10.57647/j.mjee.2025.17076

A New ZVS Multi-input Converter with Modular Auxiliary Circuit and Low Voltage Stress for Renewable Energy Applications

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  • Mehdi Khodadadian Zaghmari1,
  • Majid Delshad*1,
  • Mohammadali Abbasian1,
  • Mohammad Rouhollah Yazdani1,
  1. Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran

Received: 2025-03-12

Revised: 2025-07-02

Accepted: 2025-07-09

Copyright (c) 2025 Mehdi Khodadadian Zaghmari, Majid Delshad, Mohammadali Abbasian, Mohammad Rouhollah Yazdani (Author)

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Khodadadian Zaghmari, M., Delshad, M., Abbasian, M., & Yazdani, M. R. A New ZVS Multi-input Converter with Modular Auxiliary Circuit and Low Voltage Stress for Renewable Energy Applications. Majlesi Journal of Electrical Engineering. https://doi.org/10.57647/j.mjee.2025.17076
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Abstract

Renewable energy sources like wind and solar power experience output voltage fluctuations due to changing weather conditions. To maintain a stable power supply, integrating multiple input sources is essential. A Multi-Input Converter (MIC) provides a more efficient solution by reducing the need for numerous passive components, which in turn minimizes cost, size, and weight compared to separate converters. This study introduces a dual-input boost converter with zero voltage switching (ZVS), utilizing a single auxiliary circuit to enable soft switching for all semiconductor elements. This design not only improves efficiency but also retains the advantages of multi-input converters. Additionally, a voltage multiplier is incorporated to enhance the voltage conversion ratio, achieving higher voltage gains. The theoretical analysis of the proposed converter is validated through experimental results, with efficiency measurements demonstrating a 3% improvement over conventional hard-switching designs.

Keywords

  • DC-DC converter,
  • Coupled inductor,
  • High-gain,
  • Soft-switching
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