Power Management in DC Microgrid Based on Distributed Energy Sources’ Available Virtual Generation

Abstract

A power algorithm strategy is presented along with a DC microgrid model with Distributed Energy Resources (DERs) with PV source, Wind source and Energy Storage System (ESS). By utilizing the source power to its maximum capabilities, this power flow approach aids in overcoming power sharing among DERs and DC bus voltage regulation. The power algorithm uses virtual generation, which is defined by the extra power of the source beyond the average power rating. This virtual generation is used to generate a reference value. The virtual generation from each source is determined by the power supply available to the source. The proposed control algorithm strategy improves the lifespan of ESS by reducing its charging/ discharging cycles. This also reduces the stress on the interfacing converters and DC bus voltage regulation. The proposed control algorithm and microgrid model are implemented in MATLAB simulation.