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August 19, 2026Scientific ReportsOpen Access

A new step-up quadratic DC/DC converter based on coupled-inductor

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Authors

SHSara Hasanpour

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Overview

Experimental study demonstrates a high-gain quadratic DC-DC converter achieving 20 V to 400 V step-up, indicating enhanced efficiency and reduced switch stress for renewable energy systems.

Key Points

  • To develop and evaluate a high-gain step-up DC-DC converter with reduced component count and lowered switch voltage stress for renewable energy applications.
  • Embedded a three-winding coupled-inductor (TWCI) and a switched-capacitor network into a conventional quadratic boost converter topology.
  • Integrated two passive regenerative clamp circuits with synchronized switching to reduce active switch voltage stress and enable current sharing.
  • Constructed and tested a 200 W laboratory prototype converting a 20 V input to a 400 V output.
  • Achieved a 20-fold ultra-high voltage step-up (20 V to 400 V) using a low TWCI turns ratio via a trans-inverse configuration.
  • Maintained continuous low-ripple input current and common grounding while minimizing power losses through passive clamping and load sharing.

Cite This Study

Sara Hasanpour (2026) studied this question.

synapsesocial.com/papers/6a85632803308d306e2d62f6https://doi.org/10.1038/s41598-026-65276-z
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