Work

Dual‐Input High Step‐Up Boost‐SEPIC Converter With Common Ground

Year: 2025

Type: article

Abstract: ABSTRACT This paper proposes a dual‐input single‐output high step‐up converter for use in renewable energy systems. In this converter, the boost and SEPIC structures are integrated. To achieve high voltage gain with a low component count and high power density, the SEPIC second inductor is coupled with the boost inductor. A passive clamp circuit absorbs the leakage inductance energy and recycles it to the load. Thus, the switch voltage stress at the turn‐off moment is limited. The switch voltage stress decreases, and the converter benefits from a common ground between the input and output. Moreover, all the switch sources are connected to the ground. Hence, the converter control circuit is simple. In this converter, all diodes turn off at the ZCS condition, and the reverse recovery problem is eliminated. In this article, the proposed converter operating principles are investigated, and the converter is analyzed. To demonstrate the advantages of the converter, the proposed converter is compared with its counterparts. The experimental results for the 100 W prototype confirm the results of the theoretical analysis.

Source: IET Renewable Power Generation

DOI: 10.1049/rpg2.70115

Authors: Shahriar Khatibi Nejad, Mohammad Rouhollah Yazdani, Majid Delshad, Mahdi Sajadieh

Institution: Islamic Azad University, Isfahan

Language: English

Topic: Advanced DC-DC Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $3,500