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Proceedings Paper

The development of two Broadband Vibration Energy Harvesters (BVEH) with adaptive conversion electronics
Author(s): Dan J. Clingman; Jack Thiesen
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Paper Abstract

Historically, piezoelectric vibration energy harvesters have been limited to operation at a single, structurally resonant frequency. A piezoceramic energy harvester, such as a bimorph beam, operating at structural resonance exchanges energy between dynamic and strain regimes. This energy exchange increases the coupling between piezoceramic deformation and electrical charge generation. Two BVEH mechanisms are presented that exploit strain energy management to reduce inertial forces needed to deform the piezoceramic, thus increasing the coupling between structural and electrical energy conversion over a broadband vibration spectrum. Broadband vibration excitation produces a non-sinusoidal electrical wave form from the BVEH device. An adaptive energy conversion circuit was developed that exploits a buck converter to capture the complex waveform energy in a form easily used by standard electrical components.

Paper Details

Date Published: 4 April 2017
PDF: 19 pages
Proc. SPIE 10166, Industrial and Commercial Applications of Smart Structures Technologies 2017, 1016609 (4 April 2017); doi: 10.1117/12.2263208
Show Author Affiliations
Dan J. Clingman, Boeing Research and Technology (United States)
Jack Thiesen, Grand River Radio Co. (United States)

Published in SPIE Proceedings Vol. 10166:
Industrial and Commercial Applications of Smart Structures Technologies 2017
Dan J. Clingman, Editor(s)

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