A Charger for AC to DC and DC to AC Conversion for Electric Vehicle

Technologies in the automotive sector is drastically changing day by day. The internal combustion engine which was the heart of the automobile industry for almost more than a century is now getting obsolete. As the world around is more concern towards the environment and thinking various methods by which the pollution can be reduced, the future of the internal combustion engine which is a major source of polluting the environment paints a grim picture. The alternative the mankind is looking for the internal combustion engine is the electric motor vehicles that are drastically hiking across the universe on account of immense environmental issues and energy shortage. Charging of electric vehicle is a crucial part and might thus become a burden to the current energy sources. In order to avoid such shortage of energy a new comprehensive design of a battery charger is introduced for electric vehicles. The proposed system can be operated in two modes that are exchange of energy from Grid to Vehicle and exchange of energy from Vehicle to Grid according to the user requirement. In this paper we propose a battery charger for the Electric Vehicle (EV) which is controllable and bidirectional in manner. TMS320f28335 DSP processor is used as a control unit. The main functions of the processor are controlling the phase, amplitude and frequency of the signal that is given to the grid and generates PWM signals for IGBT. It also checks whether the battery is having a particular threshold value or not and provides authorization while operating in Vehicle to Grid mode. The performance of the proposed system is evaluated on Matlab/Simulink and results are depicted in the simulated section.