Co-Ordination of Solar and Wind Power for A Dc Micro Grid

Abstract

This work presents a performance study of a dc microgrid with the integration of wind and solar power when it is used a voltage droop technique to regulated the grid voltage and to control the load sharing between different sources. Compared with the existing droop controls, it is distinguished in that the droop curves are set as a function of the storage state-of-charge (SOC) and can become asymmetric. The adaptation of the slopes ensures that the power output supports the terminal voltage while at the same keeping the SOC within a target range of desired operational reserve. This is shown to maintain the equilibrium of the microgrid’s real-time supply and demand. A small model of a dc microgrid comprising micro sources and loads was implemented in the Simulink/Matlab environment.
Index Terms- Distributed energy resources; droop control; electric vehicle (EV); emission constraint, fast charging; microgrid; multilevel energy storage