Fully Soft Switched High Step-Up DC–DC Converter With Three-Winding Coupled Inductors and Continuous Input Current

Mahavarpour F, Madani SM, Adib E, Hahn I (2026)

Publication Type: Journal article

Publication year: 2026

Journal

IEEE Transactions on Industrial Electronics Institute of Electrical and Electronics Engineers (IEEE)

DOI: 10.1109/TIE.2026.3672811

Abstract

In this article, a high step-up three-winding coupled inductor DC–DC converter with the soft switching feature and high efficiency is proposed. The introduced converter provides high voltage gain compared to existing three-winding coupled inductor converters at a reasonable duty cycle. By reducing the turns ratio of the second winding, the voltage gain increases. With an active snubber circuit, the energy of the leakage inductance of the coupled inductor is effectively recycled, thereby limiting the voltage spike across the switch. The main and the auxiliary switches of the proposed converter turn on under zero voltage zero current switching (ZVZCS) and turn off under zero voltage switching (ZVS) conditions. Furthermore, all diodes are operated at ZCS conditions and the reverse recovery losses of diodes are eliminated throughout the entire switching cycle. So, the switching losses are reduced considerably and the converter achieves high efficiency. The converter has full soft switching operation under wide output power applications. In addition, the input current is continuous and a simple control circuit is achieved through a shared ground for the input and output. Featuring a reduced number of components, simple control circuit, and the use of low-cost elements, which leads to lower overall cost, the proposed converter is capable of providing high voltage gain and high efficiency. The proposed converter is analyzed and the theoretical analysis is confirmed through experimental results.

Authors with CRIS profile

Ingo Hahn Professur für Elektrische Antriebe und Maschinen

Involved external institutions

University of Isfahan (UI) / Esfahan University / دانشگاه اصفهان IR Iran, Islamic Republic of (IR) Isfahan University of Technology (IUT) / دانشگاه صنعتی اصفهان IR Iran, Islamic Republic of (IR)

How to cite

APA:

Mahavarpour, F., Madani, S.M., Adib, E., & Hahn, I. (2026). Fully Soft Switched High Step-Up DC–DC Converter With Three-Winding Coupled Inductors and Continuous Input Current. IEEE Transactions on Industrial Electronics. https://doi.org/10.1109/TIE.2026.3672811

MLA:

Mahavarpour, Faezeh, et al. "Fully Soft Switched High Step-Up DC–DC Converter With Three-Winding Coupled Inductors and Continuous Input Current." IEEE Transactions on Industrial Electronics (2026).

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