Hybrid piezoelectric and electromagnetic receiver for low frequency electrodynamic wireless transmission
Récepteur hybride piézoélectrique et électromagnétique pour la transmission sans fil électrodynamique à basse fréquence
Résumé
This paper reports a linear model of a near-field electrodynamic wireless power transmission system that includes both an electromagnetic and a piezoelectric transducer in the power receiver. The proposed model is experimentally validated in the case of weak electromechanical couplings. The physical parameters of the model are first identified using impedance analysis performed on each transducer. The system generates 22 µW (1.3% efficiency) at 38.5 Hz with a volume of 23 cm 3. I.
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