Design and Performance Evaluation of DC - DC Step up Sepic Converter for Photovoltaic Based off Grid Application

Abstract

Solar energy resourses is abundantly available but its exploitation through PV system is not economically feasible. In order to optimize the power output, an electronics device should be integrated with solar PV system. A high classical classical single ended primary inductor converter SEPIC converter for renewable energy applications was designed, constructed and experimentally tested. The voltage multiplier cell (consists of two diodes and two capacitors) was incorporated with SEPIC to design a DC – DC boost converter for PV application. The new converter can improve the capacity of 10 V DC input to output 60 V DC, the design circuit will boost input voltage and maintain a constant voltage output. The performance of the proposed topology was authenticated and the result achieved from the implemented prototype are in good agreement with the design strategies. The effects of input parameters such as sun radiation and useful power input on PV system and DC-DC converter outputs were investigated. Results comfirmed that the DC-DC converter was perfectly designed using Multisim software and accurately constructed, when integrated with solar PV system under no load and on load conditions.