Design of a High Step-up DC-DC Power Converter with Voltage Multiplier Cells and Reduced Losses on Semiconductors for Photovoltaic Systems

TL;DR

This paper introduces a high step-up DC-DC converter with voltage multiplier cells for photovoltaic systems, achieving high voltage gain, reduced semiconductor losses, and continuous input current, validated through simulation and hardware testing.

Contribution

The paper presents a novel isolated high step-up converter with voltage multiplier cells that reduces switch stress and losses, and ensures continuous input current for photovoltaic applications.

Findings

Achieved high voltage gain from 30V to 480V

Reduced semiconductor switch stress and losses

Validated through simulation and a 360W prototype

Abstract

A high step up dc dc converter based on an isolated dc dc converter with voltage multiplier cells for photovoltaic systems is essentially introduced in this paper. The proposed converter can provide a high step up voltage gain. The switch voltage stress and losses on semiconductors are significantly reduced through this work. Furthermore, the proposed converter can reliably offer and provide continuous input current which can be basically used for integrating photovoltaic systems to convert 30 V to 480 V dc bus. The ripple on the input current is minimized due to the isolated converter, and the proposed converter is fed by a single input voltage. The operation modes and the characteristics of the aforementioned converter are thoroughly analyzed. The components selection, simulation results and experiment results are mainly verified by using MATALB Simulink. Consequently, a 360 W hardware prototype is implemented to validate the design and the theory.