대용량 무선전력전송 시스템의 전송효율 향상을 위해 삽입된 초전도 공진 코일의 유효성 조사

초록

Recently, the WPT systems have started to be applied to thewireless charging for electrical vehicles (EVs) because of their advantages compared with the wired counterparts, such as convenient, safety and fearless transmission of power. However, it has obstacles to commercialize such as delivery distance and efficiency. To solve the problems, we proposed the technical fusion using high temperature superconducting (HTS) resonance coil in the WPTsystem, it is called as, superconductingwireless power transfer for electric vehicle (SUWPT4EV) system. Since the superconductingwire hasmerits a larger current density and higher Q value than normal conducting wire, the HTS antenna coil enables to deliver a mass amount of electric energy in spite of a small scale antenna, as well as is possible to keep much stronger magnetic fields out in the peripheral regions. In this paper, we presented operating characteristics of the advanced SUWPT4EV system and achieved the improvement and effects of transmission power for inserted resonators within 40 cm distance under radio frequency (RF) power of 370kHz below 600W.