Experimental verification of wireless charging system for vehicle application using EDLCs

This paper discusses an vehicle application which uses electric double layer capacitors (EDLCs) as a power source. EDLCs are charged through a rapid charger by using wireless power transmission. In this paper, as vehicle application, the electric assisted bicycle is considered. First, the antenna for the wireless power transmission and the charger are introduced. Next, this paper compares the volume and the power loss of the three kinds of DC-DC converters which are a buck-type, a boost-type and a buck-boost type for the charging and discharging of EDLCs. As a result, such as an electric assisted bicycle for small-capacity system, the boost-type is small. On the other hand, such as electric vehicles for large-capacity system, the buck-type is small. Finally, the proposed system is experimentally verified as a prototype. As a result, the proposed system can shorten to 1/4 the charging time of the conventional system.