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Modeling of hybrid piezoelectrodynamic generators

: Zessin, Henrik; Mateu, Loretor; Spies, Peter

Twiefel, J. ; Leibniz Universität Hannover, Institut für Dynamik und Schwingungen:
10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop 2013. Proceedings : Hannover, July 14th - July 17th, 2013
Garbsen: PZH Verlag, 2013 (Berichte aus dem IDS 2013,5)
ISBN: 978-3-944586-10-6
International Workshop on Piezoelectric Materials and Applications (IWPMA) <10, 2013, Hannover>
Energy Harvesting Workshop (EHW) <8, 2013, Hannover>
Fraunhofer IIS ()

Vibrational energy harvesters are used for collecting electrical power from mechanical vibrations and supplying low power applications. Combining a piezoelectric generator with an electrodynamic generator creates a hybrid piezoelectrodynamic generator. In this paper a model for this hybrid generator is proposed. The model allows the accurate simulation of the mechanical and electrical part of the generator. It also makes it possible to analyze the waveforms and phase relationships of the two electrical outputs of the hybrid generator and thus simulate power management circuits and their feedback on the generator.