The development of two Broadband Vibration Energy Harvesters (BVEH) with adaptive conversion electronics

Dan J. Clingman; Jack Thiesen

doi:10.1117/12.2263208

4 April 2017 The development of two Broadband Vibration Energy Harvesters (BVEH) with adaptive conversion electronics

Dan J. Clingman, Jack Thiesen

Proceedings Volume 10166, Industrial and Commercial Applications of Smart Structures Technologies 2017; 1016609 (2017) https://doi.org/10.1117/12.2263208
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

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.

Citation Download Citation

Dan J. Clingman and Jack Thiesen "The development of two Broadband Vibration Energy Harvesters (BVEH) with adaptive conversion electronics", Proc. SPIE 10166, Industrial and Commercial Applications of Smart Structures Technologies 2017, 1016609 (4 April 2017); https://doi.org/10.1117/12.2263208

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