This article introduces a new quadratic high step-up DC–DC converter designed for renewable energy applications. The proposed converter combines a conventional boost topology with a two-winding coupled inductor (CI) to obtain a high voltage conversion ratio. The voltage gain is determined by both the duty ratio and the coupled-inductor turns ratio; however, the duty ratio serves as the primary control variable, whereas the turns ratio is selected as a design parameter according to the required voltage-conversion ratio. The proposed topology provides several important advantages, including high voltage gain, reduced voltage stress on the power switch, and a common ground between the input and output terminals, which simplifies system integration. A comparative evaluation with existing high-gain converter topologies confirms the improved voltage conversion performance and overall operating characteristics of the proposed design. The performance of the proposed converter is evaluated through analytical analysis and PSCAD/EMTDC based simulations at a switching frequency of 50 kHz, boosting an input voltage of 20 V to a regulated output voltage of 280 V.
- Open Access
- Article
A New Quadratic High Step-Up DC–DC Converter with Single Two-Winding Coupled-Inductor for Photovoltaic Systems Application
- Ali Taghipour Jamshidi,
- Pedram Panahpourian,
- Ebrahim Babaei *,
- Mehran Sabahi,
- Seyed Hossein Hosseini
Author Information
Received: 09 Aug 2026 | Revised: 10 Oct 2026 | Accepted: 12 Oct 2026 | Published: 16 Oct 2026
Abstract
Keywords
quadratic high step-up DC–DC converter | single switch | photovoltaic systems | coupled inductor | common ground
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