Work

An Isolated Ripple‐Free Input Current Resonant Interleaved High Step‐Up DC–DC Converter With Active Voltage Quadrupler for Renewable Energy Systems

Year: 2025

Type: article

Abstract: ABSTRACT This paper presents an isolated resonant high step‐up DC‐DC converter with ripple‐free input current (RFIC). At the low‐voltage side (LVS), an interleaved current‐fed bridge is employed while its switches are operated with a constant duty cycle of 0.5 to achieve RFIC. By active clamp circuits, firstly, the zero voltage switching (ZVS) is ensured for LVS switches; secondly, the stored energy of the leakage inductance is recycled; and thirdly, the voltage stresses across the switches are clamped at the value of 2V IN that is much lower than the high output voltage. The last item enables the implementation of low voltage rated switches with low ON‐state resistance. Through an active voltage quadrupler (AVQ) at the high‐voltage side (HVS) and a transformer, the voltage gain is significantly extended. The switches of the AVQ are responsible for voltage gain regulation and experience half of the output voltage during the OFF‐state. Due to the provided resonance by the auxiliary inductor and multiplier capacitors, the currents of the body diodes of the HVS switches smoothly reach zero, diminishing the reverse recovery losses. The steady‐state analysis of the proposed converter is presented in detail and is validated by the fabrication of a 400W 40–400 V prototype with 96.1% peak efficiency.

Source: IET Renewable Power Generation

DOI: 10.1049/rpg2.70132

Authors: Aziz Tashackori, Tohid Nouri, Mahdi Shaneh, Sara Hasanpour

Institutions: Islamic Azad University Sari Branch, Islamic Azad University of Najafabad

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