Simulation of Vehicle to Grid (V2G) using MATLAB Simulink

In this simulation, the energy stored in the battery of an electric vehicle is transferred to the grid through a three-phase inverter. The system is designed to operate at a voltage of 400 Vrms. First, the grid voltage’s frequency and phase angle are measured using a Phase-Locked Loop (PLL). The actual direct-axis (d-axis) and quadrature-axis (q-axis) currents are then compared with their respective reference values. PI controllers are used to generate the reference voltages for the d-axis and q-axis. These voltages, Vd and Vq, are subsequently transformed into three-phase voltages (Vabc). Finally, the DC voltage from the battery is converted into AC by the three-phase inverter, controlled by the pulse signals generated through a three-phase PWM generator.