Controller Design and Analysis of Standalone PV System for DC Microgrid Applications with Combined MPPT and DPC Strategy

This paper describes photo-voltaic (PV) and energy storage system for offgrid application. Power from energy source and storage is controlled through DC-DC converters. The system controller is designed to operate in well known maximum power point tracking (MPPT) as well as in desired power control (DPC) with prevailing irradiance, load and battery state of charge (SOC). This prevents battery overcharging and deep discharging, enhancing its life and efficiency. The designed control strategy eliminates the use of complex dump loads during high solar ir-radiance conditions and low load requirements. An experimental 100W system is used to test the effectiveness of controller, and the same system is simulated in MATLAB/Simulink for different irradiance.