Design and Implementation of Grid Connected Solar/Wind/Diesel Generator Powered Charging Station for Electric Vehicles with Vehicle to Grid Technology Using IoT

摘要

In this paper grid connected Solar/Wind/Diesel generator powered Electric Vehicle(EV) charging station with Vehicle to Grid (V2G) is designed. Solar/Wind/Diesel generator poweredcharging station consists of a Photovoltaic array and Wind Energy system, threeunidirectional converters, Maximum Power Point Tracker(MPPT), Raspberry Pi controller, 20Bidirectional DC/DC converter associated with 20 Electric Vehicle charging station. Three phasebidirectional DC/AC (Direct Current/Alternating Current) converter is connected to the grid. Themain contribution of this work is to design EV charging station, in addition to charging priority setwith respect to State of Charge (SOC) level of EV’s battery. If the availability of Solar/Windpower is sufficient to charge the connected EV’s, then they are charged with Solar/Wind. If thedemand is increased, power is extracted from the Diesel at peak load time and from the grid atbase load time. Once the vehicle is plugged in charging station the customer can either buy or sellthe power. If buy option is opted for, the priority of charging EVs battery is set in the ascendingorder of the battery’s SOC level. As a result, Energy Management is effectively done and everycustomer can be satisfied. If sell option is opted for, the power is extracted from the vehicles to thegrid, based on customers willingness of selling power. All control functions are done by RaspberryPi controller. The whole process is monitored and controlled by using Internet of Things(IoT). Simulation is done through the MATLAB /SIMULINK and thus the results give good performanceof the proposed method.