Solar PV and BESS based Home Energy System

Abstract

Penetration of residential distributed energy resources (DER), especially renewable energy resources, is increasing rapidly all over the world due to the electricity cost savings to customers and less environmental impact. This paper performs different scenario - case study to show how DER could strengthen the grid and help mitigate grid disturbances, as well as function as the grid resource for faster system response and recovery. A simple model built using Matlab/Simulink, highlights the automated control across the system utilizing voltage control. The model consists of a PV system integrated to the grid through a boost converter based Maximum Power Point Tracking (MPPT), and a Battery Energy Storage System (BESS) integrated through a bi-directional DC/DC Converter. Comparison of different converter types is conducted, and calculation of system configuration parameters is done to optimize the model. Different PV outputs influenced by environmental parameters and different load demand are also simulated under both grid-connected and islanded operation mode proving the system is properly designed and configured. Levelized Cost of Electricity (LCOE) and Levelized Cost of Delivery (LCOD) are then estimated on the model, proving the promising future of microgrid implementation based on the current market, especially in rural areas.