Pv Based Negative Output Superlift Luo Converter for Grid Connected System Using Fuzzy Logic Controller

Photovoltaic based power generation is employed to meet the increasing demand for energy by cleaner means. These PV cells when connected in series should have identical electrical characteristics. For this, converter circuits are employed. A negative output super lift Luo converter (NOSLC) aims at producing negative voltages of comparatively higher range than conventional types. The voltage ranges are obtained at a lower gain value of 0.7. The voltage building can be done using super lift technique where the output voltage rises in geometric progression which results in high voltage gain with reduced ripples. This makes it much suitable for connecting with grid systems. In this paper, fuzzy logic controller is used to obtain better voltage control. The performance of PV based NOSLC with and without fuzzy control have been simulated and compared using MATLAB/SIMULINK.