Distributed Photovoltaic/Battery Power Systems with a Three-Portpower Converter Based on Fopid Control Strategy

Abstract

The operation of a three-port power converter using a fractional-order proportional-integral-derivative (FOPID) controller is intended for use in PV and battery systems. These results encourage us to suggest utilizing a single-port power converter to regulate the output of Distributed Power Generation (DPG) systems including PV and battery. The system's power density and reliability both increase as a result of sharing power switches between the full-bridge DC-DC converter and the bidirectional-integrated converter. To ensure power equilibrium among the three ports across various operational scenarios, we outline an approach to managing energy and a control technique centered around FOPID, taking into account the advantages of battery management and Maximum Power Point Tracking (MPPT). To confirm the proper deployment of the MPPT control loop and battery charging/discharging monitoring loop under various circumstances, we simulated the intended DPG system using MATLAB/Simulink.