Proposal for a new resonance adjustment method in magnetically coupled resonance type wireless power transmission

In a magnetically coupled resonance system which enables intermediate-range power transmission, over 100 high Q is required in the power transmission resonance circuit. In other words, high-precision adjustment of the resonance frequency is necessary. In this paper, we are proposing a pure-electronic resonance frequency adjustment circuit which does not require any complicated controls. With this proposal, the resonant condition can be maintained without using high-precision parts or mechanical adjustment mechanisms.