Model Validation for an Integrated Solar PV System Laboratory

Abstract

This study focuses on the model validation of an Integrated Solar System Laboratory, employing a comprehensive approach encompassing solar energy sources, batteries, DC/DC boost converters, inverters, and controllers. Mathematical models were meticulously formulated for each key component and implemented using MATLAB/Simulink to create a virtual environment mirroring the laboratory setup. Validation was conducted by accurately representing the designed system parameters in the simulation environment, and then assessing the dynamic responses of the various simulated outputs. The system, designed for diverse photovoltaic solar applications, integrates energy management software. Simulation results showcase the system’s dynamic responses to varying solar irradiance, load patterns, and disturbances, highlighting the efficacy of control algorithms. Key findings indicate that the incremental conductance algorithm effectively optimizes the PV module’s operating point at 7.5 Amps and 90 volts. System stability endures load variations, with the inverter stable at 65%. Additionally, the efficiency of the MPPT technique and converter duty cycle stability are emphasized, along with the battery discharge rate reduction from 67% to approximately 20%. The study validates solar system models, ensuring accurate representation. Robust control algorithms maintain stability amidst load variations, showcasing system efficiency.