Publication Details

Abstract

The accelerating global shift toward renewable energy has created an urgent demand for power converters capable of handling its low, unstable, and highly variable DC outputs. The ultra–high gain DC–DC converters address this limitation by providing large step-up ratios with improved efficiency and reduced stress. This project explores the DC-DC converter that uses a quadratic gain structure with a coupled inductor in order to achieve high voltage gain at moderate duty cycles. It also ensures continuous input current, low device stress, soft switching, and higher power density compared to the existing DC-DC converters as seen in the literature. Therefore, this project highlights the simulation of an ultra-high-gain DC-DC converter with the aid of the Particle Swarm Optimisation (PSO) algorithm and a pole placement state feedback controller. The performance is analysed in terms of the figures of merits such as steady state voltage regulation and settling time. The simulation of this ultra-high-gain DC-DC converter is fulfilled in MATLAB/SIMULINK software.