Abstract
The high penetration of inverter-based resources (IBRs) fundamentally changes the dynamic behaviors of the power grid and introduces several technical and operational challenges due to reduction of system inertia. The solar PV integrated electric vehicle (EV) charging system with battery storage can play significant role in providing power system inertia support with grid forming (GFM) mode integration. This paper presents a control strategy for solar PV integrated EV charging system in grid-following (GFL) and GFM inverters to enhance grid support. The EV charging system is connected to the grid through voltage source converter (VSC) with the ability to control GFL and GFM with droop control. The system is capable to control current, voltage, and frequency during the grid disturbances and provide active power and reactive power support and improve the fault ride through capabilities. The proposed EV charging system with controolers are simulated in MATLAB/SimScape environment. The simulation results confirm the effectiveness of the GFM inverter to provide voltage and frequency support under various grid disturbances such as loss of generation, load change and system fault.
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