Greenhouse Gas Emission Evaluation Including Infrastructure for Passenger Electric Vehicles with Dynamic Wireless Power Transfer

The short cruising distance per charge is a major technical challenge associated with electric vehicles (EVs), compared to hybrid and conventional vehicles with internal combustion engines. Dynamic wireless power transfer (DWPT) is a feasible solution to increase the cruising distance of EVs equipped with small capacity batteries. DWPT eliminates the need to use a large capacity batteries in an EV. This makes EVs lighter and thus reduces the energy required for cruising. Notably, the manufacture of large capacity batteries cause large quantity of greenhouse gas (GHG) emissions. Therefore, DWPT can contribute to reducing GHG emissions. This study estimates the GHG emissions of passenger electric vehicles with the DWPT system, including transmitter coils and inverters, and compares their emissions with those of passenger EV equipped with large capacity batteries. The number of DWPT transmitter coils was estimated by simulation using actual driving data on local roads and expressway gradient data. The comparison results show that DWPT system can reduce 28.9% of GHG emission compared to EV with large capacity batteries.