Modeling a Grid-Connected PV/Battery Microgrid System with MPPT Controller

TL;DR

This paper models and analyzes a grid-connected PV/battery microgrid with MPPT control, demonstrating improved stability and performance under different load conditions through MATLAB simulations.

Contribution

It introduces a detailed dynamic model of a PV/battery microgrid with MPPT control, validated with real data and simulation results.

Findings

System effectively stabilizes PV power fluctuations.

Battery sizing provides smoothing services.

Model performs well under varying load conditions.

Abstract

This paper focuses on performance analyzing and dynamic modeling of the current grid-tied fixed array 6.84kW solar photovoltaic system located at Florida Atlantic University (FAU). A battery energy storage system is designed and applied to improve the systems stability and reliability. An overview of the entire system and its PV module are presented. In sequel, the corresponding I-V and P-V curves are obtained using MATLAB-Simulink package. Actual data was collected and utilized for the modeling and simulation of the system. In addition, a grid- connected PV/Battery system with Maximum Power Point Tracking (MPPT) controller is modeled to analyze the system performance that has been evaluated under two different test conditions: (1) PV power production is higher than the load demand (2) PV generated power is less than required load. A battery system has also been sized to provide smoothing services to this array. The simulation results show the effective of the proposed method. This system can be implemented in developing countries with similar weather conditions to Florida.