| Title |
Efficiency Analysis of Magnetic Resonance Wireless Power Transmission using Superconductor Coil According to the Changing Position of Transmission and Receiving Coils |
| Authors |
강민상(Kang, Min-Sang) ; 최효상(Choi, Hyo-Sang) ; 정인성(Jeong, In-Sung) |
| DOI |
https://doi.org/10.5370/KIEE.2014.63.6.776 |
| Keywords |
Superconductor ; Wireless power transmission ; Magnetic resonance ; Normal conductor ; Spiral manner |
| Abstract |
In this paper, we analyzed the efficiency of magnetic resonance wireless power transmission (WPT) using superconductor coil according to the changing position of transmission and receiving coils. We implemented a WPT system using a magnetic resonance at a frequency of 63.1 kHz. Transmission and receiving coils using superconductor coil were wound on a spiral manner of diameter 100mm. For comparison, transmission and receiving coils using normal conductor coil were designed under the same condition. At a distance of 50mm, we measured efficiency when transmission-receiving coils were matched 25%, 50%, 75% and 100%. When a superconductor coil was applied to the transmission and receiving units, efficiency of WPT was very high. In addition, in the case of the superconducting transmission-receiving coils, when coils matched 100% the efficiency was 30% and matched 25% the efficiency was 8%. |