V2G and Wireless V2G concepts: State of the Art and Current Challenges

The electrical vehicle (EV) has revolutionized the transportation sector as it uses electrochemical batteries as power sources instead of fossil fuel based gasoline, which helps reduce greenhouse gas emissions. Due to technological advances in electronics and bidirectional power inverters, EV is no longer viewed as just transportation tools, but in addition, could serve as electric storage units for the grid by supplying ancillary services. The concept of vehicle to grid (V2G) no longer a fiction, but rather a reality. Numerous scientific papers and research activities arc addressing the V2G via plug-in cable energy transfer. However, the tedious and inconvenient aspects of cable based power transfer hinder some users and may hinder the development of the EVs, thus wireless charging is seen as a key enabling technology to increase the adoption of electric vehicles. This paper outlines the state of the arte in the wireless V2G concept, presenting its potential convenient electricity markets and the existing bidirectional wireless power transfer technology for EVs. Furthermore, it presents an outlook on some challenges to overcome for high efficiency, and faster deployment of this technology.