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High Step-Up Non-isolated DC–DC Converter Using Diode–Capacitor Cells

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Iranian Journal of Science and Technology, Transactions of Electrical Engineering Aims and scope Submit manuscript

Abstract

The objective of this paper is to propose a new topology for high step-up multiport DC–DC converter. The proposed converter has two-input single-output ports, and its voltage gain is significantly increased using diode–capacitor cells, which are modified Dickson’s charge pump. Moreover, the voltage stress on the switching devices is reduced. Thus, this converter is very useful for high-power applications. The voltage gain of the proposed converter can be further increased by increasing the number of diode–capacitor cells. The main advantage of this expandable structure is the use of only two inductors in its structure, which considerably decreases the losses and even the size of the converter. The conversion ratios, voltage stress on switches and diodes, as well as the average current of switches and diodes, are formulated, and the theoretical analysis of the converter is proposed. In order to experimentally validate the performance of the proposed converter and theoretical calculations, a converter with the first input voltage source of 10 V and the second input voltage source of 15 V is designed and the output voltage level of 312.5 V is measured, which confirm the simulation results. Moreover, the maximum efficiency occurred at 100 W and full load efficiency is 93.5%, which are all noticeable achievements.

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Authors and Affiliations

  1. Department of Electrical Engineering, Islamic Azad University, South-Tehran Branch, Tehran, Iran

    Sepideh Bahravar, Karim Abbaszadeh & Javad Olamaei

Authors
  1. Sepideh Bahravar
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  2. Karim Abbaszadeh
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  3. Javad Olamaei
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Correspondence to Karim Abbaszadeh.

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Bahravar, S., Abbaszadeh, K. & Olamaei, J. High Step-Up Non-isolated DC–DC Converter Using Diode–Capacitor Cells. Iran J Sci Technol Trans Electr Eng 45, 81–96 (2021). https://doi.org/10.1007/s40998-020-00349-x

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  • DOI: https://doi.org/10.1007/s40998-020-00349-x

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