Article
Improvement of Power Quality in a PV Based EV Charging Station connected with Three Phase Grid
In this article, we take a look at an electric vehicle (EV) charging station that uses solar photovoltaic (PV) arrays to improve power quality and can work either independently or in conjunction with the grid. When operating independently, the station uses the electricity from the PV panels to immediately charge the electric vehicle's battery. Connected to the utility grid, it may improve the quality of grid electricity via reactive power compensation while also supplying excess energy back to the system. In addition to controlling the charging and discharging of electric vehicle batteries, the suggested charging station can also do the following: (i) compensate for harmonic currents, (ii) charge and discharge electric vehicles at the same time with harmonic compensation, and (iv) discharge electric vehicles at the same time with harmonic compensation. Even when grid voltages are uneven, the management method keeps overall harmonic distortion of grid currents within the 5% level suggested by IEEE-519, ensuring dependable operation. The system is mostly built to work with the grid, but when grid synchronisation is lost, it immediately shifts to independent mode so the PV array can keep charging the electric vehicle battery. When the grid becomes available, the system may be securely connected with the help of a specific synchronisation controller.
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