Wireless resonance-coupled transfer of electric energy

The wireless electrical energy or power transmission link based on coupled resonant circuits has a first resonant circuit which is formed with first capacitor and a first inductor. A second resonant circuit is formed from a second capacitor and a second inductor. The control circuit is arranged for controlling the resonance frequency of the resonant circuits to a predetermined value at which power is transmitted and power is transmitted as long as the power transmission link does not operate at an overcritical coupling condition. An independent claim is also included for a method for controlling the power flow over an electrical wireless power transmission link based on a coupled resonant network.