ZVT High Step-Up Boost Converter With Wide Input Voltage and Wide Output Power for Renewable Energy Applications

Ramin Rahimzadeh Khorasani, Hamed Moradmand Jazi, Arash Khoshkbar-Sadigh, Nilanjan Ray Chaudhuri, Mahdi Shaneh, Najmehossadat Nourieh, Ehsan Adib, Patrick Wheeler

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In this article, a high-efficiency, high step-up dc-dc converter is introduced by utilizing a new soft-switching circuit based on the zero-voltage transition (ZVT) technique. Soft-switching performance is independent of the output load and input voltage. The simple auxiliary circuit benefits from a low number of components. The resonant circuit comprises merely one switch and one small capacitor, and in comparison to the existing ZVT high step-up converters, no extra auxiliary diode and resonant inductor are used to provide soft switching. The proposed auxiliary circuit can be applied to coupled inductor (CI)-based step-up topologies, because of exploiting the leakage inductance of the CI cell in the resonant network. Providing soft-switching performance for all the semiconductor elements alleviates the reverse recovery and switching losses, which considerably enhances the efficiency. The proposed topology is a competitive structure in terms of efficiency, voltage gain ratio, and the number of components due to the mentioned features. The theoretical results are validated on a 200-W laboratory prototype with a 400-V output voltage.

Original languageEnglish (US)
Pages (from-to)6057-6069
Number of pages13
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Issue number5
StatePublished - Oct 1 2022

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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