Electrodynamic wireless power transmission (EWPT) is a technique for transmitting power based on an electromechanical system operating at very low frequency. The power receiver converts a time-varying magnetic field first into mechanical power through the motion of a permanent magnet, and then into electrical power through an electromechanical transducer. One issue of electrodynamic WPT receivers is that they can be over-excited and break when subjected to strong magnetic fields. In this paper, we show that the simultaneous use of piezoelectric (PE) and electrodynamic (ED) transducers in a hybrid receiver allows taking advantage of both transductions to recover high levels of energy while limiting wear at higher magnetic field amplitudes.

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