Analysis And Control Of Power Flow Controller In Standalone Photovoltaic Using Fuzzy Logic Controller

Abstract

The intermittent generation nature of renewable energy sources demands all renewable energy systems should be integrated with energy storage elements. This situation has given rise to development in three-port converter which ensure uninterrupted power supply. The three-port converter interfaces the PV panel with the bidirectional battery and load, which isolated by a transformer. This paper presents fuzzy logic controller based Full-bridge three-port converter, which can integrate PV panel, battery and an output port to the load. The analyzed three-port converter is derive from full bridge converter, which was splited into two different cells; each cell is interfacing the input source and each cell is composed of two switches. The fuzzy logic controller was used with seven membership functions. The complete three-port converter was studied with the design specifications and principles of operation. Furthermore, the simulation results of seven membership functions based fuzzy logic controllers are analyzed along with the results of another fuzzy logic controller, which is based on three membership functions. In order to verify the efficacy of the converter, a model was built and tested in Simulink (MATLAB).