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Analysis and Design of a New Ultra-Step-Up DC–DC Converter with Reduced Voltage Stress for Renewable Energy Systems Applications

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

Abstract

A new non-isolated high-gain high-efficiency interleaved DC–DC converter with low voltage stress is introduced in this paper, which is suitable for renewable energy sources applications. It utilizes coupled inductor (CI) and built-in transformer (BIT) to achieve an ultra-step-up voltage ratio. In such a case, a more flexible voltage gain is provided through the turn ratios of CI and BIT. Through the interleaving effect, the input current ripple is minimized and also equal current sharing performance is realized between the interleaved phases. Moreover, the implementation of low voltage MOSFETs is facilitated by reducing the voltage stress across which consequently decreases the conduction losses. Meanwhile, the leakage inductances of the magnetic devices provide zero current switching of the semiconductors, and reverse recovery losses of diodes are diminished, as well. Finally, a 1 kW 20–400 V prototype is fabricated to examine the conducted steady-state analysis and to demonstrate the merits of the proposed converter.

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The authors did not receive support from any organization for the submitted work.

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Authors and Affiliations

  1. Department of Electrical Engineering, Ramsar Branch, Islamic Azad University, Ramsar, Iran

    S. Hasanpour

  2. Department of Electrical Engineering, Sari Branch, Islamic Azad University, Sari, Iran

    T. Nouri

  3. Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

    M. Shaneh

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  1. S. Hasanpour
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  2. T. Nouri
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  3. M. Shaneh
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Correspondence to S. Hasanpour.

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Hasanpour, S., Nouri, T. & Shaneh, M. Analysis and Design of a New Ultra-Step-Up DC–DC Converter with Reduced Voltage Stress for Renewable Energy Systems Applications. Iran J Sci Technol Trans Electr Eng (2023). https://doi.org/10.1007/s40998-023-00681-y

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  • DOI: https://doi.org/10.1007/s40998-023-00681-y

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