Efficiency modeling of high gain DC-DC converter for renewable energy application

Abstract

This paper presents a high efficiency step-up DC-DC converter for Low-DC renewable energy sources. Conventional DC converters can offer limited gain and their efficiency drops as the gain requirement increases. Efficiency modeling of each dc-dc converter accurately predicts the behavior of DC-DC converter. A comparison is made in this paper between a number of high gain DC-DC converter topologies, and it is shown that the proposed converter outperforms other topologies in terms of efficiency and component utilization. Thus, the achieved low cost and high efficiency of the proposed converter make it suitable for low-PV application.