An Improved Quadratic Boost Converter Suitable for Photovoltaic Applications

Mahdiani, Mehran; Afjei, Ebrahim

doi:10.48308/ijrtei.2026.241596.1103

An Improved Quadratic Boost Converter Suitable for Photovoltaic Applications

Document Type : Research Article

Authors

Mehran Mahdiani

Ebrahim Afjei

Faculty of electrical engineering, Shahid Beheshti University, Tehran, Iran

10.48308/ijrtei.2026.241596.1103

Abstract

Non-isolated DC–DC converters offer an effective solution to the limitations of isolated counterparts. This study proposes a new non-isolated DC–DC converter that integrates a conventional boost converter with a diode–capacitor voltage multiplier cell (VMC). The higher voltage gain is achieved without increasing the number of inductors, which remains the same as in Cuk, SEPIC, and Zeta converters. Similar to boost, Cuk, and SEPIC converters, the proposed topology ensures continuous input current and subjects the input filter capacitor to low current stress. It also provides a common ground between the load and source while maintaining positive output polarity. In addition to delivering a high voltage gain, the converter achieves low and acceptable voltage/current stresses on the semiconductors. Both ideal and non-ideal operating modes are analyzed. Finally, experimental results are presented to validate the theoretical analysis and relation, with a 200 W prototype designed for 40 V input and 400 V output.

Keywords

Boost converter

DC-DC converter

high-gain converter

Non-isolated topology

single-switch

Subjects