Series-series compensated wireless power transfer at two different resonant frequencies

Recently, resonance phenomenon in wireless power transfer (WPT) is widely used to deliver power to a load over relatively large air gap via magnetic coupling. Since many reactive components in WPT system are contributed to the resonance phenomenon, there are many resonant frequencies. Theses resonant frequencies have different and distinguishing features. For this reason, the analysis of the resonant tank at various resonant frequencies is required to understand WPT system more easily. Therefore, in this paper, three resonant frequencies in series-series compensated WPT (SS-WPT) system are defined. And then, this paper is aiming to present the features of SS-WPT system in the major two of the three resonant frequencies. The analysis is supported with experimental results.