Design and simulation of DC-DC converters for Photovoltaic system based on MATLAB

摘要

The use of Photovoltaic (PV) systems is increasing rapidly due to its various advantages. The performance of PV system depends upon in plane radiation and temperature. A PV module is designed in MATLAB-SIMULINK using the S-function builder and controlled current source. The proposed PV module enables us to obtain its P-V and I-V characteristics at different temperature and radiations. The main disadvantage of the PV system is its variable voltage. To obtain the stable voltage, the different DC-DC converters are connected with the PV modules. An intermediate dc-dc converter can increase efficiency of the system by providing impedance match between PV system and load. This paper presents the design and simulation of DC-DC converters. In this paper, Boost converter, cascaded Buck Boost, Cuk converter and Single ended primary inductance converter (SEPIC) are modeled in MATLAB and their results are compared.