Voltage Stabilization Control with Hybrid Renewable Power Sources in DC Microgrid

Abstract

With the increased penetration of electric vehicles (EVs) and modern electronic loads the conventional electrical grid is heavily loaded. To integrate these loads with grid, DC microgrid (DC-μG) provide significant advantages like reduced number of conversion stages and multiple dc voltage levels by virtue of DC-DC converters. Considering the growing need of renewable energy sources and potential advantage of EVs seen as energy storage devices this paper proposes the control strategy for multiple source DC-μG to assist the main grid. A central bidirectional voltage source converter regulates the power flow between the AC and DC sub-grids. The ultimate aim of the control strategy is to maintain a stable common DC bus voltage. The controller performance is validated through MATLAB simulation. © 2023 IEEE.