Power flow control of solar PV based islanded low voltage DC microgrid with battery management system

The use of low voltage DC microgrids is a promising concept that makes improvements in power quality and reliability to end users through different control techniques. A coordinated control strategy is addressed within DC microgrid for proper power management between sources and loads and regulation of DC bus voltage. For this; different modes of operation are performed based on state of charge of battery and DC bus voltage. Droop control is an effective solution for power sharing between solar PV; battery and loads. A separate control strategy has been developed for battery charging and discharging. MATLAB/SIMULINK simulation results are presented to demonstrate the effectiveness of the proposed power control strategy with battery management system during various operating conditions.