unit and coupled inductor is proposed. Secondary winding of the coupled inductor has been merged with the switched capacitor and leakage energy of the coupled inductor recycles through the output side. The structure contains two power switches which operate synchronously. The converter is compared from different points of view with the others presented in references. According to the results of the comparison, the converter boosts voltage with higher gain in comparison to the references. In addition, the converter requires smaller inductor in its input side and voltage stress on its semiconductors is low. This paper presents analysis of operation states, design of the inductors and main equations of the converter performance. To validate the analysis, results of simulation in SIMULINK MATLAB and experiments are utilized as the last section of the paper. The prototype is designed for 150W output power to boost input voltage with gain equal to 16.     

Keywords

Main Subjects

References

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Journal of Modeling in Engineering
Volume 22, Issue 77
August 2024
Pages 157-173

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History

  • Receive Date: 17 April 2022
  • Revise Date: 12 February 2023
  • Accept Date: 20 September 2023

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